A Plethora of Planets

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NASA's Mars rover Curiosity took photos from the Vera Rubin Ridge showing the interior and rim of Gale Crater. The full image features 16 photos stitched together.
(NASA/JPL-Caltech/MSSS)

NASA's Mars rover Curiosity took photos from the Vera Rubin Ridge showing the interior and rim of Gale Crater. The full image features 16 photos stitched together. (NASA/JPL-Caltech/MSSS)

Mars’ close approach is Tuesday, July 31. A large subglacial lake of (very salty) liquid water has been found on Mars. This conclusion was arrived at by a group of European researchers using a radar analysis method frequently applied on Earth to determine subglacial features, including the presence of subglacial lakes.

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