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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Mars had an oxygen-rich atmosphere around 4 billion years ago
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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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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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