The Story Behind a Once-in-a-Lifetime Green Comet That’s About to Fly Past Earth
The Story Behind a Once-in-a-Lifetime Green Comet That’s About to Fly Past Earth
TIME
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Green comet zooming our way, last visited 50,000 years ago
SeattlePI.com
CAPE CANAVERAL, Fla. (AP) — A comet is streaking back our way after 50,000 years.
The dirty snowball last visited..