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Comet C/2022 E3 Glows Green in Our Sun’s Ultraviolet Light

Brandon Spekter in LiveScience describes what viewers should see when comet C/2022 E3 revisits earth including UV chemical breaking of C2 bonds to create green glow. Excerpts: On Feb. 1, a bright-green comet named C/2022 E3 (ZTF) will make a close approach to Earth for the first time in 50,000 years. Swooping within 26 million miles (42 million kilometers) of our planet, the comet will offer a rare night-sky spectacle last seen when modern humans shared our planet with Neanderthals. But you don’t have to wait until February for your chance to glimpse the comet; it is already visible in the…
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