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.