Chance of 55,000mph asteroid the size of Buckingham Palace hitting Earth 'going up'
Scientists have warned an asteroid the size of Buckingham Palace is increasingly likely to hit Earth in the next decade - but the chances are still very small. NASA and the European Space Agency (ESA) are tracking the giant space rock, dubbed 2024 YR, as it hurtles through the cosmos at speeds of up to 55,000mph.