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This Could Be Where Mars’ Water Disappeared to

Mars looks like it used to have water—perhaps even entire oceans. But not today. Today, scientists can’t even decide whether it’s got slight trickles darkening the dirt on its mountainsides. If Mars did once have oceans, then where did they go? Read More >>

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The First Look at an Ocean on Mars

We knew there was water in abundance in Mars, but we never saw its ocean. This is it, as uncovered by strong new evidence found over the course of two years by the MARSIS radar on board ESA's Mars Express. Read More >>