Summary:
- NASA's DART mission successfully crashed into the asteroid Dimorphos, which is the smaller of two asteroids in the Didymos system.
- The impact of the DART spacecraft changed the orbit of Dimorphos around its larger companion asteroid, Didymos.
- This was the first time humanity has intentionally altered the motion of a celestial object, and it demonstrates our ability to potentially deflect dangerous asteroids in the future.