A United Launch Alliance Atlas 5 551 rocket will launch 27 of Amazon’s Project Kuiper broadband internet satellites into low Earth orbit. The spacecraft will be deployed at an altitude of 280 mies (450 km) in altitude and will eventually raise to an operating altitude of 392 miles (630 km). The Kuiper Atlas 3 mission is the fifth launch of Kuiper satellites to date, following two missions using ULA’s Atlas 5 rockets and two missions on SpaceX’s Falcon 9 rockets. This launch will give Amazon a total of 129 satellites in LEO.