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Another thing we thought was water on Mars actually isn't water
![]() ![]() ![]() Back in 2011, NASA scientists announced they had spotted compelling evidence that water sometimes still flowed on Mars. Now, researchers are backpedaling on these watery conclusions.* To NASA's credit, the 2011 evidence looked quite convincing. Images captured by the Mars Reconnaissance Orbiter — a NASA satellite orbiting Mars — showed telltale dark streaks running down various mountains, valleys, and craters on Mars. They look strikingly similar to features formed on Earth's surface by flowing water. But, according to a new study in the journal Nature Geoscience, it turns out these dark streaks are made mostly of "granular flow" — sand and perhaps rocks falling downhill — rather than water flowing down valleys during the warmer Martian summers.* Read more... More about Space, Nasa, Science, Mars, and Mars Orbiter ??????? ??????: Another thing we thought was water on Mars actually isn't water || ??????: rss || ??????: اسم منتداك
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