NASA’s DART mission is scheduled to slam a refrigerator-sized impactor into the tiny moon of the asteroid Didymos, this evening at approximately 7:14 PM, EST.
DART stands for Double Asteroid Redirection Test, a name that perfectly described the mission. The DART impactor will hit the tiny body and subsequent measurements will determine if its orbit has been sufficiently altered by the impact.
If successful, this mission will act as a proof of concept for the strategy of knocking asteroid that might impact the Earth into safer orbits.
The mission will be covered on NASA television