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Why do astronauts walking on the moon seem to be floating?
Due to the size ratio of the moon relative to the earth, its diameter is slightly larger than a quarter of that of the earth, and its mass is 7.3477 × 1022 kg, which is 0.0 123 times and about 1/8 1 of the earth's mass, and its surface gravity is1. The same force can walk normally on the earth, but it will appear a little floating on the moon. However, due to the limitation of the space suit pressurization system, the astronauts in those days were more like taking small steps. You can jump far with a random jump, and it is no exaggeration to float. This is not right. Walking on the moon, people basically fall to the ground step by step.

Gravity tells us that as long as there are objects with mass, there is gravity between them. The moon is much shorter than the earth's time, but it is also a massive celestial body. When people land on the surface of the moon, they are so close to the center of gravity of the moon. According to F=GmM/r? When people are on the surface of the moon, gravity is the greatest. Because the moon rotates slowly, the difference between gravity and gravity is relatively smaller than that on the earth, but it is enough for people to stand on the surface of the moon. But the mass of the moon is only a fraction of that of the earth, and its gravity is naturally much smaller.

American astronauts who landed on the moon in those days wore spacesuits weighing more than 100 kilograms on the moon, and their joints needed to be thickened, making it difficult to move. They could only take small steps and easily fall down. If you don't need to wear a spacesuit on the moon, that person can "fly" with the intensity of normal walking and movement, and can easily jump over a wall 5 meters high. Even if he falls, the acceleration of free fall is relatively slow, which is equivalent to falling from a height of more than one meter, which will hurt, but it is generally not a big problem.

The moon and Mars have less gravity and are also ideal places for scientists to establish bases. Because of the small gravity, it is more conducive to human space launch. According to the current space plans of various countries, it is still possible to build a lunar base in this century.