China's Tianwen-2 has found a quasi-moon — and is about to land on it

The probe has rendezvoused with Kamo'oalewa, a 50-meter rock that loops around Earth as a quasi-moon. It's one of the closest asteroids to us — just 29 times the Earth-Moon distance — and it's been hanging out in our neighborhood for centuries without anyone noticing until now.

Kamo'oalewa's orbit is unusual. It circles the Sun once a year, but wobbles with Earth enough to look like a second moon from the right vantage point. The Tianwen-2 probe — China's second deep-space mission — found it, matched its speed, and parked beside it. The probe sent back the first pictures.

Next step: landing on the surface and collecting samples. That's the part no one's done from a quasi-moon before. If it works, the samples come home to Earth. If it doesn't, you've just spent a lot of fuel chasing a rock that's been right next to us all along.

Why this matters for us: it's a reminder that the cheap parts of space are closer than we think — and the folks who figure out how to grab them first will own the low-hanging fruit for decades.