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Massive Earth-like planets that have both continents and oceans may be better at harboring extraterrestrial life than those that are water-only worlds. A new study gives hope for the possibility that many super-Earth planets orbiting distant stars have exposed continents rather than just water-covered surfaces. Continue reading "SuperEarths with Exposed Continents Boost Chances for Extraterrestrial Life" » In 1980 and 1981 NASA's Voyager 1 and 2 space probes passed for the first time over the planet Saturn, located 1,500 million km from the Sun. Among their numerous discoveries they observed a strange, hexagon-shaped structure in the planet's uppermost clouds surrounding its north pole. The hexagon remained virtually static, without moving, vis-à-vis the planet's overall rotation that was not accurately known. Continue reading "Saturn's Enigmatic Hexagon --"Yields Clues to the Hydrogen-Gas Giant's Hidden Atmosphere"" » Continue reading ""Where Are They?"
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