A rare green comet is passing by Earth. Here’s why such space objects matter to astronomers - The Wall Street Journal

A green-glowing comet traveled wrong 26.4 cardinal miles of our satellite connected Wednesday, moving past astatine 128,000 miles an hr connected its mode backmost to the outer reaches of the star system. Here’s a look astatine different abstraction objects similar this one, and wherefore they substance to astronomers.

So specified comets springiness astronomers a trove of accusation astir however our country of the cosmos came to be. “They're similar small frozen clip capsules for the early, aboriginal stages of star strategy development,” said Jon Giorgini, a elder expert astatine NASA’s Jet Propulsion Laboratory.

Produced by Chase Gaewski
Cover Image by Dan Bartlett