aug 292013
 
Titan has a Thick, Rigid and Weathered Ice Shell

  An analysis of gravity and topography data from Saturn’s largest moon, Titan, has revealed unexpected features of the moon’s outer ice shell. The best explanation for the findings, the authors said, is that Titan’s ice shell is rigid and that relatively small topographic features on the surface are associated with large roots extending into [continue reading]

mei 312013
 
Saturn's Moon Dione Might Have a Subsurface Ocean

  From a distance, most of Saturn’s moon Dione resembles a bland cueball. Thanks to close-up images of a 500-mile-long (800-kilometer-long) mountain on the moon from NASA’s Cassini spacecraft, scientists have found more evidence for the idea that Dione was likely active in the past. It could still be active now. The Cassini spacecraft looks [continue reading]

apr 152013
 
Best Spots on Europa to Search for Extraterrestrial Life

  The surface of Jupiter’s moon Europa exposes material churned up from inside the moon and also material resulting from matter and energy coming from above. If you want to learn about the deep saltwater ocean beneath this unusual world’s icy shell — as many people do who are interested in possible extraterrestrial life — [continue reading]

mrt 192013
 
Anne's Picture of the Day: Jupiter’s moon Europa

March 19, 2013 Jupiter’s icy moon Europa Image Credit: NASA/JPL/DLR Jupiter’s moon Europa is, with just over 3,100 kilometers (1,900 mi) in diameter, slightly smaller than Earth’s Moon. It is the sixth-largest moon of Jupiter, and the smallest of its four Galilean satellites but nonetheless more massive than all known moons in the Solar System [continue reading]

sep 262012
 
Does Jupiter's Moon Europa Have a Subsurface Ocean?

  Europa, the enigmatic moon of Jupiter, is believed to be home to a subsurface ocean of liquid water. However, future missions to explore Europa’s ocean may need to dig deep. Research suggests that water does not stay in a liquid state near Europa’s surface for longer than a few tens of thousands of years [continue reading]

jun 302012
 
Confirmed: Titan has a Subsurface Ocean!

  Nothing like it has been seen before beyond our own planet: large tides have been found on Saturn’s moon Titan that point to a liquid ocean – most likely water – swirling around below the surface. A possible scenario for the internal structure of Titan, which includes a global subsurface ocean beneath an icy [continue reading]