Asteroids that spin really fast

One of the great privileges of astronomy is that there's always something new and surprising to discover. It's a big universe. There's a lot in it. In appreciation of this simple joy, I thought I'd share a nifty discovery made by the Rubin Observatory*. This is a big ground-based telescope with an absolutely mammoth camera that is conducting a decade-long survey to unprecedented depth. It basically images the sky over and over again every night.