
© NASA/JPL-Caltech/MSSS/CNES/CNRS/LANL/IRAP/IAS/LPGN
A research team has discovered that the Martian climate alternated between dry and wetter periods, before drying up completely about 3 billion years ago. The Perseverance rover has just landed on Mars. Meanwhile, its precursor Curiosity continues to explore the base of Mount Sharp (officially Aeolis Mons), a mountain several kilometres high at the centre of the Gale crater...
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