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July 25, 2018 07:00 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/jceJXh9Dhms/moon-could-have-been-habitable-once-scientists-speculate
Moon Could Have Been Habitable Once, Scientists Speculate
Scientists from Birkbeck, University of London speculate that recent results show that the moon is wetter than scientists have previously thought, increasing the possibility for it to have the necessary conditions for life. "Whether life ever arose on the Moon, or was transported to it from elsewhere, is of course highly speculative and can only be addressed by an aggressive future program of lunar exploration," they write in the article, published in the journal Astrobiology. Gizmodo summarizes: This habitability period, if it really occurred, might have happened either just after the Moon's formation from a massive collision with Earth 4.5 billion years ago, or 3.5 billion years ago, after a period of volcanism which may have resulted in a thin lunar atmosphere. Such an atmosphere would have lasted perhaps tens of millions of years. Maybe water existed on the Moon at this point. Maybe 10 million years was enough time for some rudimentary life to evolve on the Moon. Maybe Earthly life traveled over to the Moon on asteroids. Who knows. The researchers stress that "habitability requires much more than just the presence of a significant atmosphere and liquid water." One such requirement would be the presence of organic compounds. And there are obviously not the same water-created features on the Moon that we see here on Earth or on Mars, like drainage channels -- though maybe these existed and were eroded by small meteors and solar winds. While the paper doesn't present new data, it's an interesting synthesis of lots of existing research demonstrating that, since the Moon is wetter than was initially thought, maybe it's worth wondering whether it was once habitable.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/jceJXh9Dhms/moon-could-have-been-habitable-once-scientists-speculate
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