Two unusual things happened on Earth around 460 million years ago: a bunch of asteroid impacts near the equator & an intense global cold spell.
Possibly both were the result of an asteroid that broke up & gave our planet a pretty but deadly set of rings.
eos.org/articles/a-close-aster… #space #science #nature
A Close Asteroid Encounter May Have Once Given Earth a Ring
An unusual concentration of impact craters suggests that they may have been caused by the breakup of an asteroid that created a temporary debris ring around Earth.Kimberly M. S. Cartier (Eos)
