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What if the Milky Manner and Andromeda galaxies collide? : Quick Wave : NPR

July 2, 2025
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What if the Milky Manner and Andromeda galaxies collide? : Quick Wave : NPR
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A NASA visualization exhibiting the Milky Manner and Andromeda at 4 billion years from now, in the event that they make an encounter.

Galaxy illustrations courtesy of NASA, ESA, Z. Levay and R. van der Marel (STScI) T. Hallas, and A. Mellinger. Visualization courtesy of NASA, ESA, and F. Summers (STScI)


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Galaxy illustrations courtesy of NASA, ESA, Z. Levay and R. van der Marel (STScI) T. Hallas, and A. Mellinger. Visualization courtesy of NASA, ESA, and F. Summers (STScI)


A NASA visualization exhibiting the Milky Manner and Andromeda at 4 billion years from now, in the event that they make an encounter.

Galaxy illustrations courtesy of NASA, ESA, Z. Levay and R. van der Marel (STScI) T. Hallas, and A. Mellinger. Visualization courtesy of NASA, ESA, and F. Summers (STScI)

The Andromeda galaxy lies simply past (…OK, about 2.5 million light-years past) our galaxy, the Milky Manner.

These galaxies are extra than simply neighbors: They’re gravitationally sure. And for the previous hundred years or so, scientists thought these galaxies existed in a long-term dance of doom — destined to crash into each other and mix into one massive galactic soup.

However a current paper out within the journal Nature Astronomy suggests this cosmic recreation of bumper automobiles might by no means come to a head in any respect. NPR Quick Wave host Regina G. Barber chats with computational astrophysicist Arpit Arora to be taught extra concerning the odds.

Considering more room episodes? Electronic mail us your query at shortwave@npr.org.

Pay attention to each episode of Quick Wave sponsor-free and help our work at NPR by signing up for Quick Wave+ at plus.npr.org/shortwave.

Hearken to Quick Wave on Spotify and Apple Podcasts.

This episode was produced by Rachel Carlson. It was edited by Rebecca Ramirez. Tyler Jones checked the details, and the audio engineer was Jimmy Keeley.



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