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Photos: Atlas 5 on the pad for X-37B launch
The United Launch Alliance Atlas 5 rocket stands poised for flight with the Air Force's X-37B spaceplane and a batch of CubeSats including the LightSail. The rocket was rolled to Complex 41 on Tuesday in preparation for launch on Wednesday.
Preview: X-37B spaceplane to journey back into space Wednesday
An experiment-carrying, reusable mini space shuttle operated by the U.S. Air Force will be boosted into Earth orbit Wednesday atop a United Launch Alliance Atlas 5 rocket.
Photos: X-37B gallery archive
This is a collection of images taken during the three previous flights of the U.S. Air Force's X-37B Orbital Test Vehicle mini space shuttle.
VideoVideos: Launch and landing archive of X-37B mini space shuttle
Relive the launches and landings of the Air Force's X-37B miniature space shuttle on Orbital Test Vehicle missions No.1, No. 2 and No. 3.
ULA, SpaceX face off in landmark Air Force launch competition
The U.S. Air Force has identified the launch of a next-generation GPS navigation satellite for the first in a series of competitive rocket procurements between United Launch Alliance and SpaceX, service officials announced Wednesday.
VideoVideo: X-37B payload mated to Atlas 5
Already encapsulated in the 18-foot-diameter nose cone, the Air Force's X-37B spaceplane is hoisted atop the Atlas 5 rocket at Cape Canaveral's Vertical Integration Facility.
Photos: Atlas 5 and X-37B mated together for upcoming launch
The Air Force's miniature space shuttle and its ride to orbit have been joined together inside an assembly building at Cape Canaveral in preparation for launch May 20.
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.