But Asteroid 2010 SO16 has an unusual 'horseshoe' orbit
(NEWSER) - Earth has a new follower: Asteroid 2010 SO16, which has joined the Earth's path around the sun and could follow it for the next 120,000 to 1 million years, scientists say. But there's one odd thing about the asteroid, which just so happens to be the largest space rock discovered so close to Earth: It orbits the sun in a horseshoe pattern. More»