THE remains of a deep-space asteroid could soon be on a collision course with Earth and Mars.
Nasa has been testing its ability to redirect the course of objects floating near our home planet.
NASA/JHUAPLA Nasa spacecraft collided with Dimorphos, a moonlet orbiting the asteroid Didymous, nearly two years ago – and debris is set to head towards Earth[/caption]The agency selected Dimorphos, a small moon orbiting a larger asteroid, Didymos, as its target nearly two years ago.