Earth May Once Have Had A Ring Like Saturn
12:15 minutes
Hundreds of millions of years ago, Earth may have looked quite different when viewed from space: Scientists propose it may have had a Saturn-like ring, made up of lots of smaller asteroids.
The new paper, published in Earth and Planetary Science Letters, proposes that this ring formed around 466 million years ago. A major source of evidence is a band of impact craters near the equator. The researchers also posit the ring would have shaded this equatorial area, possibly changing global temperatures and creating an icehouse period.
Ira speaks to Rachel Feltman, host of the Popular Science podcast “The Weirdest Thing I Learned This Week,” about this and other top science stories of the week, including how lizards use bubbles to “scuba dive” underwater, and ancient cave art that possibly shows a long-extinct species.
Segment Guests
Rachel Feltman
Rachel Feltman is a freelance science communicator who hosts “The Weirdest Thing I Learned This Week” for Popular Science, where she served as Executive Editor until 2022. She’s also the host of Scientific American’s show “Science Quickly.” Her debut book Been There, Done That: A Rousing History of Sex is on sale now.
Segment Transcript
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Meet the Producers and Host
About Kathleen Davis
@katjacquelineKathleen Davis is a producer at Science Friday, which means she spends the week brainstorming, researching, and writing, typically in that order. She’s a big fan of stories related to strange animal facts and dystopian technology.
About Ira Flatow
@iraflatowIra Flatow is the host and executive producer of Science Friday. His green thumb has revived many an office plant at death’s door.