NASA’s Double Asteroid Redirection Test (DART) spacecraft is planned to collide with the asteroid Dimorphos, some 6.8 million miles from Earth, this evening. Here's how to watch it.
There are more than 10,000 asteroids known in near-Earth orbits of “city-buster” size. NASA is putting off a mission to find the ones we don’t know about.
It’s never aliens. Nonetheless, Congress, NASA and the Defense Department have embraced a new era of UFO investigations.
Delayed rocket launches, especially first, test launches, are normal for new rockets, but Monday’s delay of Artemis is an emblematic one for the SLS.
Experts predict that 20 percent to 40 percent of the Chinese rocket body’s immense mass will survive its fiery journey through Earth’s atmosphere to the planet’s surface, but not in one piece.