Mars News, Science, Technology at MarsDaily.com

July 15, 2014

'Dry Ice' Cause of Gullies on Mars
Reston VA (SPX) Jul 15, 2014
Seasonal carbon dioxide frost, not liquid water, is the main driver in forming gullies on Mars today, according to a recent U.S. Geological Survey study that relied on NASA's Mars Reconnaissance Orbiter's (MRO) repeated high-resolution observations. Martian gullies are landforms typically consisting of steep channels, usually having a recessed head, that feed into a fan of material deposited at the bottom. The discovery of active gullies was first reported in 2000, which generated excitement due t ... read more

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Further Evidence of Dry Ice Gullies on Mars Repeated high-resolution observations made by NASA's Mars Reconnaissance Orbiter (MRO) indicate the gullies on Mars' surface are primarily formed by the seasonal freezing of carbon dioxide, not liqu ... more		NASA Mars Orbiter Views Rover Crossing Into New Zone NASA Mars rover Curiosity has driven out of the ellipse, approximately 4 miles wide and 12 miles long (7 kilometers by 20 kilometers), that was mapped as safe terrain for its 2012 landing inside Gal ... more		NASA Spacecraft Observes Further Evidence of Dry Ice Gullies on Mars Repeated high-resolution observations made by NASA's Mars Reconnaissance Orbiter (MRO) indicate the gullies on Mars' surface are primarily formed by the seasonal freezing of carbon dioxide, not liqu ... more
				Forces of Martian Nature The surface of Mars is pocked and scarred with giant impact craters and rocky ridges, as shown in this new image from ESA's Mars Express that borders the giant Hellas basin in the planet's southern ... more		Rover Uses Arm to Study Several Rocks and Takes Panoramic Images Opportunity is exploring south along the west rim of Endeavour Crater. The rover is currently surveying a region where orbital data suggests the presence of aluminum-hydroxyl clay minerals. On ... more

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First LDSD Test Flight a Success NASA representatives participated in a media teleconference to discuss the June 28, 2014 near-space test flight of the agency's Low-Density Supersonic Decelerator (LDSD), which occurred off the coas ... more		Rover Has Enough Energy for Some Late-Night Work Opportunity is exploring the west rim of Endeavour Crater. The rover is continuing south along the ridgeline that forms the spine of the crater rim, collecting color imagery of targets and outcrops ... more		OPERA satellite data sharpens US crop and water management Neural network sharpens satellite ocean color in complex coastal waters Deep Arctic gas hydrate mounds host ultra deep cold seep ecosystem		New Type of Dust in Martian Atmosphere Discovered A group of French and Russian scientists, including three MIPT specialists, has discovered a new peculiarity of the Martian atmosphere. The scientists had analyzed satellite-acquired data and conclu ... more
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	NASA's 'flying saucer' tests new Mars-landing technology NASA sent a saucer-like vehicle high into the sky Saturday to test technology for a future Mars landing, but its parachute tangled when deployed and the spacecraft splashed into the Pacific Ocean. ... more		Elon Musk plans to take people to Mars within 10 years Entrepreneur and inventor Elon Musk has some travel suggestions that are out of this world. The SpaceX CEO known as the brains behind the Tesla electric car says he wants to take humans to Mars duri ... more

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