Excerpt:
'Scientists say they have found the world's largest asteroid crater in central Australia. The chance finding suggests a twin-asteroid struck the Warburton Basin over 300 million years ago - with devastating effects.
The newly discovered crater in the Warburton Basin in central Australia measures over 400 kilometers in diameter - pushing South Africa's Vredefort Crater into second place with a comfortable margin of 100 kilometers.'
Mega asteroid crater discovered in Australia | Sci-Tech | DW.DE | 24.03.2015
In comparison, the Chicxulaub asteroid impact crater on the Yucatan Peninsula in Mexico which is one of the suspects in the extinction of the Dinosaurs some 65 million years ago is a bit more than 180 Kilometers in diameter.