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A comet known as C/2022 E3, marked by its bright green nucleus and long faint ion tail, will be on display in the Earth sky later this month — possibly for the first time ever or at least for thousands of years.

"If C/2022 E3 has ever passed through the solar system before, it would have last been seen in the sky more than 10,000 years ago," says Jon Giorgini, a senior analyst at NASA's Jet Propulsion Laboratory.