Secret military aircraft of the US military in orbit 500 days

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

The X-37B unmanned aircraft circled the Earth for 500 days while the US military did not reveal any information about its mission or its return to the ground, International Business Times on October 11. reported.

The graphic simulates the X-37B aircraft flying around the Earth.(Photo: Boeing).

Taking off on May 20, 2015, the X-37B is the fourth aircraft to remain in the universe during the mission not to be disclosed to those outside the military project. ) of the US Air Force. The program has attracted a lot of attention since 2010 when the first OTV-controlled robot operated and traveled 224 days on Earth's orbit.

The X-37B is a solar-powered unmanned aerial aircraft operated by Boeing and has many similarities to the famous shuttle spacecraft of the US Aerospace Agency (NASA). The aircraft is 8.8m long and the wingspan is 4.6m.

Many theories and speculations are given about the plane's mission. In 2012, Dave Webb, president of the Global Network to Combat Weapons and Nuclear Energy in Space, affirmed that the X-37B falls within the "Pentagon's plan to develop attack capabilities at all." in the world in less than an hour ". However, the US military quickly dismissed the hypothesis and emphasized its purpose of using X-37B to explore re-space vehicle technology to serve long-term goals.

The X-37B plane has spent 500 days in orbit.(Photo: Reuters).

Another theory is that the X-37B is a spy plane or a means to destroy rival satellites. According to the latest hypothesis, the aircraft is testing a propulsion system.

Three planes launched in previous missions returned to Vandenberg Air Force Base in California, USA but the US military has not confirmed whether the fourth X-37B will land at this location.