Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Blogs

Headshot of Emily Lakdawalla

Door 26 in the 2010 advent calendar

Posted by Emily Lakdawalla

26-12-2010 14:00 CST

Topics: pretty pictures, Earth, impact cratering

Time to open the twenty-sixth 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 rayed crater?

Door 26

Google Earth

Door 26
This photo has a resolution of 61 centimeters per pixel and covers an area about 420 meters square.

This is Kamil crater in Egypt, which is notable for a couple of reasons: it was first noticed in Google Earth images (though "precovered" in satellite images dating back to 1972), and it has rays, which makes it very unusual among Earth craters. There are rayed craters elsewhere in the solar system, of course, but they're not at all common on Earth. Rays are the hallmark of a relatively fresh impact crater; older craters don't have them, as space weathering and other small-scale erosional processes wipe them away. On other worlds, "relatively fresh" can still mean "millions of years old." On Earth, though, with its active geology, rays don't last nearly that long; this crater is estimated to be fewer than 10,000 years old.

I wanted to write more about this crater when the press releases appeared about it but just never had time. So here's a link to the original Science article and the Wikipedia entry on it!

The Planetary Society Blog 2010 Advent Calendar

 
See other posts from December 2010

 

Or read more blog entries about: pretty pictures, Earth, impact cratering

Comments:

Leave a Comment:

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

Blog Search

LightSail

Support LightSail!

Our LightSail test mission was successfully completed and our Kickstarter campaign ended June 26th, raising $1.24 million dollars for LightSail's 2016 solar sailing mission! Miss the Kickstarter campaign, but still want to donate? You can!

I want to help!

Featured Images

Titan, Dione, rings, Prometheus
Ceres from Dawn's Survey Orbit
Topographic map of Ceres with crater names
Ceres from Dawn Survey's Orbit
More Images

Featured Video

Pluto and Pals featuring Emily Lakdawalla!

Watch Now

Selfies to Space!

Take flight with a selfie on LightSail™ in 2016!

Send a Selfie Now

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!