x-37b aircraft

The Pentagon for the first time reveals quite a number of upcoming missions of the spacecraft that have performed top secret missions in the universe.

The most mysterious spacecraft of the US Air Force set a new record for the longest time in orbit in the fifth mission.

The US Air Force X-37B has just completed Saturday in orbit, making it the longest mission-carrying ship in a secret test program.

The US X-37B space plane landed 500 days on Earth's orbit but no one knew its secret mission.