SpaceX will attempt to launch a satellite into space aboard its Falcon 9 rocket and then land part of the rocket back at the base.
If all goes as planned, it'll be SpaceX's first such landing on the West Coast.
People in Santa Barbara, Ventura and San Luis Obispo counties could hear sonic booms from the launch. Elon Musk himself tweeted "This won't be subtle."
The mission could also create a spectacular light show, depending on weather conditions.