re: Supernovae
Yes, the scientists base their "3 SN per century on average for our galaxy" theory mainly on observations of other galaxies and their supernovae remnants and how quickly their traces disappear.
Raoul
Space/Science » in reply to re: Supernovae
Yes, the scientists base their "3 SN per century on average for our galaxy" theory mainly on observations of other galaxies and their supernovae remnants and how quickly their traces disappear.
Raoul