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Nitrogen may be a sign of habitability

We might commonly think of Earth as having an oxygen-dominated atmosphere, but in reality the molecule makes up only a fifth of our air. Most of what surrounds us is nitrogen, at 78 percent. Astrobiologists are beginning ...

dateJan 13, 2016 in Astronomy
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Image: Dark pools on Titan

This radar image from the Cassini orbiter shows a thin strip of surface on Saturn's moon Titan. The yellow-hued terrain appears to be peppered with blue-tinted lakes and seas. However, these would not be much fun to splash ...

dateJan 11, 2016 in Space Exploration
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Image: Boulders on a Martian landslide

The striking feature in this image, acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter on March 19, 2014, is a boulder-covered landslide along a canyon wall. Landslides ...

dateDec 29, 2015 in Space Exploration
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