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MAHLI view on sol 1641 of two of the raised treads (grousers) on the left middle wheel of the Curiosity rover which recently broke, including the one seen partially detached at the top of the wheel. Photo Credit: NASA/JPL-Caltech/MSSS As the Curiosity rover continues its traverse among the buttes and sand dunes of […] 
View from Curiosity of the Yellowknife Bay rock formation. Drilled samples here and elsewhere provided evidence that this region used to be at the bottom of a lake, but also that there are little or no carbonate mineral deposits, which should have been produced if the carbon dioxide atmosphere was thicker and warmer […] 
Mars’ atmosphere is thin, dry, and cold now, but it used to be thicker and contained a lot more oxygen. Image Credit: ESO/M. Kornmesser Mars’ atmosphere is thin and cold, composed primarily of carbon dioxide along with other trace gases and some water vapor. Evidence has continued to mount, however, that the rarified […] 
Cassini’s final close flyby of Enceladus will be on Dec. 19, 2015. Image Credit: NASA/JPL-Caltech The Cassini spacecraft’s discoveries about the tiny moon Enceladus have been some of the most exciting of the entire mission at Saturn. What was once thought to likely be little more than a frozen ice world has turned […] 
View of Enceladus and Saturn’s rings during the flyby on Oct. 28, 2015, at a distance of 106,000 miles (171,000 kilometers) from Enceladus. Image Credit: NASA/JPL-Caltech/Space Science Institute The Cassini spacecraft has successfully completed its deepest dive through the water vapor geysers of Enceladus and is now sending back some fantastic images of […] 
Artist’s conception of Cassini making a close flyby of Enceladus and its water vapor plumes. Image Credit: NASA/JPL This coming Wednesday, Oct. 28, 2015, the Cassini spacecraft will make a historic close flyby (dubbed “E21”) of Saturn’s tiny icy moon Enceladus, not only passing very close to the surface, but also making the […] 
New high-resolution view of the north polar region on Enceladus, showing a cratered surface crisscrossed by many cracks. Image Credit: NASA/JPL-Caltech/Space Science Institute The Cassini spacecraft has just successfully completed the first of three final close flybys of Saturn’s moon Enceladus, and has sent back some spectacular images of the northern regions of […] 
Illustration of Cassini’s “E-20” flyby of Enceladus, which will provide new, detailed views of the moon’s north polar region. Image Credit: NASA/JPL-Caltech Starting today, the Cassini spacecraft is making the first of three scheduled close flybys of the moon Enceladus, which will provide the first good look at the north polar region of […] 
Diagram depicting the interior of Enceladus, with the global ocean between the ice crust above and the rocky core below. The jets of water vapor erupt from fissures at the south pole. Image Credit: NASA/JPL-Caltech Along with Jupiter’s moon Europa, Saturn’s moon Enceladus is considered to be one of the best places to […] 
Mars used to have a thicker atmosphere and water on its surface, but what happened to that atmosphere has been a mystery. New research may finally help answer that question. Image Credit: M. Kornmesser/ESO The question of how Mars changed from a once wet world to the much colder and drier one we […] |
 Next Launch NG-11 on a Antares 230 rocket from Wallops Island, VA scheduled for: 17 Apr 19 at 20:46 GMT 17 Apr 19 at 4:46pm Eastern 
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