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NASA's STEREO-A resumes normal operations

On Nov. 9, 2015, NASA's Solar and Terrestrial Relations Observatory Ahead, or STEREO-A, once again began transmitting data at its full rate. For the previous year, STEREO-A was transmitting only a weak signal—or occasionally ...

dateNov 19, 2015 in Space Exploration
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Colors of a comet

OSIRIS, the scientific imaging system of ESA's Rosetta mission to comet 67P/Churyumov-Gerasimenko, shows a surface with subtle, but significant color variations.

dateNov 12, 2015 in Space Exploration
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Will we contaminate Europa?

Europa is probably the best place in the solar system to go searching for life. But before they're launched, any spacecraft we send will need to be squeaky clean so don't contaminate the place with our filthy Earth bacteria.

dateNov 10, 2015 in Space Exploration
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