Atlas 5 – Page 2 – Spaceflight Now

November 7, 2025

Breaking News

[ November 6, 2025 ] Issue with Atlas 5 booster liquid oxygen vent valve causes second scrub of ViaSat-3 F2 launch Atlas 5
[ November 6, 2025 ] SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Vandenberg SFB Falcon 9
[ November 5, 2025 ] Atlas booster valve issue scrubs launch of ViaSat-3 F2 satellite Atlas 5
[ November 5, 2025 ] SpaceX launches 29 Starlink satellites on Falcon 9 rocket from Cape Canaveral Falcon 9
[ November 4, 2025 ] President Trump renominates commercial astronaut Jared Isaacman for NASA administrator News

ULA launches Atlas 5 rocket on the company’s 100th national security mission

July 29, 2024 Will Robinson-Smith

The United States Space Force 51 (USSF-51) mission was the 58th and final time an Atlas 5 rocket launches a national security payload. Liftoff happened at Tuesday, July 30, during a three-hour window that opens at 6:45 a.m. EDT (1045 UTC).

ULA prepares for final Atlas 5 launch supporting a national security payload

July 27, 2024 Will Robinson-Smith

The mission will mark the 100th national security flight for United Launch Alliance and the 101st Atlas 5 rocket launch. Liftoff is targeting Tuesday, July 30, during a three-hour window that opens at 6:45 a.m. EDT (1045 UTC).

Third time’s the charm for the Boeing Starliner Crew Flight Test

June 5, 2024 Will Robinson-Smith

The launch of two NASA astronauts dealt with two previous scrubs due to a valve issue on the Atlas 5 rocket and then a ground system issue at the launchpad. Liftoff happened at 10:52 a.m. EDT (1452 UTC) on Wednesday, June 5.

NASA foregoes Sunday launch, delaying Starliner takeoff to at least Wednesday

June 1, 2024 William Harwood

The seemingly star-cross Boeing Starliner — within minutes of its long-delayed blastoff on the spacecraft’s first piloted test flight — was grounded again Saturday when one of three redundant computers managing the countdown from the base of the launch pad ran into a problem, triggering a last-minute scrub.

NASA says Boeing’s Starliner crew capsule can safely fly ‘as is’ with propulsion system helium leak

May 24, 2024 William Harwood

After nearly three weeks of exhaustive tests and data analysis, NASA managers said Friday they are confident Boeing’s oft-delayed Starliner crew capsule can safely launch “as is” June 1, saying a small helium leak in the ship’s propulsion system does not pose a flight safety concern.

NASA, Boeing and ULA announce June 1 as new target date for Starliner’s Crew Flight Test

May 23, 2024 Will Robinson-Smith

The latest launch date was announced late Wednesday evening, following a Tuesday night notice that May 25 was off the table. Liftoff of the Atlas 5 rocket on June 1 is set for 12:25 p.m. EDT (1625 UTC).

Boeing Starliner launch Saturday ruled out as helium leak analysis continues

May 22, 2024 William Harwood

Plans to launch Boeing’s oft-delayed Starliner spacecraft on its first crewed test flight Saturday were put on hold Tuesday night to give managers more time to evaluate a small helium leak in the ship’s propulsion system. A new launch target was not announced.

NASA, Boeing further delay Starliner Crew Flight Test launch amid ongoing helium leak review

May 17, 2024 Will Robinson-Smith

The shift in launch date is to allow more time to build in redundancy to account for the helium leak. The launch is currently scheduled for no earlier than Saturday, May 25, at 3:09 p.m. EDT (1909 UTC).

Boeing Starliner launch slips to May 21 to verify helium leak fix

May 14, 2024 William Harwood

Launch of a United Launch Alliance Atlas 5 rocket carrying Boeing’s Starliner capsule is slipping another four days, from Friday to next Tuesday, to give engineers time to make sure a helium leak in the crew ship’s propulsion system has been resolved, officials said Tuesday.

Atlas 5 valve repair will delay Starliner’s first crewed mission to May 17 at the earliest

May 8, 2024 Will Robinson-Smith

United Launch Alliance (ULA) is set to roll its Atlas 5 rocket and the Starliner spacecraft back to the Vertical Integration Facility on Wednesday to begin working on the problematic valve. The new launch date is no earlier than Friday, May 17, at 6:16 p.m. EDT (2016 UTC).