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An asteroid just buzzed past Earth, and we barely noticed in time
- jjcolburnipson 7y agoWhat does "barely" noticed it mean?
- chownie 7y agoI think in this case it's referring to how early the asteroid was detected. Either it travelled so fast or our detection of asteroids is poor, because we only just detected it before it passed us.
- ksaj 7y agoIt was coming from the general direction of the sun. Nobody could see it until it got really close.
- ufmace 7y agoIt probably doesn't help much that all of our asteroid detection is through passive means. But then we don't necessarily want to go around blasting gigawatts of radar energy around the whole solar system either - better hope there aren't any not-so-friendly aliens watching the skies.