'NASA’s Hubble Space Telescope has observed water vapor above the frigid south polar region of Jupiter's moon Europa, providing the first strong evidence of water plumes erupting off the moon's surface.'
'A new analysis of data from NASA's Galileo mission has revealed clay-type minerals at the surface of Jupiter's icy moon Europa that appear to have been delivered by a spectacular collision with an asteroid or comet. This is the first time such minerals have been detected on Europa's surface. The types of space rocks that deliver such minerals typically also often carry organic materials.'
'The Curiosity mission has achieved another milestone as scientists have determined that the rocks inside Gale Crater that were analyzed by the rover are very old – even on geologic time scales, but were exposed very recently. The achievement of utilizing in-situ age-dating methods using radiogenic and cosmogenic noble gases marks a first in planetary exploration.'
Visit National Parks on other worlds.
Cold War Christmas Cards from the USSR.