Among the numerous jobs that NASA takes care of on a daily basis is the critical task of monitoring the heavens for large asteroids. On March 17, while monitoring the Moon NASA scientists observed the largest impact ever recorded on the lunar surface.
According to NASA the impactor, which landed in a region known as Mare Imbrium, was roughly the size of a small boulder and the resulting explosion was visible by the naked eye here on Earth.
Watch A Video Hilighting the Impact:
Image and Video Courtesy of NASA and Wikipedia