How do scientists find out if an asteroid might hit our planet? And what do they do if it’s on a collision course with Earth? We’ll meet a planetary defender - an astronomer who uses radar telescopes to defend our planet from space rocks! Edgard Rivera Valentín grew up in Puerto Rico, next to Arecibo, the world’s most powerful radar telescope. Hear the story ... Show More
Nov 14
What Sounds Do Fish Make?
What sounds do fish make? 🐟🎶 We know that cows say moo, and sheep say baa, but what do fish say? Come explore “Under the Sea” to discover the chorus of fish noises with help from fish ecologist Audrey Looby. We’ll find out how fish can be sneaky, loud, and even “slimy, grumpy ... Show More
23m 8s
Aug 2021
Lucy in the Sky With Asteroids
How did the planets form? How did life happen? Where did Earth’s water come from? To answer questions like these, scientists used to go big—looking at planets, dwarf planets, and moons—but now small is the new big. Technology is zooming in on the pint-size stuff—asteroids, comets ... Show More
30m 51s
Sep 2022
Can Asteroids Rock Our World? with Christina Hernández and Terik Daly
It's a beautiful night—the sky is clear, the stars are twinkling. You see a shooting star! Or is it a comet! Maybe a meteor? Whatever it is, it’s gone in an instant. But what if that whirring bit of space were headed... straight towards the Earth, not past it? Yeah, not so cute. ... Show More
1h 5m
Dec 2022
DART: The Impacts Of Slamming A Spacecraft Into An Asteroid
If an asteroid were hurling through space, making a beeline straight to Earth, how would humans prevent it from doing what it did to the dinosaurs? Would we bomb it? Would we shoot lasers at it like a scene from Hollywood's latest sci-fi flick? Well, the folks at NASA have design ... Show More
14m 7s
Mar 2024
The asteroid hunter
<p>Behind every space mission is a tale of hard work, love, and perseverance. Dante Lauretta, the principal investigator for NASA's OSIRIS-REx mission, joins Planetary Radio to share stories from his new book, "The Asteroid Hunter." Then Bruce Betts, the chief scientist of The Pl ... Show More
56m 3s
Apr 2024
An armada for asteroid Apophis?
Friday, April 13th 2029 – mark it in your calendar. That’s the day an asteroid the size of an aircraft carrier will fly past Earth, closer than some satellites. Don’t worry – it will miss, but it’ll will pass so close to Earth that it will be visible to the naked eye of 2 billion ... Show More
26m 37s