Any Astronomers here?
Is there any evidence of a Supernova within say, 500 LY of earth within, say, the last 100K years?
Any evidence at all?
Concerning the presently existing astronomical evidence of supernova blasts that have been recorded, how old are they? ( regardless of distance )
How old is the presently seen evidence of those explosions?
Is it fairly easy to recognize the post-supernova evidence?
I don't recall hearing/reading of any nearby (relatively) evidence of large clouds of ionized particles, x-ray emmissions from massively accelerated solar mass, etc....
Seems to me if you're going to claim "supernova killed the mammoths", pitted craters in mammoth tusks is not primary evidence to validate your claim..
The primary evidence is the remains of a supernova..
Where is it???
Seems to me that if there were a Supernova blast within 250 LY of earth, even 40K years ago, there would be ample astronomical evidence of such.
I'd like to know if that is the case also. If anyone in the know could weigh in...
Seems also that those particles would have not only slowed down and burned up some on entry into the earth's atmosphere, but would have riddled EVERTHING. Something traveling with enough force to leave *craters* in a tusk would likely have gone through bodies like bullets; everything, everywhere.