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Astronomers spot cosmic explosion that lasted 27 days
Researchers say the burst's late X-ray flaring ran roughly four times past the previous record of about six days, and they still can't fully explain why.
Watch it as it aired: Dale Bearman and Hank Ledger on this story, from BBN Tonight at 7:33 PM ET. Cartoon anchors, real headline: the facts are Space.com's, the jokes are ours.
At a glance
- First reported by Space.com: “Record breaker! Astronomers spot powerful cosmic explosion that lasted 27 days”, with reporting from Starlust and Phys.org.
- Covered on BBN on Tuesday, October 27, 2026, at 7:33 PM ET on BBN Tonight, by Dale Bearman and Hank Ledger.
The real story
The reporting behind this segment. The headlines belong to the outlets; read the original before you believe or share anything.
- Space.comRecord breaker! Astronomers spot powerful cosmic explosion that lasted 27 days
- StarlustAstronomers puzzle over a record-breaking cosmic explosion that lasted for 27 days - Starlust facts used on air
- Phys.orgA gamma-ray burst's engine stayed active for nearly a month, breaking the previous record facts used on air
What BBN said about it

Hank Ledger · Lead AnchorAstronomers have spotted a gamma-ray burst that kept flaring for twenty-seven days, far longer than anything of its type on record, Space.com reports.

Dale Bearman · Chief Skeptic & ContributorTwenty-seven days. These things are meant to be over before you've finished your tea.

Hank Ledger · Lead AnchorThe previous record for that kind of late flaring was about six days after the burst.

Dale Bearman · Chief Skeptic & ContributorSo it didn't beat the record, it flattened it.

Dale Bearman · Chief Skeptic & ContributorAnd the first burst alone ran fifteen point six hours, Phys.org says, before any of the flaring.

Hank Ledger · Lead AnchorAnd the twenty-seven days are measured in the burst's own frame. We watched the flaring for about fifty-one.

Dale Bearman · Chief Skeptic & ContributorFifty-one. Fine print, you see. Even the record needs an asterisk.

Hank Ledger · Lead AnchorThe researchers can't fully explain it. One idea is a star about a thousand times the radius of the Sun, according to Starlust.

Hank Ledger · Lead AnchorAnother involves a magnetar.

Dale Bearman · Chief Skeptic & ContributorMy theory is the universe kept the meeting going because nobody wanted to be the one to say the agenda was finished.

Hank Ledger · Lead AnchorMine is that the lead author called it an extremely late flare. I've sent emails like that. About lunch.
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