Giordano Bruno (crater)

Giordano Bruno is a small crater on the moon. It has a prominent ray system. Were it not for the fact that it was possibly formed less than 1000 years ago, it would just be an obscure crater.

In the 1000's, two monks from Canterbury reported seeing what they described as two horns of light on the shaded part of the moon. Modern theories predict that there would a plume of molten matter rising up from the surface of the moon, which is consistent with the monks' description. In addition, the location they recorded fits in well with Bruno's location. Additional evidence of Bruno's youngness is its spectacular ray system: Because micrometeorites constantly rain down, they kick up enough dust to quickly erode a ray system. So there is probably enough circumstantial evidence to hold that Giordano Bruno was form during human history.

To add: The exact date