A Delta 2 rocket launches from Cape Canaveral's pad 17B at 8:20 a.m. EDT carrying two experimental missile-tracking satellites to test advanced technologies for the nation's defense against enemy attacks. The tandem demonstration satellites are part of the Space Tracking and Surveillance System, a $1.5 billion project known as STSS Demo.

Photo credit: NASA-KSC

Credit: NASA-KSC

Additional coverage for subscribers:
VIDEO: THE FULL LAUNCH EXPERIENCE PLAY
VIDEO: DELTA 2 ROCKET LAUNCHES STSS DEMO PLAY | HI-DEF
VIDEO: STSS DEMO SATELLITES DEPLOYED PLAY
VIDEO: POST-LAUNCH BRIEFING WITH NASA AND MDA PLAY

VIDEO: LAUNCH REPLAYS: CAPE CANAVERAL BEACH PLAY | HI-DEF
VIDEO: LAUNCH REPLAYS: WIDE VIEW FROM PRESS SITE PLAY | HI-DEF
VIDEO: LAUNCH REPLAYS: TIGHT SHOT FROM PRESS SITE PLAY | HI-DEF
VIDEO: LAUNCH REPLAYS: KSC DOAMS TRACKER PLAY | HI-DEF
VIDEO: LAUNCH REPLAYS: UCS 23 TRACKER PLAY | HI-DEF
VIDEO: LAUNCH REPLAYS: PAD CAMERA NORTHEAST PLAY
VIDEO: LAUNCH REPLAYS: PAD CAMERA SOUTHWEST PLAY
VIDEO: LAUNCH REPLAYS: PAD CAMERA WEST PLAY

VIDEO: NARRATED REVIEW OF STSS DEMO PREPS PLAY | HI-DEF
VIDEO: NARRATED REVIEW OF DELTA 2'S PREPARATIONS PLAY | HI-DEF
VIDEO: PAD TOWER ROLLS BACK AROUND DELTA 2 AFTER SCRUB PLAY
SUBSCRIBE NOW