Image: Jet activity at the neck of the Rosetta comet

(Phys.org) —The four images that make up a new montage of comet 67P/Churyumov-Gerasimenko were taken on September 26, 2014 by the European Space Agency's Rosetta spacecraft. At the time, Rosetta was about 16 miles (26 kilometers) ...

With few data, Arctic carbon models lack consensus

(Phys.org) —As climate change grips the Arctic, how much carbon is leaving its thawing soil and adding to Earth's greenhouse effect? The question has long been debated by scientists. A new study conducted as part of NASA's ...

NASA air campaigns focus on Arctic climate impacts

Over the past few decades, average global temperatures have been on the rise, and this warming is happening two to three times faster in the Arctic. As the region's summer comes to a close, NASA is hard at work studying how ...

Dawn operating normally after safe mode triggered

(Phys.org) —The Dawn spacecraft has resumed normal ion thrusting after the thrusting unexpectedly stopped and the spacecraft entered safe mode on September 11. That anomaly occurred shortly before a planned communication ...

Small asteroid to safely pass close to Earth Sunday

(Phys.org) —A small asteroid, designated 2014 RC, will safely pass very close to Earth on Sunday, Sept. 7, 2014. At the time of closest approach, based on current calculations to be about 2:18 p.m. EDT (11:18 a.m. PDT / ...

NASA radar system surveys Napa Valley quake area

NASA scientists are conducting an airborne survey of earthquake fault displacements in the Napa Valley area of Northern California using a sophisticated radar system developed by NASA's Jet Propulsion Laboratory, Pasadena, ...

Memory reformat planned for Opportunity Mars rover

(Phys.org) —An increasing frequency of computer resets on NASA's Mars Exploration Rover Opportunity has prompted the rover team to make plans to reformat the rover's flash memory.

Voyager map details Neptune's strange moon Triton

(Phys.org) —NASA's Voyager 2 spacecraft gave humanity its first close-up look at Neptune and its moon Triton in the summer of 1989. Like an old film, Voyager's historic footage of Triton has been "restored" and used to ...

NASA Mars rover Curiosity nears mountain-base outcrop

(Phys.org) —As it approaches the second anniversary of its landing on Mars, NASA's Curiosity rover is also approaching its first close look at bedrock that is part of Mount Sharp, the layered mountain in the middle of Mars' ...

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