Saturday, 13. August 2016

Venus May Once Have Been a Garden Planet

A new model suggests a world very different from the one we know today

One of the hard facts of our solar system is that even with eight perfectly nice planets, Earth remains the only house on the block with its lights on—at least in terms of life. Mars, it’s increasingly clear, was once a warm, watery planet and had a shot at cooking up biology, but only until numerous environmental cataclysms turned it dry and cold. Now, according to environmental models run by NASA’s Goddard Institute for Space Studies (GISS) and reported in Geophysical Research Letters, Venus coulda’ been a contender too. For up to two billion years, the investigators believe, our cosmic neighbor may have been an entirely hospitable place for life.

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