An asteroid the size of a double decker bus will narrowly pass Earth tonight in one of the closest such encounters ever recorded.
NASA said that the newly discovered asteroid, known as 2023 BU, will zoom 2,200 miles (3,600km) above the southern tip of South America - nearly the same distance as the UK to Cyprus, or London to Cairo.
That's 10 times closer than the bevy of communication satellites circling overhead.
