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Rare green comet not seen since the Stone Age will zoom overhead tonight. Here's how to watch.
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On Feb. 1, a comet called C/2022 E3 (ZTF) will pass by Earth for the first time in 50,000 years, meaning the last time it cruised by our planet, Homo sapiens were still sharing the planet with Neanderthals. And according to calculations from astronomers, the comet will never come back.
But you don't have to wait until February to see the comet; there are a few ways to spot it before its closest approach, starting today.
livescience.com - Stone age comet c e3 watch 