Surveillance Suspected as Spacecraft’s Main Role - NYTimes.com
The spaceship, known as the X-37B, was shrouded in operational secrecy.
http://www.nytimes.com/2010/05/23/science/space/23secret.html
Secrets Of The X-37B Unveiled By Amateur Sky Watchers - redOrbit
"A group of amateur sky watchers has cracked the case of the secrecy surrounding the debut flight of the nation's first robotic spaceplane, discovering that the military craft is engaged in the development of spy satellites rather than space weapons, reveals a report by the New York Times. "
http://www.redorbit.com/news/space/1869518/secrets_of_the_x37b_unveiled_by_amateur_sky_watchers/index.html
Amateur Astronomers Spy on Air Force's Secret Mini Space Plane | Universe Today
http://www.universetoday.com/2010/05/25/amateur-astronomers-spy-on-air-forces-secret-mini-space-plane/
What is the Air Force's Secret X-37B Space Plane Doing in Orbit? | Universe Today
http://www.universetoday.com/2010/05/19/what-is-the-air-forces-secret-x-37b-space-plane-doing-in-orbit/
同記事
What is the Air Force's Secret X-37B Space Plane Doing in Orbit? | International Space Fellowship
http://spacefellowship.com/news/art20294/what-is-the-air-force-s-secret-x-37b-space-plane-doing-in-orbit-.html
What is the Air Force doing with space? | Bad Astronomy | Discover Magazine
http://blogs.discovermagazine.com/badastronomy/2010/05/24/what-is-the-air-force-doing-with-space/
