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.

The Starlink 12-23 mission lifted off into the night from Cape Canaveral SLC-40. Onboard were 23 Starlink satellites.