May 172013
Bright Explosion on the Moon
On May 17 a small rock hit Mare Imbrium and was detected visually. At ~40 kg and 56,000 miles per hour, the impact energy was about 5 tons TNT equivalent, and would have been visible to the naked eye.
I suspect that a similar impact on Earth would have been largely absorbed by the atmosphere.
[youtube IYloGuUZCFM]