Posted by:
helemon
(
)
Date: December 27, 2010 04:39AM
http://io9.com/5717053/how-cosmic-rays-could-have-caused-one-of-the-worst-mass-extinctions-on-earth?skyline=true&s=i"Every 60 million years or so, astronomers believe that our planet cycles northward in the galactic plane (for the same reason planets cycle around the sun, only on a much vaster scale). Without the galactic plane's magnetic field shielding us, we might be in for a high dose of radiation. This might be one reason why we see mass extinctions happening with a fair amount of regularity on Earth over the past 500 million years."
So every 60 million years God decides to shake things up by killing off nearly all the life he created and seeing what happens with the survivors?