Scientists ound that a collision in the asteroid belt 470 million years ago created drastic changes to life on Earth. The breakup of a major asteroid filled the entire inner solar system with enormous amounts of dust leading to a unique ice age and, subsequently, to higher levels of biodiversity. User MistWeaver80, in the Biology subreddit, 06 Oct 2019
Scientists ound that a collision in the asteroid belt 470 million years ago created drastic changes to life on Earth. The breakup of a major asteroid filled the entire inner solar system with enormous amounts of dust leading to a unique ice age and, subsequently, to higher levels of biodiversity. User MistWeaver80, in the /r/space: news, articles and discussion subreddit, 06 Oct 2019
An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body User burtzev, in the Evolution subreddit, 22 Sep 2019
An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body User burtzev, in the Reddit Science subreddit, 22 Sep 2019