13,000 tons of space junk clutters Earth orbit. Here's how it could be cleaned up

Seventy years ago, Earth had only one satellite: the moon.

Now it has more than 15,000—about 10,000 of which are owned by Elon Musk's SpaceX.

The world's first trillionaire plans to launch 1 million more satellites, each roughly 70 meters (230 feet) long and 20 meters (66 feet) wide, that would form a data center megaconstellation. ...