/u/Emu_or_Aardvark's posts
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The newly launched Transiting Exoplanet Survey Satellite will find exoplanets by observing stars dimming as they pass between the star and the telescope. What tiny percent of exoplanets happen to lie in this narrow range?
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When did the earliest civilizations understand what caused lunar and solar eclipses and what practical observations did they use to determine this?
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Does the moon actually rotate about its axis or only appear to because it is gravitationally locked?
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If a civilization technologically equivalent to ours existed in a planet around a nearby start, what signs of intelligent life would they observe coming from Earth?
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