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Arrokoth sheds new light on planetary origins

Arrokoth
A computer-generated reconstruction of Arrokoth’s shape makes it look like a squashed snowman, but slightly less squashed than originally thought. (NASA / JHUAPL / SwRI Image / Roman Tkachenko)

The space snowman that was the focus of a close encounter with NASA’s New Horizons probe last year is helping scientists answer a cosmic question: How did the building blocks of the solar system get their start?

“This is a game-changer,” said Alan Stern, a planetary scientist at the Southwest Research Institute and principal investigator for the New Horizons mission.

Stern and other members of the New Horizons science team shared their latest findings about the snowman-shaped object now known as Arrokoth today at the American Association for the Advancement of Science’s annual meeting in Seattle. Those findings are detailed in a trio of studies published by the journal Science.

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By Alan Boyle

Mastermind of Cosmic Log, contributing editor at GeekWire, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.

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