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 A Boeing Delta II lifts of SLC 2 from Vanedenberg Air Force Base on Tuesday morning.  The payload is the Gravity Probe B.  The Gravity Probe B will test two predictions of Albert Einstein's general theory of relativity.  Photo by Thom Baur. (AP Wide World out, no resales)     Gravity Probe B Launches from Vandenberg AFB. California April 20, 2004 @ 9:57:24 a.m.  Gravity Probe B Launches from Vandenberg AFB. California April 20, 2004 @ 9:57:24 a.m. PST  Gravity Probe B Launches from Vandenberg AFB. California April 20, 2004 @ 9:57:24 a.m. PST  Gravity Probe B Launches from Vandenberg AFB. California April 20, 2004 @ 9:57:24 a.m. PST  Gravity Probe B Launches from Vandenberg AFB. California April 20, 2004 @ 9:57:24 a.m.  Gravity Probe B Launches from Vandenberg AFB. California April 20, 2004 @ 9:57:24 a.m. PST  Gravity Probe B on SLC-2 shortly before it launches from Vandenberg AFB. California April 20, 2004 @ 9:57:24 a.m. PST   OLYMPUS DIGITAL CAMERA  (Stanford University/J. Burns)   The mobile service tower is moved back around the Delta 2 rocket during the 24-hour postponement on April 19. Credit: William G. Hartenstein    Launch photo gallery
SPACEFLIGHT NOW
Posted: April 20, 2004


The smoke from launch hangs over the pad in this image taken at T+plus 55 seconds. Credit: William G. Hartenstein