In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. These are the suits of Neil Armstrong and Michael Collins during the Apollo 11 moon landing in July 20, 1969. (Xinhua photo)

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows the toothbrush, shaver, dentifrice used by Michael Collins during Apollo 11 moon landing in July 20, 1969. (Xinhua photo)

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows the sunglasses weared by Astronaut during the Apollo 11 moon landing in July 20, 1969. (Xinhua photo)

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows the partition suit weared by astronaut Edwin Aldrin on the way back to the Earth. (Xinhua photo)

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows the model of Saturn 5 which sent Apollo 11 to the moon. (Xinhua photo)

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows some visitors watching simulation scene of the Apollo 11 moon landing in July 20, 1969. (Xinhua photo)

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows the Command Module of apollo 11. (Xinhua Photo)

This is the stamp issued in 1994 in order to commemorate the Apollo 11 moon landing in July 20, 1969.

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows apollo 11.

During the Apollo 11 moon landing in July 20, 1969, astronauts collected a lot of samples of moon rocks, earth.

In celebrating Apollo 11 35th Anniversary, an exhibition is held in National Air and Space Museum, July 19, Washington. The picture shows the Lunar Module of apollo 11.

After launch on July 16, 1969, the spacecraft was inserted into lunar orbit about 76 hours into the mission. After a rest period, Armstrong and Aldrin entered the Lunar Module preparing for descent to the lunar surface. The two spacecraft were undocked at about 100 hours, when the Command and Service Modules separated from the Lunar Module. The spacecraft landed in the Sea of Tranquillity at 4:18 p.m. EDT.

A close-up view of an astronaut's foot and foot print in the lunar soil, photographed with a 70mm lunar surface camera during the Apollo 11 lunar surface extravehicular activity (EVA).

Astronaut Neil Armstrong, the U.S flag, the lunar module, and a television camera are reflected in the face mask of astronaut Edwin Aldrin on the moon during the Apollo 11 moon landing in July 20, 1969.

Apollo 11 astronauts Neil Armstrong and Edwin E. Aldrin, the first men to land on the moon, plant the U.S. flag on the lunar surface, July 20, 1969.

Astronaut Neil Armstrong, the U.S flag, the lunar module, and a television camera are reflected in the face mask of astronaut Edwin Aldrin on the moon during the Apollo 11 moon landing in July 20, 1969.

Image of the Earth in the outer space.

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