Live coverage: Delta 4 countdown and launch journal

The third Space Base Infrared Systems Geosynchronous Earth Orbit, or SBIRS GEO Flight 3, was hoisted atop the Atlas 5 on Jan.12 to complete the pre-flight assembly of the 189-foot-tall rocket for launch.

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.

A replay of the United Launch Alliance Atlas 5 rocket launching the Navy’s Mobile User Objective System communications satellite No. 4 from Cape Canaveral, Florida.