“Ancient carvings show comet hit Earth and triggered mini ice age”

It could be rather bad.  Especially if it hit your house:

https://www.newscientist.com/article/2128512-ancient-carvings-show-comet-hit-earth-and-triggered-mini-ice-age/

But what if it hit Kim Jong Un’s house?  Or Abu Bakr al-Baghdadi’s?  Or Ayman al-Zawahiri’s cave?  Or the Kardashians?