Interstellar Comet 2I/Borisov Is Coming: Here's What You Need To Know. Comet 2I/Borisov will reach its closest approach to the sun on December 8, 2019. We talk to planetary astronomer Michele Bannister about where the heck this comet came from, and what it tells us about our galaxy. Follow Maddie on Twitter — she's @maddie_sofia. And email the show at shortwave@npr.org.
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An Interstellar Wanderer Is Coming Our Way

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An Interstellar Wanderer Is Coming Our Way

An Interstellar Wanderer Is Coming Our Way

An Interstellar Wanderer Is Coming Our Way

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  • <iframe src="https://www.npr.org/player/embed/784214530/784291013" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
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A photo from the Hubble Space Telescope of the comet 2I/Borisov at a distance of 260 million miles from Earth. NASA, ESA and D. Jewitt (UCLA) hide caption

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NASA, ESA and D. Jewitt (UCLA)

A photo from the Hubble Space Telescope of the comet 2I/Borisov at a distance of 260 million miles from Earth.

NASA, ESA and D. Jewitt (UCLA)

Comet 2I/Borisov will reach its closest approach to the sun on December 8, 2019. It's only the second interstellar object to ever be detected as it passes through our solar system. We talk to planetary astronomer Michele Bannister about where the heck this comet came from and what it tells us about our galaxy. Follow Maddie on Twitter — she's @maddie_sofia. And email the show at shortwave@npr.org.

This episode was produced by Rebecca Ramirez and edited by Geoff Brumfiel.