sep 212012
 
Dawn Sees Hydrated Minerals on Asteroid Vesta (with Video)

  Volatiles, or easily evaporated materials, have colored Vesta’s surface in a broad swath around its equator. This has been reported in two new papers based on observations from the low-altitude mapping orbit of the Dawn mission.  Asteroid Vesta. Image Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA Pothole-like features mark some of the asteroid’s surface where the volatiles, likely water, released [continue reading]

jun 152012
 
Surprise: Tropical Lakes on Titan!

  NASA’s Cassini spacecraft has spied long-standing methane lakes, or puddles, in the “tropics” of Saturn’s moon Titan. One of the tropical lakes appears to be about half the size of Utah’s Great Salt Lake, with a depth of at least 3 feet (1 meter). Saturn’s rings lie in the distance as the Cassini spacecraft [continue reading]