Earth's Mini-Moons: Coffee-Table Size, Nine Months, Then Gone
From the BBN segment “Rubin telescope should find more Earth mini-moons”, cut down to under a minute.
The full story and the real reporting behind it (Space.com) →
From the BBN segment “Rubin telescope should find more Earth mini-moons”, cut down to under a minute.
The full story and the real reporting behind it (Space.com) →
What BBN said on air. The facts are in the original report: Space.com.
Hank LedgerAstronomers expect the Rubin telescope in Chile to find more of Earth's mini-moons, small asteroids that wander close and are briefly captured by our gravity, Space.com reports.
Vera BullockMoons, plural. I'd been told we only had the one.
Hank LedgerOnly two have ever been confirmed, and both were found by the Catalina Sky Survey in Arizona.
Vera BullockSo Earth has a small, exclusive lunar program. I'd call it boutique.
Hank LedgerThe modelling says the biggest one at any moment is typically about seventy-five centimetres across. That's a coffee table.
Vera BullockA coffee table.
Hank LedgerAnd a typical one stays about nine months, circles Earth roughly three times, and leaves. One possible third, called Sar2901, might even be artificial.
Vera BullockArtificial means someone left it up there.
Vera BullockI'd say we're being generous hosts, and the moon is simply on a short residency, with a limited run.
Hank LedgerNine months, three laps, and then it leaves. Every guest I've ever had does exactly that.