This article contains information regarding a rocket or spacecraft that अभिव्यक्ति त्रुटि: अज्ञात विराम चिन्ह चरित्र "२"।.
Details may change as the countdown and ascent progress. Launch details: United Launch Alliance used an Atlas V 501 to launch X-37B OTV-2, a military spaceplane for the US Air Force. Launch occurred from SLC-41 at Cape Canaveral. This is the third launch of the Atlas V 501 configuration, and the second flight of the X-37B. • Live countdown clock • Webcast
Launch was scheduled for 5 मार्च 2011 at 21:09 UTC (4:09 pm EST). See 2011 in spaceflight and the Spaceflight Portal for further details.