Whew! That was close!
Billion-Ton Comet May Have Missed Earth by a Few Hundred Kilometers in 1883
A reanalysis of historical observations suggest Earth narrowly avoided an extinction event just over a hundred years ago.
That’s a billion-ton comet that had broken into thousands of pieces. Had they hit the Earth, the investigating team estimates there could have been over 3,200 “Tunguska events” over 48 hours.
That’d put a crimp in anyone’s day.
A Seat By The Fire 