Venus was potentially habitable until a mysterious event happened

Photos: Water in the solar system
Research suggests Venus may have had water oceans billions of years ago. A land-ocean pattern was used in a climate model to show how storm clouds could have shielded ancient Venus from strong sunlight and made the planet habitable.
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Photos: Water in the solar system
Jupiter's moon Europa, which has a subsurface ocean beneath an icy crust, has also been found to contain table salt. Tara Regio is the yellowish area to left of center where researchers identified an abundance of sodium chloride.
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