Lump of rock 50 metres long will soar through sky at about 8 miles a secondAnyone happening to glance towards the heavens in a week's time and glimpse an 50-metre-long lump of rock hurtling ominously through the skies need not panic.Although it will pass closer to us than any asteroid has for the last 15 years – closer even than the TV satellites that girdle the planet – Nasa insists that 2012 DA14 will miss the Earth by a good 17,100 miles (27,520km)."No Earth impact is possible," said Donald Yeomans, an astronomer with the US space agency.He also pointed out that the planet is bombarded ... Read More