The origin of the human moon festival, what to commemorate?

1On July 20th, 969, the American Apollo spacecraft landed on the moon safely. A few hours later, astronaut Armstrong landed on the moo

The origin of the human moon festival, what to commemorate?

1On July 20th, 969, the American Apollo spacecraft landed on the moon safely. A few hours later, astronaut Armstrong landed on the moon, leaving human footprints on the moon for the first time. In order to commemorate the success of man's first landing on the moon, July 20 every year becomes "Man-Month Day".

Armstrong landed on the moon.

The landing site of Apollo 1 1 is in the south of Mare Trentiches, 20 kilometers southwest of Sabin D ring. The landing site was chosen because it is relatively flat (according to the information provided by Ranger 8, Surveyor 5 and lunar orbiter), so it will not cause much difficulty in landing and extravehicular activities. After landing, Armstrong called the landing site "Jinghai Base".

On July 20th 18: 1 1UTC, the lunar module with the call sign "Eagle" was separated from the command module with the call sign "Colombia". Collins stayed alone on the Columbia and carefully checked the eagle's rotation around the vertical axis to make sure everything was all right. After the inspection, Collins made a simple farewell gesture-"Take care"-and left. Collins' mission is to stay in the command module and fly around the moon. For the next 24 hours, he can only listen to the communication between the control center and the eagle and pray that the moon landing will be successful. If the eagle has an accident and can't take off from the moon (which is very likely), Collins will have to return to Earth alone.

Soon, Armstrong and Aldrin started the eagle propeller and began to descend. They soon realized that it was "flying over the head": when they landed on the moon, the alarm indicating that the computer was overloaded began to sound. The eagle flew four seconds longer on the descent trajectory, which means that the moon landing site will be several kilometers west of the plan. The navigation computer has several abnormal programs to alarm. At the Johnson Space Center in Houston, flight control commander Steve? Steve Bales is faced with a crucial and urgent choice-whether to terminate the moon landing program (which also means to terminate the entire flight plan, because there is only enough fuel on the plane for one attempt) or to order the astronauts to follow the plan and ignore the problems in the computer of the lunar module. Bells later admitted that he allowed Armstrong to try to land on the moon "by instinct".

After paying attention to the window again, Armstrong found that they were between a rock and a hard ground. Computer failure caused them to fly over the pre-selected landing zone, and the fuel would soon run out. At this point, Armstrong chose to manually control the lunar module. The lunar module kept descending, and the fuel began to run out-the lunar module was about 9 meters away from the surface of the moon, and the remaining fuel was only 30 seconds-Armstrong calmly found a suitable landing site on the surface of the moon covered with rubble and craters, and drove the lunar module to land on the moon smoothly. The exact landing time is July 20th, 0969 at 65438+4: 00pm (Houston time).

The significance of setting up human moon day;

Landing on the moon is the first step for human beings to explore outer space. As Armstrong said, this is one small step for individuals, but one giant step for mankind. Man's landing on the moon provides reference value for exploring moon resources and immigrating to Mars, which is of great significance to the history of human exploration of space.