Big Bertha (lunar sample)
Lunar Sample 14321, better known as "Big Bertha", is a lunar sample collected on the 1971 Apollo 14 mission. It was found in the Fra Mauro region of the Moon. At 8.998 kg (19.84 lb), this breccia rock is the third largest Moon sample returned during the Apollo program, behind Big Muley and Great Scott.
Big Bertha contains an embedded fragment of granite-like rock which may have been ejected from the Earth by a meteorite impact billions of years ago. If this origin were to be confirmed, that fragment would be the oldest known Earth rock. This claim has been disputed, however.