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Written by Kelly Herbst, Astronomy Curator for the Virginia Living Museum. Updated every two weeks, more or less.
Showing posts with label astronomy. Show all posts
Showing posts with label astronomy. Show all posts

Wednesday, April 9, 2014

Halfway Between the Gutter and the Stars...

Guess what?  We're playing a game.  This image has something in common with the title...but what?

Greetings!

We're in the middle of Spring Break here at the Virginia Living Museum, and that means lots of shows.  It's also a time when lots of people visit the museum, so we're really keeping busy around here these days.

During times like Spring Break and Summer, I get to talk to a lot of people about the sky.  So few of us take the time to stop and look up in the evenings...and even fewer of us can do so multiple times in a month.  Many folks don't realize that the sky is always changing above them!  The Earth's rotation carries stars and other celestial objects across the sky daily.  While the stars are fixed compared to each other over the course of a human lifetime, planets move constantly through the solar system, changing their positions against the background stars.  Compared to the stars, planets are moving at the speed of light!  The galaxy rotates as well, carrying the Sun and the the entire solar system along with it in a grand motion that we humans never see.

Another strange image that's somehow connected to something in the previous paragraph.

Even for those folks familiar with their local sky can be startled by the experience of seeing the sky from a new location.  Moving across the surface of the Earth also changes what you can see at night...especially if you change hemispheres!  When you see the Southern Cross for the first time, it can be an amazing experience.  Those stars, and many others, are never visible in the Northern Hemisphere, and can be seen only when venturing far to the south.  An added bonus of visiting in South America or Australia?  A view of the two companion galaxies to our own Milky Way - the Large and Small Magellanic Clouds!

Did you figure it out yet?  If you know who these guys are, and read the paragraph above carefully, you might make the connection!

Watching the sky can be romantic too.  I remember sharing a lovely evening under the stars in Chincoteague with my husband, not too long after we were married.  It was beautifully dark on the Eastern Shore of Virginia, and we were staying at a lovely bed and breakfast for the weekend.  We went out for a stroll on a delightfully warm and clear evening, and I remember smiling at my husband as the pale yellow Moon shone in his eyes.  We often get requests for proposals to take place under the stars in the planetarium, and we've even hosted a few weddings over the years!

Same thing here - if you know who they are, you might put them together with some words above.

The sky is filled with extraordinary objects.  A few times I've been asked what my favorite ones are...and that's a very tough question, because so many of them are incredible both scientifically and in terms of sheer beauty.  I guess if I had to come up with a short list, I'd say Jupiter and Saturn, Oberon, Miranda and Titania.

This one is a total red herring - I just like the picture.

Wondering what on Earth this post has been about?  I've just taken you on a clandestine astronomical and musical journey.  I adore music - rarely do I not have a tune in my head or playing somewhere about me.  As I type, Duran Duran's Rio is playing in the laser show running in the planetarium.  And my life is currently awash in the music from Disney's Frozen - I have a 10 year old daughter, you see.  But this post has quoted some of my favorite astronomical lyrics from five different songs.  Did you spot any of them?  The unusual pictures might give you a clue.  Give another look-see over the text to see if you can find them, or scroll down to see them identified.  Enjoy!

Back again in a couple of weeks!  Until then...
Carpe noctem!
Kelly

PS: Don't forget the star party at the museum this Saturday - Mars Madness!  Mars will be making a close approach to Earth, and should look awesome in our telescopes.  NASA will be on hand with fun activities and exhibits, and we'll have the usual slate of great shows in the planetarium.  NASA exhibits are FREE and begin at 6pm in the Education Center.  Observing is also FREE and begins at sunset (around 7:30pm).  Check our website for the slate of shows in the planetarium - $6 or any 2 for $10.  Members are always half price!

Solutions:

Halfway between the gutter and the stars... (title)  from Weapon of Choice by Fatboy Slim
Image 1: Christopher Walken in the video for Weapon of Choice
Planets are moving at the speed of light... (paragraph 2) from Speed of Sound by Coldplay
Image 2: Coldplay performing Speed of Sound from the video.
When you see the Southern Cross for the first time... (paragraph 3) from Southern Cross by Crosby, Stills and Nash
Image 3: Crosby, Stills and Nash in concert.
The pale yellow Moon shone in his eyes... (paragraph 4) from Under African Skies by Paul Simon
Image 4: Paul Simon and Ladysmith Black Mambazo on stage.
Jupiter and Saturn, Oberon, Miranda and Titania... (paragraph 5) from Astronomy Domine by Pink Floyd
Image 5: Hubble Space Telescope image.

Sunday, August 18, 2013

COSMIC STRINGS ALERT: Nova Delphini 2013

Woohoo!  We got us a nova!

A nova is a small, usually white dwarf star which brightens significantly because a companion star dumps material onto it.  When this new material becomes hot and dense enough - WHAM!  Nuclear fusion suddenly begins again, making the once-dead little star come to life and produce a whole heck of a lot of energy all at once.  A white dwarf can go nova repeatedly - as often as the supply of fuel is replenished to sufficient levels by its companion.

Nova Delphini 2013.  Image courtesy Wikipedia.

That appears to have a happened to a star in the constellation Delphinus the Dolphin.  The once-invisible star has brightened dramatically over the last few days - and it is now at just about the limit of vision for the average skies in our area.  If the sky around where you are is relatively dark and uncluttered at night, you should be able to pick out a faint "new" star in Delphinus.

"New" is in fact the Latin translation of nova.  Early astronomers thought that what they were seeing was a new star bursting into life.  Today we know this is not the case, but the name persists.  And in one sense, it is a "new" star, since normally this little white dwarf cannot be seen with the human eye at all.

This uptick in brightness may only last for a few days, and fortunately for us, the nova is well-placed in our evening skies for viewing.  Don't miss your chance to see this beautiful object!  Once the sky is nice and dark, head outside to check out the area near the Summer Triangle for the nova.  The chart below will help you locate it.  Bring out a pair of binoculars or a telescope to help you, as even at this new brightness, the nova may be just on the edge of your vision.

A guide to finding Nova Delphini 2013.  Image from Universe Today, created in Stellarium.

Best of luck!  If you see it, leave me a message in the comments!
Carpe noctem!
Kelly

Wednesday, June 5, 2013

Woohoo! It's Time to Star Party!

Greetings, astronomy fans!

Ah, the summer star party.  Sounds like a contradiction, doesn't it?

Actually, we're really excited about our summer star parties.  We'll have time in the early part of the evening to view the Sun, which is pretty awesome right about now.  We're in solar maximum, so there's almost always something cool to see.  And by cool, we mean about 8,000 degrees Fahrenheit.  That's the rough temperature of the average sunspot, a cool, dark region on the solar surface.  I know, it doesn't exactly sound cool...but with the rest of the solar surface hovering around 10,000 degrees, suddenly 8,000 doesn't sound so bad.

The Sun today, June 5, 2013.  Image courtesy NASA and Spaceweather.com

Once the Sun sets, we'll be treated to some wonderful sights in the evening sky.  Saturn is prominent right now, and looking awesome.  At a recent overnight event at the museum, we saw 4 moons (out of Saturn's many dozens), Cassini's division (a large gap in the ring system), and even some faint banding in the clouds of the giant planet (yellow and white clouds generally don't make for great contrast, so when you can see them, it's quite lovely).  Saturn is truly a sight to behold in a telescope, and well worth the wait for the darkness of night.  Beyond Saturn, expect to see some beautiful double stars, like Alberio, in the head of Cygnus the Swan...and perhaps a nebula or two, like the the Ring Nebula in Lyra the Harp.

Still from a video of Saturn shot June 2, 2013.  Image by Dash One using Raspberry Pi.

While you're waiting for the darkening sky to reveal it's secrets, we've got a special treat for you.  The United States Air Force Heritage Combo, the Blue Aces, will be rockin' it out in the Conservation Garden from 6-8pm (if the weather is inclement, they'll move into the lobby of the main museum building).  Trust me, you're going to enjoy that!  And did I mention that everything we've talked about so far is free? No really, FREE!

The Blue Aces.

Beyond the freebies, you can support the Virginia Living Museum and see some amazing stuff this Saturday night.  Only during the three evening star parties of summer can you visit our stunning summer exhibit, Bodies Revealed, without paying admission to the museum as well.  Stand alone tickets to Bodies Revealed will be available for $15 for adults and $12 for kids.  Members, of course, are only $7.  The exhibit is an incredible journey through the human body - you won't want to miss it.

Also available is an expanded slate of shows in the Abbitt Planetarium!  At 5:30pm, you can see Microcosm, our show about the parallel developments of space exploration and medical technology that will also propel you into a possible future where human beings can go inside the human body to cures diseases.  At 6:30pm, take a break and rock on with Laser Pop, featuring pop music across the decades.  At 7:30pm, catch a preview of the evening sky with Virginia Skies, a live sky talk with one of our staff astronomers.  At 8:30pm, the rock and roll goes on with Laser Vinyl, a mix of classic rock hits you won't want to miss. Rounding out the night is a Pink Floyd double feature - The Wall at 10pm and The Vision Bell at 11:30pm.  The Wall features selections from that classic album, while The Vision Bell is a fabulous mix of old and new Pink Floyd favorites inspired by the release of The Division Bell.  It's a double header you won't want to miss.  Shows in the planetarium are $6 each, or catch a double feature (any two shows on the same night) for $10.  Members are always half price!

Besides all this fun, the Wild Things Museum Store and the Wild Side Cafe will be open for your shopping and eating pleasure!  Plus enjoy the beautiful gardens as the Sun goes down and the evening cools off.  All in all, our summer star parties should be a blast!  Our first one is this Saturday, June 8, and will be your only chance to see the Blue Aces.  Come out and join us!

Until next time,
Carpe noctem!
Kelly

Wednesday, March 13, 2013

It's a bird...it's a plane...it's a COMET!

Greetings astronomy fans!

Well, it's here!  The first of the two comets touted to put on great shows in our skies this year.  Comet PanSTARRS has arrived!

Yep.  It's here

Okay, sorry if I sound a little bummed.  But I'd give my right arm to be in the southern hemisphere.  They've had extraordinary views of Comet PanSTARRS for quite some while now...and Comet Lemmon too!  And Comet McNaught last year!  It's been a veritable comet bonanza for our friends down under...and dang it, I am jealous!

But all is not lost here in the great white North.  I tried to see Comet PanSTARRS last night, but lingering clouds and light pollution made it impossible (I did see a fantastically young crescent Moon, however - youngest I've ever seen!).  But it should get easier tonight, as the comet is inching itself away from the Sun day after day.  That's going to both help (further from the Sun means it will be in a darker sky and easier to see) and hurt (further from the Sun means the comet itself will be a dimmer object) - but over the next couple of days we'll have our best chance to see this little interloper.  So how do we do that?  Here are some tips!

  • Find a location with as little light pollution as possible.  Get away from as many city lights as you can.
  • This same location also needs to have as flat a western horizon as possible.  The more sky you can see to the west, the better.
  • Start looking to the west just after sunset.  Focus your attention to the left of the brightest sunset glow.
  • Look for a very slender crescent Moon.  It will be up and to the left of the sunset.
  • Once you see the Moon, look between the Moon and the sunset glow for the comet!
A finder chart for Comet PanSTARRS.  Courtesy space.com.

Trust me, it will not be easy to see.  Binoculars may come in handy, but use them carefully and ONLY after the Sun has completely dipped below the horizon.  Seeing a comet is not worth losing an eye for.

A camera will help a lot, if you are confident enough to try it and have one of those "old-fashioned" cameras you can force to leave the shutter open for more than a tenth of a second.  Witness the power of the two-second exposure:

Comet PanSTARRS from Louisiana on March 12.  Image by Mike B. Courtesy Cloudy Skies Telescope Reviews.

So, sadly, Comet PanSTARRS is fainter than we hoped it would be by now.  Comets are tricky beasts - chunks of ice and rock left over from the early days of the solar system's formation.  When they dive close to the Sun like this one has, the ices warm and turn directly to gas, creating an often intricate and beautiful tail of materials stretching for millions of miles.  But the brightness of a comet is determined by the amount of ice as compared to rock (ice is shiny and bright and rock is dull and dim), so there's never really a good way to know if a comet is going to be bright or not...until it arrives.  Also, this appears to be Comet PanSTARRS first (and possibly only) trip close to the Sun, so the intense heating may have driven all the ices off, leaving not much left for us to see now that the comet has rounded the Sun.

I wish you all the best of luck in your efforts to see Comet PanSTARRS...and never fear, there's still Comet ISON to come later this year.  It's being touted as the "Comet of the Century" - but of course, we'll just have to wait and see.

Until next time,
Carpe noctem!
Kelly

Wednesday, February 27, 2013

What's Up?

Well, hello.

It's been an eventful time in the astronomy business, thanks to a chunk of rock that decided to scare the living daylights out of a whole lot of people living in Siberia.  Amazingly, they seem to like air-bursting asteroids...once again, just like in 1908, a chunk of space rock exploded rather than impacting.  Since this one did so over a city, many people were injured when they rushed to look out their windows to see what the bright flash of light was.  Once the shock wave hit, the windows shattered, glass went flying, and many people were hurt.  But fortunately, I do not believe there were any deaths associated with the event.  But my goodness, it must have been quite scary to experience that first hand.  We talked about the 1908 event in our previous chat...when I wrote that I had no idea it would be happening again so soon!

The fireball over Siberia on February 15, 2013.


Anyway, let's turn ourselves to a calmer exploration of the sky.  It's been a while since I wrote a nice, simple post about things appearing in the skies above, so I think it's time to do that again.

The early evening skies are currently dominated by the largest planet in the solar system - Jupiter.  Shining brighter than all the visible stars, Jupiter is easily seen high in the southwest after sunset.  It's currently located in the constellation Taurus the Bull, right behind the bull's V-shaped face.  Taurus, of course, is facing off with Orion the Hunter, brightest constellation of our sky and easily visible high in the south.  So just by looking southward after sunset you should be able to quickly find the seven bright stars of Orion.  Use the belt of Orion (three stars in an almost perfect straight line) to find Taurus by following the line it makes away from Orion towards the right.  The belt will point you to the brightest star of Taurus, reddish Aldebaran.  This is the upper left point of the V of Taurus' face.  Right next to the V will be Jupiter, almost shocking in its brightness.

Following Orion's Belt to Aldebaran, the red right eye of Taurus the Bull.  In February of 2013, Jupiter is located between the V of Taurus' face and the Pleiades.

Jupiter is an incredible world.  Ten times bigger than our own planet Earth, Jupiter is a gas giant and the largest of the solar system's planets.  Even so, it is still much too small to be a star...Jupiter would have to be 10 times again as big as it is to become a star like the Sun.  The gravity of mighty Jupiter holds over 60 moons in orbit around the massive world, and even supports a tiny, thin ring system, completely invisible from Earth.  Only visiting spacecraft have the opportunity to see the rings of Jupiter, and they have fortunately sent lovely pictures back to us here on Earth.  Known from ancient times, Jupiter has long fascinated us, and it has been the target of numerous missions including the Voyager space probes and the Galileo spacecraft.  Another mission, Juno, is on its way, with a planned arrival in July of 2016.

The giant planet Jupiter.

The only other planet currently visible to us is Saturn, which graces the early morning sky before the dawn.  You'll see Saturn as a golden-yellow star-like object shining in the south before the Sun rises.  A pair of binoculars is all that is needed to reveal the lovely Saturnian rings, but you will need to hold them very steady.  A tripod will serve you well.  And be prepared to get up quite early - 5AM is the best time to see Saturn these days.  If you'd rather see it at a more convenient time...wait a few months.  Later in the year, Saturn will become an early evening object rather than an early morning one.

Saturn and its amazing ring system.

So everyone take a deep breath, relax, and enjoy the sky.  I promise, despite the events of recent days, the world is not coming to an end.  Hopefully the sky will give us a few days to catch our breath before the next potential big event - Comet PANSTARRS.  If the comet becomes something worth venturing outside to see, I'll put out a Cosmic Strings Alert to let you know.

Barring that, I'll see you in two weeks!
Carpe noctem!
Kelly

Wednesday, December 5, 2012

Something's Coming...

Come on in, don't be shy, meet a guy, pull up a chair!

Okay, you know it's been a tough day when I break into show tunes.

Seriously, good things are happening around here at the Virginia Living Museum.  It's getting kind of exciting.

First of all, we're getting pretty close to being done with flood recovery!  We hope to have the lower level of the museum reopened very soon.  So watch the museum's webpage for an official announcement on that score, hopefully before the end of the year.  It's been a long, slow recovery process, and we're very excited to get the museum fully opened again.  I hear tell there will even be some new exhibits coming downstairs, which is also pretty exciting!

Naturally, this is an exciting time of year in general, with the holidays in full swing.  I have an 8-year-old daughter at home and that makes Christmas extra-special, I can tell you.  Our annual trip to Christmas Town is coming up this weekend (can't wait!), plus all the decorating and visiting and baking and whatnot the season brings.  The Virginia Living Museum is all decorated up for the season, too.  In the planetarium lobby the tree has a lovely silver and blue theme this year which I think suits us well.  And of course, holiday programming continues in the theater until the end of the year, so don't miss out on that!

Jupiter and its largest moon, Ganymede.  Courtesy STScI.

Most exciting in my book is that this Saturday is our monthly star party and Laser Light Night!  It's a special one, too.  Jupiter is just past its opposition, so the giant planet is close to the Earth and looking fabulous even in a small telescope.  Rising close to sunset and remaining visible all night, we're hoping for the clouds to part and show us a fabulous view!  Ten times larger than the Earth, Jupiter shows an amazing amount of detail with only a small amount of magnification.  Probably the most wonderful thing about viewing Jupiter is that you usually get to see a few of its moons as well - most notably the four Galilean satellites.  These four largest moons of Jupiter were first spotted by Galileo Galilei (hence the name Galilean satellites) in the early 1600s.  He called them "the Medicean stars" since at the time of his discovery of them, his bills were being paid by the prominent Medici family (Galileo was no fool!).  Later, all of the moons of Jupiter we renamed for various lovers of Zeus/Jupiter.  Today, the four largest moons of Jupiter are known as Ganymede, Callisto, Europa and Io.  It's a fair bet we'll get a glimpse of all four of them this weekend, so be sure to join us.  Remember, observing is always FREE!

An artist's conception of an eruption on Jupiter's volcanic moon, Io.  A new panoramic wallpaper will be installed in the lobby of the Abbitt Planetarium this January based on this poster.  Courtesy NASA Langley.
 
 In addition, we'll be celebrating the hard work of the many good people who helped raise funds for the museum's flood relief campaign during Walktober!  This dedicated group of walkers raised over $8000 and counting!  And you can help by purchasing a Walktober Flood Relief T-shirt for only $5 this Saturday during the Star Party.  To thank our walkers, we've got extra shows on the docket, and everyone is welcome.  Check out the schedule online.  Shows in the theater, whether planetarium or lasers, are $6 each, or 2 for $10.  Members always receive half off.

Many other things are coming down the pike for the remainder of the year, so I'd better get back to work!

See you in two weeks! And until then...
Carpe noctem!
Kelly

Wednesday, November 21, 2012

Pass the Astronomy, Please

Happy Day Before Thanksgiving!

I'm in a food mood, folks.  I'm looking forward to Thanksgiving this year.  Maybe because I don't have to do all the cooking myself this time!  Or maybe because the Mythbusters took on some classic food myths - including that turkey tale of tryptophan.  But whatever it is...let's take a moment to explore some ways to bring a little astronomical fun to the holiday.

Of course, the first thing that comes to mind is just get outside!  After the massive meal and the inevitable 4 hours on the couch to recover, get up and head outdoors.  It will be dark by then, and maybe you'll be treated to some lovely sights!  As early as 6pm, the Moon will be climbing high towards the south, being just a bit past first quarter at that point.  This will be a great time to get out the binoculars or a telescope and sweep along the terminator - the line of shadow that separates day and night on the Moon (or any other celestial body) - and explore the wonders of the lunar surface.  The deep shadows to be found at the terminator make for an excellent view of mountains, craters, and other magnificent features.

The Moon's terminator.  Note the strong detail visible thanks to the deep shadows.  Courtesy stargazing.net


By 9:30pm, Jupiter will be a blazing beacon of white light in the eastern sky.  It will be tantalizingly close to the red right eye of Taurus the Bull, Aldebaran.  The color contrast should be quite lovely.  And here again, a telescope or binoculars will provide some extra excitement, showing you several Jovian moons and maybe a couple of cloud bands on the massive planet.

Jupiter and its 4 largest moons as seen through a small telescope.  Courtesy Universe Today.


But perhaps you're just not going to be able to get up off that couch.  Maybe we'd better add some astronomical fun to the meal itself, or there's no chance you'll get anything spacey in at all.

One easy way to stellar up any meal is with a little starfruit!  When you slice this unique little fruit correctly, the pieces come out star-shaped.  Scatter them around as garnish on almost any dish - they have a mild, white-grape like flavor which is very pleasant and goes with almost anything.

Star fruit, shown whole and sliced.  Image courtesy www.yummy-ness.tumblr.com

For those who really want to do up the astronomical flair - may I suggest a little pizazz during the pie course?  Big round things always put me in mind of the planets.  Perhaps an apple pie might be topped with a red-food-coloring tinted top crust and become the surface of Mars!  Or the whipped cream on top of the pumpkin or coconut cream pie might be striped to look suspiciously like the clouds of Venus or Saturn.

Gracious, I've just given a whole new meaning to "The Face on Mars," haven't I?


However you celebrate, be it astronomically or not, have a wonderful and peaceful Thanksgiving.
Carpe noctem!
Kelly

Wednesday, November 7, 2012

The Most Wonderful Time of the Year

Hooray!  The election is over!

Okay, sorry, I couldn't help myself.  Whether your favored candidate won or lost, I think we can all agree it's been a long and rough election season.  I confess I am happy to be done with political ads, phone calls, and mail.  The holidays are just around the corner, and that is indeed my favorite time of year.

But before we get into the holiday season, we've got something fun coming up this Saturday!  Yes, it is once again time for our monthly Star Party and Laser Light Night here at the Virginia Living Museum.  While the flood damage has stopped us from using our lower level, the observatory is in great shape, and the planetarium is running just fine.  So we hope you'll be able to join us for some great sky watching and planetarium and laser shows this weekend!  Here's a quick preview of what we'll be looking at in the night sky (weather permitting, of course!).

Actually, I can pretty much sum it up in one word - Jupiter.  The largest planet of the solar system has once again returned to the evening skies and we cannot be more excited!  Mars (technically) remains low in the southwestern sky after sunset, but let's face it...it's nothing to write home about.  Even on the flattest western horizon you'll have difficulty finding our little neighbor planet.  It's not very bright, it's a dull orangey color, and at only half the size of Earth it's not particularly big, even in a telescope.  On the other hand, Jupiter is the second brightest of the planets (behind only Venus, now dominating the early morning skies), at ten times bigger than Earth it shines like a brilliant white star and shows amazing amounts of detail in a telescope, and rises in the early evening to then spend the rest of the night crossing the sky.  You can bet we'll have a telescope or two trained on Jupiter throughout the star party.  Join us to see how many Jovian moons we can spot, whether the Great Red Spot is facing towards us, and how many dark cloud bands can be seen on the face of the mighty planet

Jupiter, largest planet of the solar system.  Courtesy NASA

We often spend time hopping around various deep sky objects as well...galaxies, globular clusters, open star clusters and nebulae are frequent sights in our eyepieces.  There's also a chance you might see something impressive without even needing a telescope.  The North Taurid meteor shower will peak in the wee hours of Monday November 12...but it's not unthinkable that we might see a few early shooting stars on Saturday November 10.  The Taurids occasionally produce some brilliant fireballs, so if we do see a meteor, it's likely to be a doozy. 

A Taurid Fireball from 2005 photographed in Japan.  Courtesy NASA.  Photograph by Hiroyuki Iida

In the planetarium we'll be featuring the night sky and lots of great music.  At 7:30pm, I'll take you on tour of the evening sky with Virginia Skies.  Once you've seen the stars in the planetarium, step outside and check out the real thing!  Bring the kids for our 8:30pm laser show: iPop.  It's a great mix of some of today's hottest pop stars...including some of those super-popular teens from the Disney Channel and Nickelodeon.  Hoping for some music more to an adult's taste?  No problem - stick around until 10pm for the psychedelic sounds of Laser Doors...and keep the trip rolling on with Pink Floyd's Dark Side of the Moon at 11:30pm.  It all kicks off at sunset with FREE observing of the night sky...shows are $6 person, or any two for $10.  Members always get their tickets half price.

Okay, in the interests of full disclosure...there's another reason why I'm so excited for the star party this month...it's happening on my birthday, which I share with two wonderful people...a dear friend of mine (Happy Birthday, John David!) and Martin Luther, architect of the Reformation.  I suppose I could nail my doctoral thesis to my church door...nah, it wouldn't make much sense...plus the doors are made of glass anyway...

Until next time...
Carpe noctem!
Kelly

Wednesday, October 10, 2012

So What's on Your Mind?

I came to the shocking realization the other day that I've been writing this blog for over a year now.  It certainly hasn't seemed that long to me.

One of the things I was hoping would happen as I began this blog hasn't really materialized yet.  I'd really love to be fielding your questions...talking about the topics that interest you, my readers, the most.  Anyone is welcome to leave a comment on any post - even if your question has nothing to do with the post!  I'll be more than happy to answer your question...and I might even make it the topic for the next blog post.  So please - ask away!

In the hopes of inspiring some new questions, let me share with you the answers to the questions I get asked most frequently.

Who invented the telescope? -OR- Galileo invented the telescope, right?

Actually, Galileo Galilei did many amazing things that advanced our understanding of the solar system we live in, but inventing the telescope was not one of them.  He was the first person to use a telescope for astronomical purposes, turning his simple instrument on the Moon, the Sun, Jupiter, Venus and even Saturn.  But credit for inventing the telescope is generally given to Hans Lippershey, a Dutch lensmaker. 

Hans Lippershey.  Courtesy Wikipedia.

What was that bright thing I saw last night/morning in the east/south/west?

About 99% of the time, the answer to this question is one of the 5 naked-eye visible planets: Mercury, Venus, Mars, Jupiter or Saturn.  Most often, it's Jupiter or Venus, as they are the brightest of these five, with Venus being the brightest object in the sky after the Sun and the Moon.  The planets are generally brighter than the stars near them, and they won't twinkle the way the stars do, making them stand out against the background stars.  These days, Mars is extremely low in the southwest in the early evening.  In the early morning skies, you'll find Jupiter high in the south and Venus mid-way up in the east around sunrise. 

On rare occasions, the answer to this question is Sirius, the brightest star in the nighttime sky.  You'll find Sirius in the winter sky, easily located by following Orion's famous belt to the left.  Sirius will twinkle quite a bit, and it is impressively bright.

Sirius by the Hubble Space Telescope.  The small white dot in the lower left of the image is a tiny white dwarf companion to the main star.  Courtesy NASA.

Where can I buy a quality telescope?

Some camera shops still carry high quality telescopes, but my personal favorite place to purchase observing equipment is online from Orion Telescopes.  They carry an excellent "house" brand, plus the usual players like Meade and Celestron.  Their customer service is excellent, and their prices are quite reasonable.  One word of caution - be wary of purchasing anything manufactured by Meade.  This once-excellent company was bought out several years ago and now offers little or no customer service, and has become increasing difficult to deal with.  Stick with Celestron or Orion's own stuff. 

Where to NOT buy a telescope (especially with the holiday season just around the corner) is any big box store of any kind.  Most "Christmastime" telescopes are cheap, fall apart quickly, and use inferior optical elements.  A good rule of thumb - if the telescope costs less than $150, you are probably going to be disappointed.

When is the best time to see shooting stars in the sky?

Shooting stars are actually meteors - chunks of rock from space coming in to the Earth's atmosphere at high speed.  When they make contact with the Earth's air, the friction generated by the rocks passage causes the air it passes through to glow - making the streak of light we call a shooting star.  While random bits of rock can plunge Earthward at any time, Earth does regularly pass through rocky debris left behind by the regular orbiting of comets.  Such times are called meteor showers, and they are the best times to go out and look for shooting stars. 

The best meteor showers of the year and the rough dates they peak on are:

The Quadrantids  January 4
The Perseids       August 12
The Orionids       October 21
The Leonids        November 17
The Geminids      December 14

I say rough dates because the exact peak date and time changes every year.  In general, the best time to be outside to look for meteors is around 2AM as the combination of the forward motion of the Earth in its orbit and the rotation of the Earth carrying us in the same direction make it more likely that meteors will be visible.  Astronomy is not a hobby for those who like to go to bed early. 

My birthday was yesterday.  Why couldn't I find my sign in the night sky?

Your "sign" is the constellation in which the Sun was located on your birthday.  During the course of the year, the Sun appears in the sky against the background of the zodiac stars, which are part of 12 (13 if you count Ophiuchus, which the ancients really didn't) different constellations.  Today's astrological signs are generally determined by the way the sky looked 6000 years ago, when astrology was getting its start.  In 6000 years, the sky has shifted a fair bit, mostly because very few motions of the solar system actually occur in even numbers of hours or days or months or years.  So what the newspaper says is your "sign" is actually probably not where the Sun really was on the day you were born. 

For example, I was born on November 10.  According to classic astrology, my sun sign is Scorpius the Scorpion.  However, on the actually date I was born...the Sun was located in the constellation Libra the Scales.  6000 years makes a measurable difference in such things.

However, none of that has to do with why you can't find your sun sign constellation in the sky on your birthday.  You can't find it at night, because it isn't there!  By definition your sun sign is in the daytime sky on the day you were born - because it's near where the Sun is on that day.  So if you want to see your sun sign in the sky...wait for 6 months after your birthday.

So what astronomical question have you been longing to ask?  I await your comments eagerly.

Until then,
Carpe noctem!
Kelly

Thursday, September 13, 2012

Keep Looking Up

Greetings all!

I know, I know, I'm a day late again.  Once again, the internets refused to let me in to my blog if I'm not at work.  I'm not sure what's broken, but I think I'm going to stop trying to fix it.

Things are still a little shaken up here at the museum as we work on recovering from the flood, but overall, we're trying to get everything settled down into something resembling a routine.  So I thought I'd go back to a routine here as well and just talk about what's visible in the sky right now.  Sometimes doing the "normal" things helps the most when things are decidedly not normal.

We're getting ready to make the transition into fall, with longer nights and cooler temperatures, thank goodness.  It's a pleasure to be outside in the evenings now...you might even find you need a light jacket if you plan to stay outside for any length of time.  What a wonderful thing!

It will still be a couple of months before the brilliant stars of winter begin to grace the evening skies, but until then you can enjoy the last hurrah of summer - The Summer Triangle.  Three bright stars form a brilliant triangle that sits high overhead just after sunset and descends towards the west as the evening passes on.  To the East, you'll find the familiar Great Square of Pegasus - four stars in an almost perfect square dominate the eastern sky and mark the location of the legendary winged horse.  Two simple bright shapes that are pretty tough to miss.

The Summer Triangle and its surrounds.  Courtesy the University of Illinois.  Note that the Milky Way passes directly through the center of the triangle.

Looking westward at sunset might allow you a final quick glimpse of the planets Mars and Saturn, both sinking rapidly towards the Sun.  By the end of the month, both planets will be lost to our view.  Mars will still be in the news regularly however, as Curiosity really gets rolling on its mission to explore the Red Planet.  Sadly, with Mars and Saturn so low, and both relatively dim, you might miss them if you have anything other than a totally clear flat western horizon...hard to come by on the east coast of the United States.

However, don't get too downcast just yet.  If you can stand an early morning wake up call, you can see a pair of beautifully brilliant planets in the early morning sky.  Head outside around 5am and look to the east to see Venus and Jupiter dominate the pre-dawn sky.  Jupiter stands high in the east (almost to the south) with Venus lower but still plenty high enough to be seen quite easily.  These two are the brightest of the planets visible to the unaided eye, and make a stunning pair.  Well worth the effort of rising before the Sun to enjoy them.

Venus, The Moon and Jupiter in the early morning sky.  Photograph by Alan Dyer.  The Moon is the brightest object in the field, with Venus slightly up and to the left.  Jupiter stands up towards the top of the image to the right of the Moon and Venus.

Ah.  Just talking about the beautiful skies of fall helps me feel a bit better.  There's plenty of work still to be done, but taking the time to enjoy the simple things in life really does renew your spirit.

See you in two weeks...and until then...
Carpe noctem!
Kelly

Wednesday, July 18, 2012

Nice Work If You Can Get It

Hey everyone!

So today I thought I'd share the story of how I got where I am today.  For some reason, I've been asked the question a lot lately, so the twisted tale of my journey to running a planetarium and observatory has been much on my mind lately.  Besides, it's so bloody hot outside, no one wants to do any observing anyway (but you still have a good shot at seeing Saturn and maybe even Mars in the early evening sky if you want to give it a try...look to the southwest just after sunset!  Saturn is the golden yellow bright "star"...Mars is a faint, dull orangey-looking "star" just to the right a bit).

The night sky of July 18, 2012.  Facing South.

So, me.  Everyone loves talking about themselves, don't they?

I've always been interested in the sky and astronomy, ever since I was a little kid.  I grew up in New York City (New York City!!??!!???) so my skies were most definitely not the best.  Still, when I was old enough to travel into Manhattan by myself, I would spend long days at the American Museum of Natural History and the Hayden Planetarium (now the Rose Center for Earth and Space) enjoying the darkest skies around.

I also loved music, and as I headed into Wagner College on Staten Island, I thought I'd major in that.  But the summer before I began college, I realized that to be a professional singer I needed more talent and an agent, not a degree.  I was also good at math, so I thought I might major in that.  Had no idea what I could do with a math degree except teach, which didn't excite me.  So I went undeclared and sampled lots of cool courses during my first year...including a physics class.  I was hooked.  I majored in physics, doing my senior thesis on energy audits of buildings.

I knew very quickly that I wanted to take a higher degree in physics, and was accepted to the Ph.D. program at the College of William and Mary.  I eventually did my thesis in theoretical nuclear physics, but during my studies I got to do some papers on astrophysics as well.  More importantly, I found I really needed a break from the work, so I started volunteering in the observatory at the Virginia Living Museum, giving me 4 hours a week where I wasn't obsessing about my thesis.

Seven years later I was still plodding along on the thesis, but I was also panicking.  Years of working in the ivory tower had taught me that research was not at all my favorite thing.  Suddenly, I had no idea what I was going to do with the rest of my life.  Luckily, an opportunity came up at the Virginia Living Museum.  Their part-time planetarium lecturer was leaving.  I'd love to say they begged me to work for them, but the truth is I begged them to wait for me.  I needed to finish the thesis...but then I couldn't imagine anything more fun than working in the planetarium and observatory every day.  They were willing, and I got the job.

Fifteen years later I've worked my way around to being in charge of all the astronomy stuff here at the museum.  My job is a wonderful mix of teaching, live performance, film & theater production, and occasionally blowing things up.  It's the best thing I could ever imagine doing.  Okay, maybe the second best thing.  See the image below for the best thing ever.

My husband Philip, me, and our little girl, Margaret.  Totally the best thing ever.

So sometimes it really does pay off to follow your heart and do what you love.  It's worth a heck of a lot to be able to get up everyday and be happy to go to work.  So, I guess the point of today's post is try to find a way to do what you love to do.  When I was trying to figure out what that was for me, I got great help from a book called What Color is Your Parachute?  - I highly recommended it to anyone out there who's trying to figure out what they'd like to do with the rest of their life.

Next time, we'll probably be talking about a certain Mars rover...but until then...
Carpe noctem!
Kelly

Thursday, June 21, 2012

There's 104 days of summer vacation...

...and it all officially began yesterday!

Wait...what?

Yesterday was the official first day of summer, with the season truly beginning at precisely 7:09pm.  More significantly, perhaps, yesterday, June 20, was the longest day of the year in the northern hemisphere.

By rights, I should have posted yesterday, but the day conspired against me.  You see, I'm teaching summer camps again, and yesterday was the Virginia Living Museum's annual meeting, so I was tied up all day and...

Oh, what?  You're confused...you thought it was today, didn't you? 

Let me explain.

Most years, the equinoxes and solstices fall on the 21st of the months they occur in.  So usually, summer begins on June 21.  But this year is a leap year...meaning there was an extra day to count in February.  That extra day in February is something we humans add to the calendar...the Earth doesn't care what day it is on the calendar.  It just keeps on moving and doing its thing.  So this year, because of the extra day in February, the solstice arrived on June 20.

Sunrise at Stonehenge on the Summer Solstice.  This image was take in 2005.  Courtesy Wikipedia.

So happy summer.  Go outside, if you can stand the heat, and have yourself a double dip ice cream cone to celebrate.  Heck, with these temperatures, make it a triple.

I'm super crazy busy with summer camps, so I'm going to keep this one short.  See you in (about) two weeks!

Carpe noctem (what little there is of it!)
Kelly

Wednesday, May 30, 2012

COSMIC STRINGS ALERT: Transit of Venus!

Red alert!  Red alert!  All hands to battle stations!

Hee hee, I've always wanted to say that.

Okay, seriously...I'm posting a special update to make sure all of you out there in internet land are aware of the incredible astronomical event taking place next Tuesday.  On the late afternoon/early evening of June 5, we have our last opportunity to witness Venus cross directly in front of the Sun.  Such events are called transits of a planet, and this will be the last one Venus will consent to do in our lifetimes...unless any of us plan on living 105 more years (Adam Savage excepted, of course).

So what is it we are going to see on June 5th?

The 2004 Transit of Venus.  Photo by Jay M. Pasachoff.

Venus orbits the Sun closer in than we do.  It's the second planet from the Sun...we're the third.  So on June 5th everything is going to line up just right to allow us from here on Earth to see Venus silhouetted against the solar surface.  Normally, this doesn't happen.  The solar system is not perfectly aligned - everybody is just slightly off kilter - and so usually Venus passes above or below the visible surface of the Sun from our perspective.  Mercury can do this too - it's the closest planet to the Sun, and moves faster than Venus, so the alignment works more often.  But Mercury is much smaller than Venus (and in fact, smaller than several of the larger moons of the solar system), making it much more difficult to see against the solar surface.  Venus is bigger and closer to us, so the perfectly round black dot of Venus will visible to the unaided (BUT NOT UNPROTECTED!!!) eye.

Notice the yelling up there?  Please, please, do not attempt to Venus the transit of Venus without proper eye protection.  This can result in PERMANENT eye damage.  Sunglasses are not enough, nor is it safe to look at the solar surface during sunset when the Sun is red.  The only safe ways to view the transit are by projecting an image of the Sun, protecting your eyes with solar eclipse glasses or shade #14 arc welder's glass, or using an endcap solar filter on your telescope.  Any other method can be terribly dangerous, so please don't attempt it.  If you're not sure if you have the right equipment to safely view the Sun, contact us at the museum.  We can help.

Okay, so what's the big deal?  A dot on the solar surface.  So what?

So what!!!???!  It's AWESOME!  You're watching a planet cross in front of its star!  WOOT!  That would be the geek explanation of why this is so cool.

Historically, transits of Venus gave us a yardstick by which to measure the sizes and distances of our own solar system.  If you can measure the size of the disk of Venus against the size of the disk of the Sun, and measure how long it takes for Venus to cross the disk of the Sun, you can use that information to calculate a whole bunch of things...most importantly, the distance between the Earth and the Sun.  Since getting out your tape measure and walking to the Sun is...well...highly problematic...transits of Venus gave us the best way of measuring distances in the solar system prior to spaceflight capabilities.

In the 21st century, we've become very interested in planet transits...around other stars.  The Kepler telescope looks for the tell-tale drop in brightness from stars that have planets crossing in front of them, as the planet prevents some of the light from the star from reaching the telescope.  The transit method has allowed us to discover numerous other solar systems in our galaxy...and perhaps one day will aid in us finding another Earth-like planet somewhere out there.

NASA's Kepler Mission.  Courtesy NASA.

If you're looking for some help in viewing the transit, we've got you covered.  We're hosting a special "Dinner with Venus" event, as the transit will begin around 6pm and continue well past sunset (of course, we won't be able to see the Sun after that, so our viewing will be over).  Tickets are $30 per person and include an all-you-can-eat dinner buffet at the Wild Side Cafe, eclipse glasses, telescope viewing of the transit (or internet viewing if the weather goes bad), prize drawings and more.  Space is limited, so contact us today to reserve your spot.  And if you can't get here - get outside on June 5 and watch the sunset with PROTECTED eyes - you'll get a bit more than you bargained for!

Carpe diem et noctem!
Kelly

Wednesday, April 11, 2012

The Planets Will Go On

Hey everyone!

So I am already excited for this Saturday's Star Party and Laser Light Night here at the Virginia Living Museum.  It's going to be awesome, for two reasons.  Number one is that we'll be enjoying a Titanic theme!  This Saturday, April 14, 2012, is the 100th anniversary of the sinking of the Titanic.  We'll be adding a Titanic flair to the night with a special showing of "Night of the Titanic" at 6:30pm.  Then at 7:30pm, we'll have our regularly scheduled "Virginia Skies" but we'll examine the stars of the Northern Atlantic as well and compare them to what we see here in Virginia.  Finally, at 8:30pm, "Laser Magic" features the theme from James Cameron's "Titanic" - Celine Dion's "My Heart Will Go On."  The punned out version of that title which heads up my post tells you the other reason I'm super excited about this Saturday.

Have you looked up in the early evening sky recently?  There are four - count 'em, FOUR! - planets visible to the unaided eye gracing the sky just after sunset.  It's incredible!  If the weather holds and things cooperate, you've got the chance to see all four of these planets through telescopes at the museum this weekend.  And it's free to boot!  How can you beat that?

Looking to the west in the early evening, you can still see Venus and Jupiter decorating the sky after sunset.  Venus is now substantially higher in the sky than Jupiter - the two have been moving apart steadily since their close encounter in March.  Jupiter is lower and fainter than Venus, so look carefully at the western horizon.  Venus will pop right out at you (it is the brightest object in the sky after the Sun and Moon, after all), but look down below Venus for the brilliant jewel of the solar system's largest planet, Jupiter.

Venus above and Jupiter below. Credit: Kevin Jung.

Turning your attention to the East will show you two more planets!  Mars is high in the south-southeast just after sunset, and is a distinctive orange color.  If you turn and compare colors between Mars and Venus, the decidedly orange tinge of Mars becomes very clear.  Mars' unique color comes from rust - the soil on Mars is rich in iron, and over time that iron has combined with oxygen to form rust.  The legendary windstorms of Mars have carried that rusty dust all over the planet, resulting the The Red Planet's characteristic hue.

Look low to the eastern horizon to see the fourth and final planet - golden-yellow Saturn.  If you can join us this Saturday, it will be well worth hanging around until Saturn climbs above our treetops so you can see it through a telescope.  It is quite possibly one of the most amazing things you will ever see!  Even at a distance of roughly a billion miles, the rings are quite distinctive, and with our larger scopes, you might even glimpse a few details in the cloud layers.

Saturn through a moderate-sized telescope.

We'll start setting up our telescopes around sunset (about 7:30-8pm these days) and will continue to observe until about 11:30pm or so.  Observing is free!  Planetarium programs begin at 6:30pm and are $6 for one, $10 for two (members are always half price!).  Make an evening of it and grab dinner in the Wild Side Cafe beginning at 6pm - they'll remain open until 10pm for food, snacks and drinks (both kid-friendly and adult).  It's going to be a "Titanic" night - so come join us!

See you then...
Carpe noctem!
Kelly

Tuesday, November 22, 2011

Giving Thanks

Happy Thanksgiving everyone!  Since I'll be off tomorrow, preparing to enjoy the holiday with my family, I figured I'd post a day early, and keep it all on the Thanksgiving theme.

As you've likely come to expect from this blog, there also needs to be a generous dollop of humor, so in honor of Thanksgiving and with apologies to David Letterman...

From the home office in Milliways, the Restaurant at the End of the Universe, here's my Top Five List of spacey things I'm thankful for this Thanksgiving.

5. The Abbitt Planetarium
Yep, I'm thankful for my job!  And not just for the usual it-pays-the-bills reasons either.  I'm one of those lucky people who truly has their dream job.  I get to work with people of all ages and share with them my love of the universe.  I get to exercise my creative drives and make shows in the planetarium on numerous different topics.  It's like being a Hollywood director without the pressures of Hollywood.  What more could I ask for?  And thank you to all of you who come to visit us and make it possible for me to continue to do what I love.

4. The Hubble Space Telescope
Hubble is truly one of the most remarkable spacecraft ever launched.  It's the telescope with 9 lives (at least!) and has provided us with innumerable stunning images of the cosmos.  It has survived not only the rigors of being launched into space aboard the space shuttle, but also numerous servicing missions designed to repair and upgrade its instruments.  When the initial flaw in the primary mirror was discovered shortly after launch, many people figured the Hubble was a loss.  Thanks to some amazing work by both engineers and astronauts, Hubble's flaw was repaired and for over 20 years this school-bus-sized scope has continually made our jaws drop with its incredible images.

Dying star V838 Mon.  Courtesy STScI/NASA.

Jupiter and its moon, Ganymede.  Courtesy STScI/NASA

Supernova 1987A.  Courtesy STScI/NASA.


Hubble is in decline now, since NASA has retired the space shuttle - the only vehicle which could be used to service the telescope.  Over the coming years, Hubble's systems will slowly degrade, until a final critical failure of some kind renders it useless.  Its successor, the James Webb Space Telescope, is mired in funding problems as NASA struggles to maintain itself in these fiscally trying times.  Whether JWST makes it up or not, when Hubble images its last, I for one, will shed quite a few tears.  No other instrument, before or since, has done what Hubble can - inspire us all with wonder at the visions of the universe it provides.

3. The Apollo Missions to the Moon
We've been to the Moon.  Men from Earth have stood on the surface of the Moon and looked up at the fragile blue planet we call home.  It was real, we went there.  It was not, as so many people believe, an elaborate hoax.  And it is one of the most inspiring stories of human exploration ever.

Astronaut Buzz Aldrin on the lunar surface.  Courtesy NASA.

Exploration is always challenging.  But in reaching for the Moon, we had to overcome seemingly insurmountable obstacles.  There is no water or air on the Moon.  Gravity is dramatically less, so machines behave in different and unexpected ways.  We had no idea what the surface of the Moon was like, or how men would react - physically and psychologically - to being in space or on the lunar surface.  And yet, in the space of a decade, we went from dreaming about it to being there.  I hope one day, NASA will be able to have that kind of drive and vision again.  If you don't know the story of our journey to the Moon - check it out.  It's worth it.

2. The Night Sky
There's something entirely captivating about a dark night sky.  Looking up at the stars is a wonderful, peaceful thing to do in a world that sometimes overwhelms us with activity.  And sharing it with someone you love, or even someone you're never met, makes the experience all the more special.  My daughter and I have looked at the sky since she was a tiny baby.  If you've never enjoyed a dark night sky - here's a goal for the new year.  Attend a star party.  Look through a telescope for the first time.  Just go outside one night and look up for a while.  And when you do, remember that all of humanity shares that sky with you.  No matter how far away, no matter how long ago they lived, everyone everywhere has seen the same stars that you can see just by looking up. (I miss you, Dad.)

The arc of the Milky Way in California photographed by Tony Hallas.  Courtesy Astronomy Picture of the Day.


We're in danger of losing our night skies forever as we turn on more and more nighttime lights.  Losing the sky means losing a powerful part of our heritage.  Don't wait too long to see it - or it might not be there for you to enjoy.

And the Number One spacey thing I'm thankful for this Thanksgiving...

1. The Mars Curiosity Rover
We're headed back to Mars!  Mars is a simply fascinating planet, and our exploration of it has only made it seem more intriguing.  While we've found no canals or war-like Martians, we have found tantalizing evidence of massive amounts of water having once covered the Martian surface...and even indications that there once may have been...and even yet may still be...life on our rusty red neighbor.  The Curiosity rover is due to launch on November 25th, with a eye to landing on the Red Planet this fall.  I can't wait to see what amazing new discoveries it will show us.  Stay tuned!

The Curiosity Rover.  Courtesy NASA/JPL.


I wish you all a safe, happy, and joyful Thanksgiving!
Carpe Noctem!
Kelly