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.
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).
Astronauts Butch Wilmore and Suni Williams arrived at the Cape in T-38 jets, the first such arrival since the space shuttle era. The mission is aiming to launch on Monday, May 6, at 10:34 p.m. EDT (0234 UTC).
The rollout operation on Tuesday followed a day of evaluations using Boeing’s weight and center-of-gravity machine to determine the final measurements on the spacecraft. Launch is still targeting May 6 at 10:34 p.m. EDT (0234 UTC).
Assuming a May 1 launch, the Starliner spacecraft would dock with the ISS on May 2. The spacecraft will launch on the 100th flight of United Launch Alliance’s Atlas 5 rocket.
The quartet touched down at the Launch and Landing Facility around 1:45 p.m. EST (1845 UTC). They’re set to launch aboard a SpaceX Falcon 9 rocket on Friday, March 1, at 12:04 a.m.