Asteroid's got a Moon

Here's the asteroid "Ida" (31K diameter) with its very own moon, Dactyl (1.4K diameter). Coming at ya live!

That Ida has a cute little moon gives scientists reason to believe many/most larger asteroids have moons as well, since, as the idea goes, debris is scattered around the asteroids often enough, and it's more than likely some of this debris will form an orbit, at least for awhile.
Here's tiny Dactyl, cutest li'l baby moon of Sol's System!

Once again, just for perspective, there's more accessible metals and precious stuff like gold on rocks like Dactyl than ever dug up on Earth, for all of time. Just waiting for us out there. Or, conversely, on an eventual collision course. Either way, we're rich!