Help Shape the Future of Space Exploration

Join The Planetary Society Now Join Now!

Join our eNewsletter for updates & action alerts

   Please leave this field empty
Blogs

See other posts from December 2010

Headshot of Emily Lakdawalla

Door 12 in the 2010 advent calendar

Posted by Emily Lakdawalla

2010/12/12 05:39 CST

Topics:

Time to open the twelfth door in the advent calendar. Until the New Year, I'll be opening a door onto a different landscape from somewhere in the solar system. Where in the solar system is this trapezoidal mountain?

Door 12

NASA / JPL / Jason Perry

Door 12
Jupiter's moon Io is well known for its active volcanoes; less well known are its mountain peaks poking up here and there. The tidal forces that flex Io's surface to create its active volcanism also conspire to push and pull the solid part of its crust, breaking it up, opening rift basins in some places, pushing mountains together elsewhere, and sometimes causing pieces of crust to tip and founder and then get flooded by lava so only broken bits of the former crust poke up above new lava plains.

There is only one place I ever look for images of Io, and that's Jason Perry's website. He explained the origin of Hi'iaka in one of his many "volcano of the week" posts; this particular image was taken during the "I25" flyby in November 1999. Hi'iaka Patera and Montes share their name with one of the moons of the football-shaped Haumea (American football, that is, or rugby ball if you prefer).The Planetary Society Blog 2010 Advent Calendar


 

Or read more blog entries about:

Comments:

Leave a Comment:

You must be logged in to submit a comment. Log in now.
Facebook Twitter Email RSS AddThis

Blog Search

JOIN THE
PLANETARY SOCIETY

Our Curiosity Knows No Bounds!

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Us

Featured Images

Phobos-Grunt imaged in orbit

Scanning electron microscope images of two pieces of Surveyor 3
A conceptual Mars outpost making rocket propellants from the local environment
Pete Conrad at the Surveyor 3 spacecraft, with the Apollo 12 Lunar Module in the background
More Images

Fly to an Asteroid!

Travel to Bennu on the OSIRIS-REx spacecraft!

Send your name

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook! Twitter! Google+ and more…
Continue the conversation with our online community!