The Arecibo Observatory, a huge radio telescope built inside of a Puerto Rican sinkhole, is best known for its efforts to search for radio signals from aliens.
But it's also a powerful radar station that can ping passing objects in space and film the echoes.
Arecibo started doing just that on Sunday, capturing incredible new movies of a fast-moving asteroid dubbed 2015 BN509.
What the images show is kind of adorable: a space rock that looks like a giant peanut.
Just look at it tumble through the void in this animated GIF:
Here's a closer look at the rotating asteroid that Arecibo scientists recorded:
But don't let this cute-looking space rock fool you.
It's not only respectably big, at about 200 meters (660 feet) wide by 400 meters (1,310 feet) long — taller than the Empire State Building in New York — but NASA has also deemed it "potentially hazardous," meaning its orbit through space might one day lead it to smash into Earth.