Nasa is planning to launch a probe to collect rock samples from an asteroid it fears could one day hit the Earth.
The asteroid, named Bennu, can be seen from Earth as it crosses our orbit every six years.
Bennu, which is around 500 metres in diameter at its equator and travels around the sun at 63,000mph, will pass between Earth and the moon in 2135.
“That 2135 fly-by is going to tweak Bennu’s orbit, potentially putting it on course for the Earth later that century,” Dante Lauretta, professor of planetary science at Arizona University, toldThe Sunday Times.
“It may be destined to cause immense suffering and death,” he added.“