Bensemus t1_itrax6f wrote on October 25, 2022 at 6:54 PM

Reply to comment by foma_kyniaev in Deflecting asteroids is not enough — we need to know when they approach by burtzev

Planet killer is one that threatens life on the planet. Earth wasn't destroyed by Mars sized impact so no asteroid is actually threatening the structure of the planet.

15km is pushing humans towards extinction but not guaranteed, billions would die. 400m would be a natural disaster that could kill millions or more, depending on where it hit.

khorijinn t1_iuihujb wrote on October 31, 2022 at 4:13 PM

A 15 km asteroid hit would be a planet savior, in that it would wipe out most or all of it's human infestation and give it time to recover from our damage.