United Launch Alliance (ULA) is an American launch service provider, a joint venture between Lockheed Martin Space and Boeing Defense, Space & Security. As a launch provider, ULA designs, assembles, sells, and launches rockets like the Atlas V and Vulcan Centaur, providing access to space for national security payloads, commercial satellites, and deep-space exploration missions. Its primary customers include the U.S. Department of Defense, NASA, and commercial entities. Key activities involve launch services, rocket development, and partnerships with organizations like NASA and ESA for various space missions.
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United Launch Alliance conducted three missions for Amazon Leo.
The launch of a United Launch Alliance Atlas V carrying the ViaSat-3 F2 mission for Viasat is planned for no earlier than Thursday, November 13.
The only other rockets to launch from Florida this year were Blue Origin's New Glenn rocket, a United Launch Alliance Vulcan rocket, and three ULA Atlas V rockets.
The United Launch Alliance Atlas V rocket is positioned atop Space Launch Complex-41 for a scheduled liftoff.
Viasat held its Q2 results call on Friday, November 7, 2025, as it awaited the second ViaSat-3 satellite launch, which United Launch Alliance (ULA) had scrubbed twice.
The Vulcan Centaur rocket from United Launch Alliance, which also debuted in 2024, has only flown once so far this year.
United Launch Alliance is targeting a launch date of November 14th at 03:00 UTC for the Atlas V 551 mission carrying ViaSat-3 F2.
The launch of a United Launch Alliance Atlas V carrying the ViaSat-3 F2 mission for Viasat was scrubbed due to an issue with the booster liquid oxygen tank vent valve.
ULA announced the scrub of the launch at 9:04 p.m. EST.
United Launch Alliance scrubbed the ViaSat-3 F2 launch on November 5.
The launch of a United Launch Alliance Atlas V carrying the ViaSat-3 F2 mission for Viasat is scrubbed due to an issue with the booster liquid oxygen tank vent valve.
ULA scrubbed the ViaSat-3 F2 launch due to an issue with the Atlas V booster liquid oxygen tank vent valve.
ULA was conducting fueling operations ahead of the Thursday launch when the valve issue reoccurred.
ULA attempted to resolve the vent valve issue during the launch window on Wednesday night before scrubbing the launch.
The scrub of the ViaSat-3 F2 launch was the second consecutive night ULA called a scrub.
ULA will evaluate the hardware and announce a new launch date when available.
Liftoff of the United Launch Alliance Atlas V rocket is targeted for 10:16 p.m. EST (0316 UTC) tonight.
United Launch Alliance (ULA) planned to launch an Atlas V rocket no earlier than 10:24 p.m. from Cape Canaveral Complex 41 for the second in Viasat's satellite fleet.
A second countdown has begun for the United Launch Alliance Atlas V rocket to deliver the ViaSat-3 F2 ultra-high-capacity broadband satellite into space.
The countdown for ULA's Atlas V rocket launch stopped at 4 minutes due to troubleshooting an issue.