What is Near-Earth asteroid?
'''Near-Earth asteroids''' (NEAs) are [[asteroid]]s whose [[orbit]]s are close to [[Earth]]'s orbit. A few tens of thousands have been found. Sometimes one crashes into earth. We try to find out if any are going to hit Earth using [[Asteroid impact prediction]]. Two near-Earth asteroids have been visited by [[spacecraft]]: [[433 Eros]], by NASA's Near Earth Asteroid Rendezvous probe and [[25143 Itokawa]], by the JAXA Hayabusa mission. == Related pages == *N[[near-Earth object|ear-Earth object]] *[[Asteroid impact prediction]] {{science-stub}} [[Category:Asteroids]]