Passing a historic test of humanity's ability to stop a celestial body from destroying life on Earth
a NASA spacecraft collided with an asteroid
seven million miles away on Monday to divert its orbit
The Dual Redirection Test (DART) Collider struck its target
the space rock Demorphos, at 7:14 p.m. ET (2314 GMT)
10 months after blasting off from California on its groundbreaking mission.