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]

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]

mei 312012
 
Methane On Mars Does Not Indicate Life

Intense UV radiation on the red planet releases methane from organic materials which meteorites transport onto its surface. Methane concentration on Mars: The graphics shows the calculated methane concentrations in parts per billion (ppb) on Mars during the summer in the northern hemisphere. Violet and blue indicate small methane, red areas indicate large amounts. Credit: [continue reading]

apr 132012
 
Mars Viking Robots ‘Found Life’

In 1976, the National Aeronautical Space Agency (NASA) launched the Viking program, sending space probes to Mars to determine whether there was life on the red planet. Thirty-six years later the debate about life on Mars is not over, but research conducted in part at the University of Southern California (USC) offers more proof that [continue reading]