geology – planetaria

Curiosity rover finds seasonal clues about Martian methane and investigates unusual ‘stick’ formations

January 8, 2018February 26, 2018 by Paul Scott Anderson

As we enter 2018, NASA’s Curiosity rover continues to be busy exploring on top of Vera Rubin Ridge, on the lower flanks of Mount Sharp. The rover is gradually making …

Hotsprings in Gale crater? Curiosity rover finds new evidence for ancient hydrothermal activity

August 28, 2017 by Paul Scott Anderson

NASA’s Curiosity rover has found even more evidence for a previously habitable environment in Gale crater on Mars, according to a new study just published. The findings point to a …

Curiosity continues journey after drill problems, finishes another year of scientific discovery

December 27, 2016 by Paul Scott Anderson

A “self-portrait” of Curiosity beside one of the dunes in the Bagnold Dunes. Image Credit: NASA/JPL-Caltech/MSSS

The Curiosity rover has now resumed its journey toward Mount Sharp after experiencing some delays due to a faulty drill mechanism. The rover conducted a short drive over the past weekend toward a new location with “plenty of science targets to choose from.” Being on the road again is of course a relief to mission engineers and scientists, although the problems with the drill are still being diagnosed. As has come to be expected, Curiosity again made some exciting science observations in 2016, which continue to show that this region on Mars was once a lot more habitable in the ancient past, and perhaps bringing us closer to answering the question of whether life ever actually did exist there.

More evidence from Curiosity rover for ancient habitability and widespread organics on Mars

December 16, 2016 by Paul Scott Anderson

View of the path ahead for the Curiosity rover, looking toward the foothills of Mount Sharp. The various sedimentary layers on the mountain are a geological record of different environmental conditions in the past. Photo Credit: NASA/JPL-Caltech/MSSS

NASA held another press briefing this week about the latest findings from the Curiosity rover on Mars, detailing new evidence that this former lake environment was once quite hospitable for possible life. The findings were announced from the fall meeting of the American Geophysical Union in San Francisco. In a related development, there is also new evidence from Curiosity that organics have not only been definitively found by the rover, but that they may be more widespread on Mars than previously thought.

Opportunity rover ready to explore Martian gully for first time ever

October 13, 2016 by Paul Scott Anderson

Panoramic view of Marathon Valley as seen by the Opportunity rover. The interior of Endeavour Crater lies in the distance. Soon, the rover will move southward to examine a gully thought to have been carved by water long ago. Photo Credit: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.

Water on Mars is one of the most talked about and controversial subjects in planetary science. It is now well-known that Mars used to be a much wetter place than it is now, although just how much water there was, and how long it lasted, is still a matter of considerable debate. Direct evidence from rovers, landers, and orbiters, including observations of ancient riverbeds, gullies, and lakes, has shown how at one time Mars was much more Earth-like than it is today. Rovers like Curiosity, Opportunity, and Spirit have actually driven over long-dried-up lakebeds, salty playa lakes, and regions of ancient geothermal activity such as hot steam vents. Now, the Opportunity rover is going to visit another feature not yet explored by any other rover or lander: a gully thought to have been carved by water millions or billions of years ago.