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High-Silica “Halos” Indicate Mars Was Quite Wet in the Past

NASA JPL May 30, 2017 Pale “halos” around fractures in bedrock analyzed by NASA’s Curiosity Mars rover contain copious silica, indicating that ancient Mars had liquid water for a long time. “The concentration of silica is very high at the centerlines of these halos,” said Jens Frydenvang, a rover-team scientist at Los Alamos National Laboratory in New Mexico, and the ... Read More »

Mars Has Some Weird, Un-Earthlike Sand Dunes

NASA JPL June 30, 2016 Some of the wind-sculpted sand ripples on Mars are a type not seen on Earth, and their relationship to the thin Martian atmosphere today provides new clues about the atmosphere’s history. The determination that these mid-size ripples are a distinct type resulted from observations by NASA’s Curiosity Mars rover. Six months ago, Curiosity made the ... Read More »

Methane and Organic Chemicals Found on Mars

NASA December 16, 2014 NASA’s Mars Curiosity rover has measured a tenfold spike in methane, an organic chemical, in the atmosphere around it and detected other organic molecules in a rock-powder sample collected by the robotic laboratory’s drill. “This temporary increase in methane — sharply up and then back down — tells us there must be some relatively localized source,” ... Read More »

Curiosity Enters Region of Martian Sandstone

NASA JPL March 24, 2014 Variations in the stuff that cements grains together in sandstone have shaped the landscape surrounding NASA’s Curiosity Mars rover and could be a study topic at the mission’s next science waypoint. On a journey with many months yet to go toward prime destinations on the lower slope of Mount Sharp, Curiosity is approaching a site ... Read More »

Curiosity Rover Crosses a Big Martian Sand Dune

February 11, 2014 The Curiosity Rover used its navigation camera to capture these images (see animation) of a traverse made on February 06, 2014, when the rover crossed a sand dune at the entrance to “Dingo Gap,” inside Gale Crater. On February 09, the rover traversed another 135 feet, making it all the way through the gap. image credits: NASA ... Read More »

Curiosity’s Route to Mount Sharp Takes Shape

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