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NASA gives more information on its experiment aboard the X-37B
In addition to carrying an Air Force electric propulsion thruster test, a materials research investigation sponsored by NASA's Marshall Space Flight Center will be flying aboard the X-37B miniature spaceplane later this month.

New details emerge about electric propulsion experiment aboard X-37B
All systems are now "go" for launch of the Air Force's X-37B mystery spaceplane on May 20 from Cape Canaveral aboard an Atlas 5 rocket.

Fourth X-37B flight a month away from launching
The U.S. Air Force on Friday made its first public confirmation that the X-37B unmanned space shuttle will be launched next month on the fourth flight of an Orbital Test Vehicle.

Stats: Atlas 5 and Delta 4 histories and backlogs (updated April 20)
Here's a look by the numbers of the previous Atlas 5 and Delta 4 flight histories and the manifests for both rockets.

ULA sees clean handover of Boeing crew launches to Vulcan rocket
United Launch Alliance vows a "seamless" switch from the Atlas 5 to the new Vulcan rocket in launches of Boeing's astronaut taxis.

Atlas 5 slips at payload’s request
The next Atlas 5 rocket launch from Cape Canaveral will be delayed two weeks to resolve an undisclosed issue with the payload, United Launch Alliance officials announced Friday.

ULA working to reduce five launch pads to two
The nation's existing Atlas and Delta launch sites are vying for a future when United Launch Alliance completes its modernization with a new rocket system and downsizing to one pad on each coast.

Same day rollouts and launches could return to Atlas 5 program
Returning to the days of rollouts and launches in a span of only a few hours, the United Launch Alliance Atlas 5 program is looking to resume this whirlwind experience.

Mysterious mini spaceplane the next Atlas 5 payload
With its new homeport in renovated NASA space shuttle hangars off in the distance, the Air Force's X-37 mini spaceplane will be launched from Cape Canaveral on May 6 for its fourth journey into orbit.

Stats: Atlas 5 history and backlog
Here's a look by the numbers of the previous Atlas 5 flight history and the current backlog and manifest for the rocket.