A 40-kilogram space rock has slammed into the Moon at about 90,000 kilometres per hour, creating a bright flash of light as it exploded with a force of five tonnes of TNT, according to NASA.
An automated telescope captured the images of the March 17 explosion, the biggest seen since NASA began watching the Moon for meteoroid impacts about eight years ago.
The United States space agency says
the flash was so bright that anyone looking at the Moon at the moment of impact could have seen it without a telescope.
http://www.abc.net.au/news/2013-05-1...n-moon/4697932