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.

Rockets are launching from both coasts today (April 28) in the United States, with SpaceX lining up back-to-back Starlink missions. A Falcon 9 rocket launched SpaceX's Starlink 11-9 mission this evening.