How can a planet not fall in the universe?

Because there is gravitational attraction between the planets. Gravitational forces provide the centripetal force that allows the planets to move in a circle around a central body (the orbit is elliptical) so that the two planets do not fit together.

For example, the Earth revolves around the Sun, which is on a cantilever in the Milky Way, revolving around some other star.

For example, if you turn a rope with a stone tied to the other end, the stone will not fall.

Since the word "fall" is used, there is a distinction between "up and down". How is "up and down" determined in the universe? On our earth, "downward" refers to the direction in which our position points to the center of mass of the earth, and so on, in the universe "downward" means to the center of the universe.

According to the most advanced scientific observation of human beings, the universe is still in the big **, all galaxies, including the planets, are getting farther and farther away from the center of the universe, in this regard, the state of motion of the earth in the universe is the opposite of "down" "up", if the law of gravitation will not make mistakes until 8 sleeps, then the earth will always go up in the universe! Our human hearts have an eternal resonance with the earth here, and there is also a nice name--- cosmology.

The universe is buoyant -,-

If it is on the earth, it will definitely fall, if you don't believe it, you can go to the universe and try it yourself to see if you can fall down.

Because they are doing something like circular motion, gravity provides the centripetal force. Besides, if they fall, will you still be alive?

Because of the action of gravity.

Friend, which direction does the fall refer to? The universe is all relative, and when you say so, you are using the earth as a reference.

Why did it fall off? The planet, like the Earth, is equal.

In my opinion, we will never see the process of him falling to **, because it may be endless, of course, this is all extrapolated from the current knowledge, but I think everything is possible, because the fundamental laws of the universe are universality and infinity, except for the mutual gravity between stars and planets, there is no gravity to make it fall, space is vacuum, and it will not **, and secondly, he does not go up and down, for such a question, what can you think of, the universe is external, and what is the external of the universe.

The Earth revolves around the Sun at high speed and is now moving in orbit in the third layer. In about 1.2 billion years, it will enter the first orbital layer. In about 600 million years, it will enter the belly of the Sun.

How did the Earth fall into the universe? Note that any object moving at high speed will not fall, it will only be captured by other galaxies or swallowed by large objects. In addition, there is no talk of falling or hanging in the universe, our universe does not have a ground where all the planets fall like the Earth, everything is in balance of motion.

This is formed after a long time, starting from the big **, everything is moving towards the equilibrium of motion, however, in some places, such as the solar system, our earth does fall towards the sun all the time, and there is a tendency to fall, but this trend does not mean that the earth will definitely fall on the sun, the theory is that as long as the sun has a gravitational effect on the earth, the earth will fall on the sun, but because of its speed.

The earth will not fall to the earth, and the reason why some people have doubts is mainly due to the limitations of our lives, because when we open our eyes every day, we see a lot of things falling to the ground, so that when we form a fixed mind, everything will fall, if the feet are underneath, there will be an illusion of the brain, if the feet are underneath, there will be the illusion of the brain, if you are in space, you will not feel something underneath.

Regarding the question of if the planets will fall, then they will eventually fall to **, which is explained here today.

in the universe. Because the universe is infinite, if the planets all fall, then they will end up in the universe.

I think the universe is a space that expands to the four sides, because there is no force to attract, so it will not fall, so don't think too much.

If the planet were to fall, I think it would definitely be said to fall into a black hole, wandering endlessly in a black hole; But there is no gravity in outer space, and the planet will not fall, but will only be absorbed by the black hole.

Why do planets float in space and don't fall If they fall, they fall to **.

Before the advent of classical mechanics, people also had such problems with the movement of celestial bodies in the sky. At that time prevailed geocentrism said that the earth