Gamma-Ray Burst Caused Mass Extinction?

Galvasean

It seems that gamma-rays from space may have been responsible for the massed extinction of the Ordovician period (488 to 443 million years ago) where about 70% of sea life died out.
Creepy stuff.

http://news.nationalgeographic.com/news/2009/04/090403-gamma-ray-extinction.html

And for no major reason here is a picture of an orthocone:

Rhys Essien

Follow up.

http://io9.com/5874028/deadly-gamma+rays-from-an-exploding-star-might-have-caused-a-mass-extinction

A scary thought are these Gamma Rays.

Allosaur

Hey Gal. It's an old theory, must have been a slow news week.
Animal Armegeddon episode 1. "Death Rays". concerns this. It's availible on youtube.

The problem with that theory is that there is no physical evidence available to coroberate it. But then there is a lack of physical evidence of any other cause for the Devonian / Carboniferous (DC) extinction either.

BTW don't be put off by the shows use of "Straight Naultioid" rather than Orthocone.

Galvasean

I saw that show actually. Seemed a bit sensationalist and lacking in concrete evidence in many cases.

Galvasean

PS: look at the OP, this thread is nearly 3 years old :pac:

Rubecula

No time limit on a good bit of Panic Spreading in 2012 Galv. So where will these errant gamma rays come from in December? :D

Mickeroo

Gamma rays you say?? :eek: