SpaceFlight

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.

The mission will break another record for SpaceX, marking the first time the company has achieved 14 launches in a single month. Liftoff is set for 7:47 p.m. EDT (2347 UTC) Friday.

The Earth observing spacecraft will study clouds and aerosols to further our understanding of climate change. Liftoff is set for 3:20 p.m. PDT (6:20 p.m. EDT, 2220 UTC).

The mission comes on the heels of SpaceX outlining the next test flight of its Starship rocket in southern Texas. Liftoff of the Starlink 6-60 mission is set for 7:30 a.m. EDT (1130 UTC).

The mission will focus on proving the reusability of the rocket and not on additional flight objectives, like operating the payload bay door or reigniting the vacuum engines on the Ship upper stage. The June 5 launch window opens at 7 a.m. CDT (8 a.m. EDT (1200 UTC).

The two missions will be launched within roughly three weeks of one another from New Zealand. Liftoff of the Electron rocket with the PREFIRE-1 satellite is set for 7:15 p.m. NZST (3:15 a.m. EDT, 0715 UTC) on Saturday.

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.

The Starlink 6-63 mission falls on the fifth anniversary of Starlink v0.9, the first dedicated Starlink mission, on May 23, 2019. Liftoff Thursday is set for 10:13 p.m. EDT (0213 UTC).

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).