We already had something a bit like this, several years ago when a small asteroid exploded over Chelybinsk, Russia. 1000 people were injured. Has humanity sat

We already had something a bit like this, several years ago when a small asteroid exploded over Chelybinsk, Russia. 1000 people were injured. Has humanity sat up and decided to take this threat seriously? Nope. Most likely, this was a test from some aliens to see if we're smart enough to avoid a much larger, extinction-level asteroid headed our way, and to try to get us to prepare ourselves better without violating the Prime Directive too badly. We failed.