Sounds from Mars, Dave Gruel and Dave Grohl
Wes talks with Shawn this week about the first sounds of Perseverance moving on Mars and why they sound the way they do. Plus, new data suggest that Mars' oceans may still be on the surface just in a different form. Also: giant space junk, interstellar objects from other solar systems, and a refueling station near Saturn
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The skinny
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