Earth, Asteroid

A near-Earth asteroid as wide as the Statue of Liberty is tall could strike Earth on Dec.22, 2032, alerting planetary defense ...
The closest of the asteroids to us—estimated to be about the size of a car—is whizzing through space at 27,358 miles per hour ...
YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a ...