Light's Out: Asteroid Triggered Freezing Darkness That Killed Dinos
Friday, January 20, 2017 - 07:31
in Astronomy & Space
When a giant asteroid careened into Earth about 66 million years ago, the enormous collision led to the formation of an airborne "curtain" of sulfate molecules that blocked the sun's light and led to years of freezing cold and darkness, a new study finds.