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Photos: Gantry retracted from Delta 4 rocket
The 330-foot tall mobile service tower is rolled away from the United Launch Alliance Delta 4 rocket at Cape Canaveral’s pad 37B in the hours before the scheduled liftoff on Aug. 19.
VideoLive coverage: Tonight’s Delta 4 countdown and launch journal
A pair of Air Force surveillance satellites headed to geosynchronous orbit today to reconnoiter the high ground, departing Cape Canaveral aboard a United Launch Alliance Delta 4 rocket at 12:52 a.m. EDT (0452 GMT). It is the 375th Delta rocket flight since 1960.

Preview: Two space informants to be launched to geosynchronous orbit
The Air Force will launch a second pair of small security probes 22,300 miles above the Earth using a Delta 4 rocket on Friday to alert ground controllers of impending space collisions and monitor potential meddling with U.S. orbiting assets.

Timeline: Delta 4/GSSAP launch events
Follow the unclassified portion of the Delta 4 rocket's ascent to space from Cape Canaveral's Complex 37 launch pad with the U.S. Air Force's two Geosynchronous Space Situational Awareness Program, or GSSAP, satellites.

Weather outlook good for Friday’s early morning Delta 4 launch
Air Force meteorologists are giving favorable weather odds for the Delta 4 rocket to launch a pair of space surveillance satellites early Friday morning from Cape Canaveral.

Video: Gantry swing arm arrives at Atlas 5 pad for astronauts to board Starliners
Constructing the launch pad infrastructure for astronauts to board Boeing's Starliner crew capsules atop United Launch Alliance Atlas 5 rockets, workers delivered the Crew Access Arm with its White Room to Cape Canaveral's Complex 41 on Thursday, Aug. 11.

Photos: Solar arrays attached to asteroid-bound OSIRIS-REx spacecraft
At NASA's Kennedy Space Center, workers have finished the pre-launch assembly and fueling of OSIRIS-REx for the asteroid sample return spacecraft for liftoff Sept. 8.
VideoPhotos and video: Payload hoisted atop Delta 4 for upcoming launch
The two Geosynchronous Space Situational Awareness Program, or GSSAP, satellites for the U.S. military are mounted aboard the United Launch Alliance Delta 4 rocket. Liftoff is planned for Aug. 19 from Cape Canaveral.

Air Force satellite duo mated to Delta 4 rocket for next week’s launch
Two space informants to track objects in geosynchronous orbit have been mounted atop their Delta 4 launch vehicle for liftoff Aug. 19.

Buildup of unusual launcher begins for NASA’s asteroid sample return mission
It is a rocket like no other, a vehicle with a single solid-fuel booster mounted to its side, that will launch NASA's OSIRIS-REx probe next month to bring back a sample of Asteroid Bennu.