Asteroid the size of Empire State Building may hit Earth in 2100s: NASA

A NASA study says asteroid 'Bennu', classified as "potentially hazardous", has a slight chance of hitting the Earth but it's unlikely to take place until the 2100s. The asteroid is 500 metres wide, a bit wider than the Empire State Building is tall. Scientists said there was a 1-in-1,750 chance that it could collide with Earth between now and 2300.