All Episodes

July 11, 2025 8 mins
A rare visitor from another star system has been spotted: the interstellar comet 3I/ATLAS! It was detected July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System, or ATLAS. Most known comets orbit the Sun and are bound by the gravity of the solar system ... but this object came from far beyond the pull of our Sun, traveling 137,000 miles per hour from another star. Now, scientists are racing to get a good image of it, in the hopes it can answer big questions like: What is the universe like where this comet is from? Is the solar system we live in unique?

Want us to cover more space news? Tell us by emailing shortwave@npr.org! We'd love to know what you want to hear from us.

Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at
plus.npr.org/shortwave.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy
Mark as Played

Advertise With Us

Popular Podcasts

Dateline NBC

Dateline NBC

Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations. Special Summer Offer: Exclusively on Apple Podcasts, try our Dateline Premium subscription completely free for one month! With Dateline Premium, you get every episode ad-free plus exclusive bonus content.

The Breakfast Club

The Breakfast Club

The World's Most Dangerous Morning Show, The Breakfast Club, With DJ Envy, Jess Hilarious, And Charlamagne Tha God!

Crime Junkie

Crime Junkie

Does hearing about a true crime case always leave you scouring the internet for the truth behind the story? Dive into your next mystery with Crime Junkie. Every Monday, join your host Ashley Flowers as she unravels all the details of infamous and underreported true crime cases with her best friend Brit Prawat. From cold cases to missing persons and heroes in our community who seek justice, Crime Junkie is your destination for theories and stories you won’t hear anywhere else. Whether you're a seasoned true crime enthusiast or new to the genre, you'll find yourself on the edge of your seat awaiting a new episode every Monday. If you can never get enough true crime... Congratulations, you’ve found your people. Follow to join a community of Crime Junkies! Crime Junkie is presented by audiochuck Media Company.

Music, radio and podcasts, all free. Listen online or download the iHeart App.

Connect

© 2025 iHeartMedia, Inc.