We have information on how you can watch the historic event live, as NASA is going to test its $300 million space battering ram on a real-life asteroid.
The Double Asteroid Redirection Test (DART) will be streamed on NASA's website and on the agency's YouTube channel at about 7 pm.
Live commentary from experts will be included in the NASA accounts on social media.
It's cool to blow things up. It is possible that the tech could save the planet from a killer asteroid strike at some point in the future if we are lucky. It's blowing stuff up in space to raise money. Popcorn is ready.
The result of hundreds of millions of dollars and collaborations between international public and private entities is a test of planetary defense.
DART's main team up is between NASA, the European Space Agency, and the Applied Physics Laboratory.
NASA and JHU will be the brawn of the mission, with the fridge-sized craft and its Italian "selfie-sat" camera making impact with one of the asteroids of the Didymos.
DART stakeholders include the initial public entity, as well as a number of private enterprises, including the company that launched DART into space.
It's going to be exciting to watch. Thanks to this amazing international team, we'll be able to do that later today.
There is more on DART.