Deflecting asteroids is not enough — we need to know when they approach

Astronomers Have Found More Than 30,000 Near-Earth Asteroids… so far

The Lucy spacecraft will slingshot around Earth on its way to Jupiter’s Trojan asteroids on Sunday (October 16). The fly-by will offer watchers in Western Australia and the Western USA a chance to see it.

30 000 near-Earth asteroids discovered and rising