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BY JUSTIN RAY

Follow the countdown and launch of the Boeing Delta 2 rocket with NASA's Deep Impact comet spacecraft. Reload this page for the very latest on the mission.

Spaceflight Now Plus
Additional coverage for subscribers:
VIDEO: DEEP IMPACT BLASTS OFF ATOP DELTA 2 ROCKET QT
VIDEO: LONGER-DURATION MOVIE OF TODAY'S LAUNCH QT
VIDEO: LAUNCH AS SEEN FROM THE CAPE PRESS SITE QT
VIDEO: WIDER-ANGLE LAUNCH VIEW FROM PRESS SITE QT
VIDEO: COCOA BEACH TRACKING CAMERA VIDEO OF LAUNCH QT
VIDEO: TRACKER POSITIONED NORTH OF THE LAUNCH PAD QT
VIDEO: PLAYALINDA BEACH TRACKING CAMERA VIEW QT
VIDEO: CLOSE-UP VIEW OF ENGINE IGNITION QT

VIDEO: MOBILE SERVICE TOWER ROLLED BACK BEFORE DAWN QT
VIDEO: NARRATION OF DEEP IMPACT'S PRE-LAUNCH CAMPAIGN QT
VIDEO: ON-PAD ASSEMBLY OF ROCKET SHOWN WITH NARRATION QT
VIDEO: TUESDAY'S PRE-LAUNCH NEWS UPDATE DIAL-UP | BROADBAND
VIDEO: SCIENCE BRIEFING ON EVE OF LAUNCH DIAL-UP | BROADBAND
VIDEO: OVERVIEW OF NASA'S DEEP IMPACT MISSION QT
VIDEO: LEAD RESEARCHER PREVIEWS DEEP IMPACT SCIENCE QT
VIDEO: WATCH DEEP IMPACT PRE-FLIGHT NEWS BRIEFING QT
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Read our earlier status center coverage.