* Astronomy

The secretive X-37B robotic space plane is about to set its own space-endurance record on a hush-hush project operated by the U.S. Air Force Rapid Capabilities Office.
The craft, also known as the Orbital Test Vehicle-2, was boosted into Earth orbit atop an Atlas 5 rocket from Cape Canaveral, Fla., on March 5. Tomorrow (Nov. 30), the X-37B spacecraft will mark its 270th day of flight - a lifetime in space that was heralded in the past as the vehicle's upper limit for spaceflight by project officials.
Source

Experimental test vehicle
Height: 2.9 meters
Length: 8.9 meters
Wingspan: 4.5 meters
Launch Weight: 4,990 kilograms
Power: Gallium Arsenide Solar Cells with lithium-Ion batteries