Catch up on stories from the past week (and beyond) at the Slashdot story archive


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×

Submission + - My Favorite Moon: Iapetus (

Daniel Markham writes: "Saturn's moons are some of the strangest moons in the solar system. Out of all of this weirdness, Iapetus strikes me as one of the strangest. It's got an odd mix of colors, is oddly shaped, and has the big freaking wall or ridgeline running down the middle of it. Makes it look like a moon with a screw top.

Since some of the original Cassini pictures were released a couple of years ago, there's been a lot of speculation about Iapetus because of the wierdness of the images coming back. Some are calling it The Great Wall of Iapetus

Now comes news that the mystery of the Great Wall might have been solved. Scientists at JPL are saying that Iapetus might be one of the oldest moons in the solar system, and because of radioactive decay, the moon could have shrunk, forming the ridgeline.

The jury is still out, however. One thing is for certain: the more public speculation and involvement in the story, the more interest there is in NASA and the Cassini mission. Cassini is tasked with another close fly-by of walnut-shaped, Pac-Man-looking Iapetus in September. Let's hope for something that keeps the public interested."

This discussion was created for logged-in users only, but now has been archived. No new comments can be posted.

My Favorite Moon: Iapetus

Comments Filter:

The IBM purchase of ROLM gives new meaning to the term "twisted pair". -- Howard Anderson, "Yankee Group"