Spaceflight Now Home



The Mission




Rocket: Delta 2 (7920)
Payload: Gravity Probe-B
Date: April 20, 2004
Time: 1657:24 GMT (12:57:24 p.m. EDT)
Site: SLC-2W, Vandenberg Air Force Base, California
Satellite feed: AMC 9, Transponder 9, C-band

Mission Status Center



NewsAlert



Sign up for our NewsAlert service and have the latest news in astronomy and space e-mailed direct to your desktop.

Enter your e-mail address:

Privacy note: your e-mail address will not be used for any other purpose.



Gravity Probe-B video coverage
Posted: April 20, 2004

This collection of movies follows the preparations and launch of NASA's Gravity Probe-B aboard a Boeing Delta 2 rocket from Vandenberg Air Force Base, California. The following video clips are available to Spaceflight Now Plus subscribers. Find out how to get your subscription.

Launch day
Liftoff!
The Boeing Delta 2 rocket launches with NASA's Gravity Probe-B spacecraft from Vandenberg Air Force Base, California. (4min 16sec file)
  PLAY

Umbilicals
Umbilicals connecting the Delta rocket to the launch pad yank away as the vehicle lifts off. (175sec file)
  PLAY

     
Tower view
Liftoff as seen from a camera mounted on the mobile service tower next to the Delta 2 rocket. (26sec file)
  PLAY

Back side
A camera positioned on the back side of the Space Launch Complex-2 West provides this angle of liftoff. (19sec file)
  PLAY

     
Separation!
The Gravity Probe-B spacecraft is successfully deployed from the Delta rocket as seen by an onboard video camera. (2min 20sec file)
  PLAY

Post-launch chat
An interview with NASA launch manager Chuck Dovale following the successful deployment of Gravity Probe-B. (2min 20sec file)
  PLAY

     
First launch attempt
Tower rollback
The mobile service tower is rolled away from the Delta 2 rocket during the first launch attempt for Gravity Probe-B. (1min 33sec file)
  PLAY

Scrub called
Launch of the Delta 2 rocket with Gravity Probe-B is scrubbed with just minutes left in the countdown when time ran out to verify the upper level wind data had been properly loaded into the vehicle. (3min 05sec file)
  PLAY

     
Rocket pre-flight processing
First stage
The Boeing Delta 2 rocket's first stage is erected on the Space Launch Complex-2 West pad for the Gravity Probe-B mission. (5min 38sec file)
  PLAY

Interstage
The barrel-shaped interstage that links the Delta 2 rocket's first and second stages is lifted into the launch pad tower. (1min 02sec file)
  PLAY

     
Second stage
The second stage for the Delta 2 rocket arrives at the launch pad and is hoisted into position atop the interstage. (4min 55sec file)
  PLAY


     
GP-B pre-flight processing
VAFB arrival
The Gravity Probe-B spacecraft arrives at Vandenberg Air Force Base in July to begins its launch campaign. (2min 34sec file)
  PLAY

Unloading
Workers carefully unload Gravity Probe-B from its transportation trailer. (47sec file)
  PLAY

     
Moving to workstand
Gravity Probe-B is positioned upright on a workstand to begin testing and final assembly for its long-awaited launch. (4min 27sec file)
  PLAY

GP-B testing
Technicians conduct initial testing on Gravity Probe-B at Vandenberg Air Force Base. (1min 58sec file)
  PLAY

     
News conferences
Mission preview
Scientists and mission officials preview the Gravity Probe-B project in this pre-flight news briefing from Friday, April 2. (62min 25sec file)
  PLAY

Pre-launch briefing
Officials hold the Gravity Probe-B pre-launch news conference at Vandenberg Air Force Base the day prior to the scheduled liftoff. (24min 46sec file)
  PLAY

     
Science briefing
Scientists brief reporters on the goals for Gravity Probe-B spacecraft's experiment to test aspects of Einstein's general theory of relativity. (26min 37sec file)
  PLAY