Nearby Supernova Explosions May Have Affected Human Evolution

Nearby Supernova Explosions May Have Affected Human Evolution
It's only fair to share...Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on LinkedInDigg thisShare on TumblrShare on Reddit

Scientific American

The closest supernovas to Earth may have blasted the planet with enough radiation to influence human evolution, researchers say. Supernovas are the most powerful star explosions. These outbursts from enormous dying stars are visible all the way to the edge of the cosmos, and are bright enough to briefly outshine all of the stars in their host galaxies. For more than 50 years, scientists have suggested that nearby stellar fireworks could have influenced life on Earth by disrupting global climate and even triggering mass extinctions. Previous research calculated that supernovas occurring within about 325 light-years of Earth, which are expected about once every 2 million to 4 million years, could …

Click here to read more…

Share this post