Now we see it, now we don’t Andrezej Wojcicki/SPL
We have lost more than 900 near-Earth asteroids. We’d seen each of these potential near-Earth asteroids once, but we didn鈥檛 continue tracking them, so we don鈥檛 know where they are or if they鈥檙e on a crash course with Earth.
Between 2013 and 2016, 17,030 potential near-Earth asteroid (NEA) candidates were added to a list maintained by the International Astronomical Union鈥檚 Minor Planet Center. Of those, about 11 per cent were categorised as 鈥渋nitially unconfirmed鈥. This means that the few observations we had were not enough to…
