The Apollo 11 astronaut revealed an unpublished photo

Although Collins was not allowed to set foot on the surface of the Moon, he did 266 hours of space work, on two NASA mission missions with subsequent missions.

The picture was discovered at the bottom of a box showing three astronauts Collins, Neil Armstrong and Buzz Aldrin next to a Moon model.

The photo was discovered by Michael Collins about Apollo 11 astronauts.

Apollo 11 astronaut shared his personal Twitter image to relive this forgotten . photo. Because of the upcoming July 20, 2019, Apollo 11 will mark the 50th anniversary of the mission.

At the historic moment 50 years ago (July 20, 1969), the astronaut Collins who was in the command module of Columbia, accompanied Armstrong and Aldrin - of the crew, set foot on the surface of the Moon.

Reportedly, the Smithsonian National Air and Space Museum is exhibiting a series of beautiful artifacts to celebrate the 50th anniversary of the Apollo 11 landing on the Moon. And on July 16, this museum will also show more about Neil Armstrong's space suit.

Collins - an American Air Force fighter pilot joined NASA in 1963. In addition to joining Apollo 11, he also operated the Gemini 10 in 1966, before attending the Apollo 11 event.

Although Collins was not allowed to set foot on the surface of the Moon, he did 266 hours of space work, on two NASA mission missions with subsequent missions.

It is known that 12 people have set foot on the Moon, of which Neil Armstrong and Buzz Aldrin are two of the first three people to step up to Earth's "natural satellite" .