What If a Supernova Explodes near the Sun?

Fortunately, none of the stars presently near the Sun are of types which evolve into supernovæ. But as the Sun orbits the galaxy, its path takes it through star-forming regions where supernova explosions occur more frequently. There is evidence from the presence of the iron-60 isotope (which is formed only in supernova explosions) in rock strata for nearby supernova explosions in the Earth’s past.