BY JUSTIN RAY

Follow the countdown and launch of the Boeing Delta 2 rocket with NASA's Mars Exploration Rover-B. Reload this page for the very latest on the mission.

Video coverage for subscribers only:
   VIDEO: 5-MINUTE MOVIE OF DELTA LAUNCHING OPPORTUNITY QT
   VIDEO: ONBOARD CAMERA THROUGH FIRST STAGE CUTOFF QT
   VIDEO: CAPE CANAVERAL PRESS SITE REPLAY QT
   VIDEO: TRACKING CAMERA VIEW FROM PATRICK AFB QT
   VIDEO: POWERFUL TRACKER FOLLOWS THE ROCKET QT
   VIDEO: VIEW FROM THE SKID STRIP RUNWAY QT
   VIDEO: LAUNCH MANAGER RECAPS COUNTDOWN AND ASCENT QT
   VIDEO: STATUS OF OPPORTUNITY ANNOUNCED AFTER LAUNCH QT
   VIDEO: MONDAY'S ROLLBACK OF MOBILE SERVICE TOWER QT
   PHOTOS: 8-PICTURE GALLERY FROM ONBOARD CAMERA OPEN

   VIDEO: TIME-LAPSE VIEW OF MOBILE SERVICE TOWER ROLLBACK QT
   VIDEO: NARRATED MOVIE SHOWS 'OPPORTUNITY' LAUNCH PREPS QT
   VIDEO: FOOTAGE OF DELTA 2 ROCKET BEING STACKED QT
   VIDEO: ONBOARD CAMERA VIEW OF MER-A "SPIRIT" LAUNCH QT
   PHOTOS: 19-PICTURE GALLERY FROM "SPIRIT" ONBOARD CAMERA OPEN
   FULL VIDEO COLLECTION
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Read our earlier Mission Status Center coverage.