How Do We Know There Are Exoplanets?
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Key Facts In This Video
The way we discovered the first planets outside our solar system was with the Doppler Technique. 00:25
Actually trying to see a planet would be like standing on Hawaii and looking at flame flickering near a lighthouse in California. 02:26
Every 30 minutes, Kepler takes a measurement of the brightnesses of 160,000 stars. 03:41
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