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

Over the Moon

Actually, I'm kind of not.

We had an amazing night last Saturday, observing the Moon.  The NASA exhibit was awesome...I touched a piece of the Moon!  Our Moon is incredible!

And that got me thinking...what about all the other moons?  Does anybody realize how incredibly awesome they are?

We tend to focus on our own Moon.  Makes sense...it's big, bright, and plays an important role in the existence of life here on Earth.  But among the major planets there are 168 other moons...all equally fascinating worlds in their own right!  So let's explore some of the other moons out there...and kind of play a little compare and contrast with our Moon, if you will.

Earth has one moon.  That's it...just The Moon.  Most of the other planets have many more moons indeed...Jupiter takes the prize for the most (if you don't count ring particles!) at 64 known satellites.  Even Mars has 2 moons - double what we've got!  The only planets with fewer moons than Earth are Mercury and Venus - neither world has any moons at all. 

Size matters though...Mars' two moons are extraordinarily tiny.  Phobos (Fear) and Deimos (Panic), as the Martian moons are named, are most likely captured asteroids.  They are small potato-shaped bodies, barely findable in a telescope from here on Earth...and even then only when Mars makes a close approach to us.  Such jagged chunks of stuff can be found orbiting all of the gas giant planets as well...the majority of the solar system's moons are weird little lumpy leftovers from the formation of the planets.

Phobos (top) and Deimos (bottom).  Courtesy NASA.

On the other hand, our Moon is not the largest in the solar system, either.  That distinction goes to Ganymede, largest moon of Jupiter.  In fact, Ganymede is larger than the smallest major planet...at 3,280 miles across it beats Mercury's size by more than 200 miles.  This massive moon is truly a world in its own right...it shows evidence of tectonic activity, its own magnetic field, and it might even have an atmosphere.  Talk about your colossal moon!

Ganymede from the Galileo spacecraft.  Courtesy NASA.

Speaking of atmosphere, our Moon hasn't got one.  If you plan on visiting the Moon, make sure you bring your own air.  The moon with the densest atmosphere?  Saturn's enigmatic Titan.  The moon, explored by the Huygens lander, has the distinction of being the only moon known with an atmosphere consisting of more than trace gases.  It is a dense soup of hydrocarbons, with numerous distinct layers...shrouding the moon and looking like a heavy layer of orange smog.  So impressive is this moon's atmosphere that it is believed to be, like Venus, a super-rotator - that is, the atmosphere actually rotates much faster than the moon itself does.  The Huygens probe showed us incredible details about Titan, but so much more remains to be learned.

Titan from the Cassini spacecraft.  Courtesy NASA.

The surface of Titan from the Huygens probe.  Courtesy NASA/ESA.

Keep in mind, we've limited ourselves at this point to explore the moons of the major planets.  There are more moons than that in the solar system!  Of the 5 confirmed dwarf planets, 3 have moons: Eris has Dysnomia, Haumea has Namaka and Hi'iaka, and Pluto has Charon, Hydra, Nix, and the newly discovered P4 (it's so new it doesn't have a name yet!).  Pluto is only 2/3rds the size of our Moon - and it has 4 moons of its own!  Incredible!

Pluto and its 4 moons from the Hubble Space Telescope.  Courtesy NASA.

Oh, so you think only planets, be they major or dwarf, can have moons?  Not so...the asteroid Ida has a moon, Dactyl, first discovered by the Galileo spacecraft as it passed by on its way to Jupiter.  The solar system is rich with moons!  Take some time to explore them...both by reading up on them and by checking them out through telescopes - the moons of Jupiter and Saturn can easily be seen in telescopes from Earth!

Ida and its tiny moon Dactyl from the Galileo spacecraft.  Courtesy NASA.

Have fun mooning around, and I'll see you next time!
Carpe noctem,
Kelly