Problems with rotating planets and moons? 100

Satellites do not fall.

There is no absolute space in the universe, but when considering absolute space, its frame of reference must be an inertial frame. Now if you look at it again, the satellite orbits the planet, is this system an inertial frame? No.

When there is only one planet in the universe, as long as it does not rotate, it does not matter, and the space in which the planet is located can be regarded as absolute space, because there are no other planets to compare its motion with.

But with a satellite next to it, and the moon orbiting the planet, the nature of space changes. At this point, you have references, and you can cross-reference.

In the case of a planetary satellite system, if the satellite does not move, it will fall to the planet under the gravitational pull of the planet. If the satellite revolves around the planet, the system is not an inertial frame, because the satellite is subjected to the planet's gravitational pull, which is equal to the centripetal force. In a circular motion around a planet, the direction of its motion changes from moment to time, it is not inertial motion, but accelerated motion, and at this time, it cannot be considered in terms of inertial frames.

Think of the moon as immobile and the planet as moving, and the result is the same. Even the calculation formula is the same, and the result is the same. I don't believe you.

This question does not concern whether the planets rotate or not. Whether the planets rotate or not is only related to the planets themselves, not to the moons. Because whether a planet rotates or not does not have an effect on the gravitational field around it, that is, it has nothing to do with the relative motion of the satellite to the planet (tidal forces affect the rotation, not the revolution).

Rotation itself generates centrifugal force.

If you use a satellite as a reference, then the planet will rotate faster relative to the satellite, resulting in a stronger centrifugal force.

If it is thought that the planets are rotating and the satellites are stationary, then with the planets as the reference, aren't the positions of the two relatively stationary, then doesn't it contradict the previous sentence?

Most often artificial satellites.

The direction of movement is related to the rotation of the Earth.

The direction is the same. Only a handful of them are the opposite.

What is an artificial satellite? The so-called artificial satellite actually refers to an unmanned spacecraft that takes the earth as the center and operates in an orbit in accordance with regulations.

Artificial satellites, like other spacecraft, orbit the earth in accordance with the laws of celestial mechanics, because they are in different orbits and may be subjected to the gravitational field from the earth.

and the resistance of the atmosphere, as well as from the gravitational pull of the Sun and the Moon.

The effect of gravity, the advantage will also be affected by the light pressure, because the structure of the artificial satellite is too complex, so in the actual situation, the situation of the movement in the orbit is naturally calm, and it is more complicated, our country in 1970 launched our country's first artificial satellite "Dongfanghong No. 1".

The Dongfanghong-1 satellite was launched at the most difficult time for the country, and the degree of hardship can be imagined. At that time, China's aerospace industry had just improved, and the smooth entry into space was already a tremendous effort made by the people at that time, because there had never been such an experiment. Therefore, the state attaches great importance to the scientific research program of artificial satellites, and the successful launch of Dongfanghong marks that China has made great progress in the cause of artificial satellites.

At the beginning, it was initially estimated that the working time was about 20 days, but in the actual work, it has exceeded expectations, and the working time may not be long after 28 days, but Dongfanghong 1 has completed a series of tasks such as the collection of telemetry data and other powerful value information. <>

To put it bluntly, Dongfanghong 1 is already space junk.

Although it is said that it is, the facts are in front of us, and we must admit it. To a certain extent, the level of artificial satellites reflects the maturity of a country's aerospace technology.

Rotation. Geostationary meteorological satellites are meteorological satellites operating in geosynchronous orbit over the equator, operating synchronously with the Earth's rotation and stationary relative to the Earth.

If a geostationary satellite is launched into the equatorial plane, and the time it takes for the satellite to make one revolution in orbit is exactly the same as the time of the Earth's rotation, then the satellite will always stay somewhere above the equator, and the satellite will be stationary in the air from the ground. When the orbital inclination of a geostationary satellite is 0, it becomes a geostationary satellite.

Advantages of geostationary meteorological satellites.

There are many advantages to the use of geostationary satellite technology in ocean observations:

1. Geostationary orbit satellites have a wide field of vision, and a remote sensing instrument can observe nearly 1 3 areas of the earth.

2. The attitude can be quickly adjusted at any time, and it is very convenient to rearrange the mission of the satellite, so the observation area can be adjusted at any time, and the area of interest can be captured and tracked in time.

3. Area scan cameras are mostly used to image the region of interest, so the quality of remote sensing images of cherry blossom lifting in the observation area can be improved by increasing the integration time and multiple accumulation.

4. It can continuously observe the area of interest, so it can continuously provide data and image support for various emergencies. For example, the visible light band can image the region of interest about 8 times a day, which is a great performance improvement and practical significance compared with the observation of polar-orbiting satellites once a day.

The moon also rotates, and the moon's roundness is caused by the moon's rotation, which is synchronized with the earth's rotation and faces the earth. We turn on the washing machine, and due to the dry rotation of the chassis, the water rotates around the center, and without the center rotation, the water cannot rotate. The rotation of the water droplet formed by this rotation is strikingly similar to the nucleus, the solar system, and the Milky Way.

Since they are all in collision motion, how can there be no rotation motion? Will the energy of the collision fly? A planet without rotation is like it has only centripetal force and no centrifugal force, just like a [small black hole], which is suddenly absorbed by a large planet and perishes.

With rotation, you can attract the surrounding dust and increase yourself, and at the same time, with rotation, you can resist the attraction and merger of large celestial bodies and make yourself orbit and live. The long-term evolution of cosmic celestial bodies, the law of the formation of silver hunger, the rotation of the center of the planet, the formation of the revolution of the asteroid, is the law of the planetary world, and the planet without rotation is short-lived and cannot exist. The rotation stopped, and the demise began.

The Earth is turning from the front.

Moon rotation results.

Solar system. <>

Galaxy.

Because after the big **, various stars produce angular momentum under the action of gravity, and the speed of rotation is accelerated. As a star system stabilizes, so does this rotation. Now that angular momentum and rotational forces have been formed in space, planets are autobiographical.

Because it is almost in a vacuum, there is no resistance, and if there are no external factors, this rotation will continue forever.

At a certain point in the development of the universe, in the formation of galaxies, stars, and planets, motion, especially rotation, accompanies the formation of stars and planets from beginning to end, rather than beginning to rotate or revolve later for some reason.

The universe is filled with a uniform cloud of neutral atomic gas, and the large volume gas cloud is caused by the initial energy of the universe when the rotation of its own planet and the later gravitational and repulsive forces of the universe, which will not be easily changed in the space without resistance.

The solar system is a very common star system among the hundreds of billions of stars in the Milky Way, and the solar system is also revolving around the center of the Milky Way, and it takes about 100 million years to rotate for a cycle. The Milky Way is one of the dozens of galaxies in the cluster, and it is also orbiting around the center of the cluster, about 100 billion years.

The primordial nebulae that formed the solar system originally had angular momentum, and after the formation of the solar and planetary systems, its angular momentum would not be lost, but it would inevitably be redistributed, and each star would get a certain amount of angular momentum from the primordial nebula in the long process of accumulating matter. Since angular momentum is conserved, the planets will also rotate faster and faster during contraction.

The earth is no exception, the angular momentum it obtains is mainly distributed in the rotation of the earth around the sun, the mutual rotation of the earth-moon system and the rotation of the earth, which is the origin of the earth's rotation, but to really analyze the orbital motion and rotation motion of the earth and other major planets still requires scientists to do a lot of research work.

That is to say, in the formation of the Earth, motion, especially rotation, accompanied the formation of the Earth from beginning to end, rather than the beginning of its rotation or revolution for some reason after the formation of the Earth.

The predecessor of the solar system was a dense cloud, driven by a certain force that attracted each other, and this accretion process made the density gradually larger, which accelerated the accretion process. On the one hand, the centripetal accretion accumulation becomes the sun, and on the other hand, the gas gradually develops into a flattened shape, and in the process of development, the potential energy becomes kinetic energy, and finally the whole thing turns.

At the beginning of the rotation, there are those who turn this way, and those who turn that way, after a certain direction prevails, they all become one direction, and this direction is the right-hand rule that is now discovered, and there may be other solar systems that are left-handed rules, but in our solar system it is the right-hand rule. The energy of the earth's rotation** is caused by the eventual transformation of material potential energy into kinetic energy, which ultimately means that the earth rotates on the one hand and rotates on the other.

I think the inevitable consequence of the formation of this planet....The formation of planets is the formation of matter in the universe by constantly rotating and attracting together...So, at first, it was fast to spin and then gradually slower.

There is no absolutely stationary object in the universe, and a massive celestial body subjected to various external forces must rely on rotation to maintain its balance in order to maintain its own motion.

For example, if you don't move, you are deliberately rebelling against this movement, which is not the case with celestial bodies in the universe, which can only be maintained by rotation.

There is an initial momentum. Produced during the formation process.