AFP: German schoolboy, 13, corrects NASA's asteroid figures: paper

AFP: German schoolboy, 13, corrects NASA's asteroid figures: paper: "Both NASA and Marquardt agree that if the asteroid does collide with earth, it will create a ball of iron and iridium 320 metres (1049 feet) wide and weighing 200 billion tonnes, which will crash into the Atlantic Ocean.

The shockwaves from that would create huge tsunami waves, destroying both coastlines and inland areas, whilst creating a thick cloud of dust that would darken the skies indefinitely.

The 13-year old made his discovery as part of a regional science competition for which he submitted a project entitled: 'Apophis -- The Killer Astroid.'"