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Astronomers discover first green star and reddest white dwarf

A new study finds white dwarfs, the cores of dead stars, glow in purple, pink and green shades; BBN notes the name stays unchanged.

Photo: NOIRLab/NSF/AURA/J. da Silva/Spaceengine Acknowledgment:… · CC BY 4.0 · Wikimedia Commons
▶ As it aired · Tech

Watch it as it aired: Dale Bearman and Hank Ledger on this story, from BBN Newsroom at 2:21 PM ET. Cartoon anchors, real headline: the facts are Live Science's, the jokes are ours.

Photo: White dwarf
Photo: NOIRLab/NSF/AURA/J. da Silva/Spaceengine Acknowledgment:… · CC BY 4.0 · Wikimedia Commons

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The real story

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What BBN said about it

  1. Hank Ledger · Lead AnchorAstronomers have found what appears to be the first green star ever seen, the science site Live Science reports.

  2. Dale Bearman · Chief Skeptic & ContributorA green star. I'd like it noted I have never trusted a star that changes its story.

  3. Hank Ledger · Lead AnchorIt's a white dwarf, the leftover core of a dead star. A new study says these remnants come in many colours, including purple and pink.

  4. Dale Bearman · Chief Skeptic & ContributorPurple. Pink. Green. Somewhere a textbook has a very confident chapter called White Dwarfs.

  5. Hank Ledger · Lead AnchorThe same study also found the reddest white dwarf ever seen.

  6. Dale Bearman · Chief Skeptic & ContributorA red white dwarf. If the label can be that wrong, Hank, what else on the star chart is mislabelled?

  7. Dale Bearman · Chief Skeptic & ContributorThink about that for a moment, because astronomers clearly didn't.

  8. Hank Ledger · Lead AnchorMost of it, probably.

  9. Dale Bearman · Chief Skeptic & ContributorI want the word white formally withdrawn. A century of paperwork, and nobody checked the colour.

  10. Hank Ledger · Lead AnchorSo the green one is still called a white dwarf.

  11. Dale Bearman · Chief Skeptic & ContributorOf course it is.

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