What is the Mission?
“Few details have been revealed about the mission, which is a semi-secret test flight. As this author has suggested for years, there are really two missions going on at once. The first mission is a test of the X-37B vehicle and the components used to make it. This is all about testing new technology that will find their way into future re-useable spacecraft.
The second mission concerns some unidentified objects in the spacecraft’s small payload bay. This writer believes that these are satellite parts undergoing endurance testing for America’s National Reconnaissance Office, the shadowy organization behind America’s spy satellites.”
Space Travel Exploration and Tourism http://www.space-travel.com/reports/Birthday_Cake_for_X_37B_999.html