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STORY: Astronomers in Greece observed a 'green' comet as it passed close to Earththe first time it’s done so in 50,000 years, when Neanderthals still inhabited Eurasia Location: Corinth, Greece [Alkisti Bonanos, Astronomer]“It has a velocity of 57 kilometers per second. Its appearance is green because of its composition, it has diatomic carbon and cyanogen which makes it appear green.”Date: February 1, 2023 The green comet’s formal name is C/2022 E3 (ZTF)The comet had been lurking in the night sky for months It flashed through the sky at a distance of 26.4 million miles from Earth