A 'potentially hazardous' asteroid the size of a football stadium is set to skim past Earth later today.
The asteroid, called 2008 OS7, is expected to come as close as 1.7 million miles to our planet at 14:41 GMT – about seven times further out than the moon.
It is estimated to be up to 1,574 feet (480 metres) in diameter, which is longer than the Tottenham Hotspur stadium (820 feet or 250 metres).
As 2008 OS7 flies past Earth, it will be travelling at a speed of 18.1 km per second or just over 40,000 miles per hour – roughly 50 times the speed of sound.