Our Universe...In Perspective.

[turbo buicks]

Radiation travels at the speed of light. The danger of a supernova is that by the time you see it, it is too late, even if it is light years away and actually happened years in the past.

If we observed Antares going supernova tomorrow (it actually happened 500 years ago), most of the radiation (and danger) from Antares going supernova would reach the earth almost simultaneously with the light.

ok i see what ur sayin. i wasnt thinking of the radiation i was thinking of matter. like big chunks of star or whatever that could get thrown out from it. im no physicist though.