Supernova Ashes Found in Fossils Hint at Extinction Event

[Dryson]

http://www.space.com/33777-supernova-ash-found-in-fossils.html

Tiny magnetofossils in sediments from the Pacific Ocean floor have been found to contain iron-60, a type of iron produced in a supernova explosion that signals the death of a star.

Now scientists have discovered iron-60 within fossilized chains of magnetic crystals of a mineral known as magnetite. These "magnetofossils," each of which is about 90 nanometers — or billionths of a meter — large, were created by microbes known as magnetotactic bacteria.

It could be that the SuperNova spurred life here on Earth to take a radical change in evolution as well.

 

[Asbo Zaprudder]

Is it possible that a supernova event around 2.5 Mya put evolutionary pressure on our ancestors? It seems that there might have been an associated global climate change event. As for radical change, not so much -- it wasn't a mass extinction event. Perhaps it favoured the smarter man apes who could adapt more effectively to survive, breed and pass on their genes.