U.S. Air Force X-37B

Air force launches US military's first spaceplane
http://www.flightglobal.com/articles/2010/04/23/341061/air-force-launches-us-militarys-first-spaceplane.html

U.S. Air Force X-37B Launched

http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=defense&id=news/awx/2010/04/22/awx_04_22_2010_p0-222025.xml

El avión espacial Boeing X-37B despegó anoche... y no se sabe cuando aterrizará
http://es.engadget.com/2010/04/23/el-avion-espacial-boeing-x-37b-despego-anoche-y-no-se-sabe-cu

X-37B Orbital Test Vehicle Off On Mission Of Unknown Duration
http://www.aero-news.net/news/military.cfm?ContentBlockID=4df63aef-8e1b-463b-980c-97c32a5a072d&Dynamic=1

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