Update: SpaceX successfully launches Falcon 9 on Tuesday evening

(Update, 11:48 p.m.) - The Falcon 9 launched as planned from Vandenberg Space Force Base on Tuesday evening.

The rocket launched at 9:01 p.m.

Despite landing on a drone ship in the Pacific, some residents heard and felt the rocket's descent.

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(Original, 1:11 p.m.) - SpaceX plans to launch a Falcon 9 rocket from Vandenberg Space Force Base at 9:01 p.m. on Tuesday.

The rocket will deliver 20 Starlink satellites to low-Earth orbit.

SpaceX will offer a live stream of the launch starting about five minutes before liftoff.

Following stage separation, about eight minutes after liftoff, SpaceX will aim to land the rocket's first stage booster on a droneship in the Pacific Ocean.

If the launch is scrubbed, the aerospace company says it has a backup launch opportunity available at 8:37 p.m. on Wednesday.