The Leo Atlas 07 mission was the second to last flight that Amazon booked on a United Launch Alliance Atlas 5 rocket. Liftoff from pad 41 at Cape Canaveral Space Force Station happened at 7:53 p.m. EDT (2353 UTC).
The explosion happened at 9 p.m. EDT (0100 UTC) during a static fire test of the rocket at Launch Complex 36 at Cape Canaveral Space Force Station. Blue Origin was slated to launch a mission for Amazon Leo as soon as June 4.
The Starlink 10-53 mission was the 49th mission dedicated to flying SpaceX’s broadband internet satellites to low Earth orbit in 2026. Liftoff from pad 40 at Cape Canaveral Space Force Station 8:57 a.m. EDT (1257 UTC).