A United Launch Alliance Atlas V rocket and a SpaceX Falcon 9 rocket should lift off back-to-back from Florida's Space Coast. First, ULA is targeting 7 p.m. to launch the Atlas V — which is outfitted with five solid rocket boosters — and deploy the first production batch of Amazon Project Kuiper broadband satellites into low-Earth orbit.

Liftoff is now set for 10:09 p.m. from Cape Canaveral Launch Complex 40. The Falcon 9 rocket will be carrying the Starlink 12-23 mission to orbit. This is the latest batch of SpaceX's Starlink internet satellites. Should SpaceX not be able to launch at 10:09 p.m., opportunities exist until 1:49 a.m. (April 28).

Live updates from Monday night’s back-to-back ULA Amazon and SpaceX Starlink launches from Cape Canaveral Space Force Station and Kennedy Space Center.