Kiss-and-capture: The dance of Pluto and Charon

Kiss-and-capture: The dance of Pluto and Charon

How did Pluto meet its largest moon, Charon? Many have speculated that Charon formed in an impact, but traditional models of planetary formation have struggled to explain many of the quirks of this system. This week, Adeene Denton, a research scientist at the University of Arizona, shares her team's new paper that suggests a "kiss-and-capture" may solve this mystery. Then Bruce Betts, The Planetary Society's chief scientist, discusses contact binaries in our Solar System and shares a new Random Space Fact in What's Up.

Discover more at: https://www.planetary.org/planetary-radio/2025-pluto-kiss-and-capture

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Book Club Edition: “The Edge of Space-Time” by Chanda Prescod-Weinstein

Book Club Edition: “The Edge of Space-Time” by Chanda Prescod-Weinstein

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Space Policy Edition: What's going on with commercial space stations?

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NASA's plan for what comes after the International Space Station (ISS) has been anything but stable. Since 2019, the agency's commercial space station strategy has shifted from free-flying vendor-oper...

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Rosalind Franklin and the search for life on Mars

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China’s Tianwen-2 spacecraft has successfully arrived at Kamoʻoalewa—a tiny, enigmatic "quasi-satellite" that dances along with Earth on its trek around the Sun. A fascinating scientific debate is hea...

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Book Club Edition: “To Be Taught, If Fortunate” with Becky Chambers

Book Club Edition: “To Be Taught, If Fortunate” with Becky Chambers

This outstanding novella, “To Be Taught, If Fortunate” by award-winning science fiction author Becky Chambers, is a passionate argument for the human exploration of space and the wonders we will find ...

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