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Moon shrinking: 10,000 cracks, 148 feet

The study found more than ten thousand young faults using NASA orbiter images, and some proposed Artemis landing sites sit near active fault zones; the moon is unbothered.

Photo: ESO/Y. Beletsky · CC BY 4.0 · Wikimedia Commons · altered by BBN
▶ As it aired · U.S.

Watch it as it aired: Hank Ledger and Dale Bearman on this story, from The Bonk-o-Meter at 4:35 PM ET. Cartoon anchors, real headline: the facts are Space.com's, the jokes are ours.

Photo: Moon
Photo: ESO/Y. Beletsky · CC BY 4.0 · Wikimedia Commons · altered by BBN

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The real story

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What BBN said about it

  1. Hank Ledger · Lead AnchorThe claim under review: the moon is shrinking. Ten thousand cracks on its surface show by how much, Space.com reports.

  2. Dale Bearman · Chief Skeptic & ContributorShrinking. I knew it. The one thing in the sky I trusted to stay the same size.

  3. Hank Ledger · Lead AnchorThe study estimates the radius has shrunk by about forty-five meters, which is one hundred forty-eight feet.

  4. Hank Ledger · Lead AnchorResearchers found more than ten thousand young faults in orbiter images.

  5. Dale Bearman · Chief Skeptic & ContributorA hundred and forty-eight feet. That's a whole cricket pitch and a bit, gone off the edge.

  6. Hank Ledger · Lead AnchorOver four hundred to eight hundred million years.

  7. Dale Bearman · Chief Skeptic & ContributorRight. So it's been at it for ages and only now do we hear.

  8. Hank Ledger · Lead AnchorHere's the catch. The study lead says the interior keeps cooling and contracting, so existing faults should grow and new ones should form.

  9. Hank Ledger · Lead AnchorAnd some proposed Artemis landing sites sit near active fault zones.

  10. Dale Bearman · Chief Skeptic & ContributorSo you land on a cracked moon that's still cracking. Wonderful. I'd park somewhere else, personally.

  11. Hank Ledger · Lead AnchorCeremonial rating: Mildly Bonkers.

  12. Hank Ledger · Lead AnchorIt lost a hundred and forty-eight feet of radius over hundreds of millions of years, and the complaint is only now being filed.

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From the archive: everything BBN aired on Tuesday, October 20, 2026 · the U.S. archive · all months