NASA managed Monday to crash a small spacecraft directly into an asteroid, a 14,000-mile-per-hour collision designed to test whether such a technology could someday be deployed to protect Earth from a potentially catastrophic impact. The asteroid, Dimorphos, is the size of a stadium and is about 7 million miles from Earth at the moment. It orbits a larger asteroid named Didymos. Neither poses a threat to our planet now or anytime in the foreseeable future. This was just a test, NASA’s first demo