Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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When a massive power outage struck southern California in the 1990s, Los Angeles residents reportedly called 911 to express alarm about strange clouds hovering overhead; they were seeing the Milky Way for the first time.
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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A comet's tail always points away from the sun.
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