SpaceWe’ve lost track of more than 900 near-Earth asteroids More than 900 asteroids hurtling close to Earth were seen just once and then lost. Some may be kilometres across, and they could be just about anywhere News
SpaceA 300-kilometre space rock has vanished since we saw it in 1995 Don’t feel so bad for losing your keys. Astronomers somehow lost a huge space rock first seen 22 years ago – and it’s far from the first cosmic object to go missing News