Originally posted by fatlittlepig
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Even our other neighbor Venus was once a very temperate place until 800 million years ago when there were major volcanic eruptions spewing tons of sulfuric acid and CO2 that turned it into the hottest planet. 800 million years was not that long ago when you realize that huge dinosaurs were here on earth 250 million years ago.
Knowing what exactly happened that triggered these planets to dead zone planets from hospitable planets can help us prevent that from happening here on Earth. For that, spending $3B is small change.
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