Asteroid passing Earth is 'really unusually close'

An asteroid the size of an Olympic swimming pool will pass the Earth at a distance of just 27,700km (17,200mi) on Friday night.

People will need good binoculars or a telescope to see the asteroid at its closest - which in the UK will be at 19:25 GMT.

Jodrell Bank's Tim O'Brien explained just how "really unusually close" the asteroid would get to the Earth, and how scientists were so sure it would not come any closer.

BBC News