Live coverage of Delta 4 countdown and launch

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).

Blue Origin, the rocket company owned by Amazon-founder Jeff Bezos, has won a $3.4 billion NASA contract to build an Artemis lunar lander that will provide a downstream alternative to the Starship variant already being developed by SpaceX, the agency announced Friday.

Millennium Space Systems, a Boeing subsidiary, built two small satellites awaiting launch Thursday night on a Rocket Lab Electron rocket on a mission to test the effectiveness of a drag-inducing device that could help remove spacecraft from orbit.