The planet Venus may have had a perfectly habitable environment for 2 to 3 billion years after the planet formed, suggesting life would have had ample time to emerge there, according to a new study.
In 1978, NASA's Pioneer Venus spacecraft found evidence that the planet may have once had shallow oceans on its surface.
It's believed that Venus may have been a temperate planet hosting liquid water for 2 to 3 billion years before a massive resurfacing event about 700 million years ago triggered a runaway greenhouse effect, which caused the planet's atmosphere to become incredibly dense and hot.
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