4K Replay: ULA launches final Atlas 5 551 rocket, supporting Amazon Leo satellite constellation [2:23]

On Tuesday, July 2, United Launch Alliance launched the final Atlas 5 rocket flying in a 551 configuration. The rocket featured a five-meter payload fairing, five solid rocket boosters, and one RL10 upper stage engine. The mission, Atlas 5 Amazon Leo 8 (aka Leo Atlas 8), sent 29 satellites into low Earth orbit with deployment happening less than 30 minutes after liftoff. Amazon purchased nine flights onboard Atlas 5 rockets. The first of those launched the Protoflight mission in 2023, followed by eight batches of production satellites. The first Atlas 5 551 rocket launched on January 19, 2006, in support...