Two years ago, a NASA spacecraft smashed into a small asteroid millions of miles from Earth to test a technique that could one day prove useful to deflect an object off a collision course with Earth.

The Federal Aviation Administration on Sunday announced it was approving just one SpaceX Falcon 9 mission, although SpaceX has submitted its mishap report into why the second stage from last week's Crew-9 mission failed to hit its planned target on reentry.

A European spacecraft is on its way to get an up-close look at an asteroid that NASA deliberately crashed its own vehicle into two years ago.