If you stare at the moon long enough...

[Locutus]

...as our funny little California boy Gerry Brown might say, sh!t happens.

ScienceCasts: Bright Explosion on the Moon - YouTube


If you can't invest the 4:01, then here's just the bfe:

17Mar2013SD_impact_3h50m542.7s - YouTube


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Bright Explosion on the Moon - NASA Science