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universetoday.com
M7onm
TIL Eclipses May Generate Atmospheric Shocks
X0prk
TIL in 1973, a Harvard astrophysicist suggested that we won't discover more advanced civilizations because they don't want us to find them and have the technology to ensure we never do. They have also set aside our planet as a zoo wherein they can observe us. He coined this idea the Zoo Hypothesis.
W7MQ4
TIL, the sun in our solar system, Sol, is not a member of any constellation. Constellations are categorized by their shape as perceived from our solar system. Therefore, for Sol to be a member of a constellation we would need to travel to another star system to perceived the new "shape".