Watch live: ULA Atlas 5 rocket launches 29 Amazon Leo satellites from Cape Canaveral

Watch live coverage of the launch of a United Launch Alliance Atlas 5 rocket with a batch of 29 satellites for Amazon's Leo internet service on Saturday, April 4, 2026. Liftoff is scheduled during a 29-minute launch window that opens at 1:45 a.m. EDT (0545 UTC). The rocket will take a north-easterly trajectory on departure from Florida's Space Coast. Amazon’s LEO satellite internet constellation, originally called Project Kuiper, is designed to rival others, like SpaceX’s Starlink and Eutelsat's OneWeb. The mission features the most powerful Atlas 5 configuration, the 551, equipped with five solid rocket boosters from Northrop Grumman. Commentary will be provided by Spaceflight Now's Will Robinson-Smith, starting approximately one hour prior to liftoff. Videos like this are made possible by the support of our members. Join this channel to get access to perks: https://www.youtube.com/channel/UCoLdERT4-TJ82PJOHSrsZLQ/join