An asteroid which may be as big as a ten-storey building has passed close by the Earth, astronomers say. The object, known as 2009 DD45, thought to be 21-47m (68-152ft) across, raced by our planet at 1344 GMT on Monday.
The gap was just 72,000 km (44,750 miles); a fifth of the distance between our planet and the Moon.
International Astronomical Union's Minor Planet Centre (MPC), which catalogues Solar System objects, lists the closest recent flyby as 2004 FU162, a small asteroid about 6m (20ft) across which came within about 6,500km (4,000 miles) of our planet in March 2004. The latest object, 2009 DD45, passed by our planet at only twice the altitude of satellites in geosynchronous orbit.