Venus likely maintained stable temperatures and hosted liquid water for billions of years before an event triggered drastic changes in the planet, according to a new study. Venus likely maintained stable temperatures and hosted liquid water for billions of years before an event triggered drastic changes in the planet, according to a new study.
Those temperatures could have included a maximum of 122 degrees Fahrenheit and a minimum of 68 degrees Fahrenheit. Venus receives more sunlight than Earth, which would evaporate liquid water, sending hydrogen into space and trapping a buildup of carbon dioxide. That would lead to a nonstop greenhouse effect that would create its current toxic atmosphere. Venus' topography was completely altered by volcanic eruptions that most likely filled in lowland regions and potential ocean basins over the past billion years.
Previously, researchers believed that Venus is too close to the sun to sustain liquid water on its surface, beyond the inner limit of the sun's habitable zone. The new simulations shift that belief for Way and his colleagues. But something happened around 700 million years ago that remains a mystery, although the researchers think its connected to volcanic activity. Magma would have released carbon dioxide into the atmosphere, and as the magma cooled, the gas couldn't be reabsorbed in the surface.
The word play makes it look like it's actually science not conjecture.
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