How do the sun, the moon, the earth and some other stars move in the universe?

The Sun is located on the spiral arms of Orion north of the galactic plane, about 26,000 light-years from the center of the Milky Way and about 26 light-years north of the galactic plane, and on the one hand, it rotates around the galactic center at a speed of 250 kilometers per second (with a period of about 100 million years), and on the other hand, it moves at a speed of kilometers per second relative to the surrounding stars in the direction of Vega.

The Moon orbits around its common center of mass with the Earth (1,000 km from the center of the Earth).

Other stars in the universe are moving away from us (the universe is expanding), but the Andromeda galaxy is close to our Milky Way, and after a billion years it collides with the Milky Way, or it may cross.

The Great Small Magellanic Galaxy once crossed the Milky Way.

In addition to their rotation, these stars also orbit around the higher-level stars. For example, the Moon revolves around the Earth, the Earth revolves around the Sun, and the Sun leads the solar system around the Milky Way. Further up, galaxies are clustered together, and the universe as a whole is expanding.

Of course, there will also be some free stars in the universe, perhaps too far away from the massive objects to be captured.

You've studied physics, but what about your references?

At present, we don't know much about the universe, so how can we analyze their state of motion?

The moon revolves around the earth, and the earth revolves around the sun.

The Sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.

The earth is a planet in the solar system, the sun is the main star of the earth, and the earth revolves around the sun, and one rotation is 1 year in the solar calendar.

The Moon is a satellite of the Earth, and the Moon is also the most massive satellite known to the Earth, forming a celestial system - the Earth-Moon System, and the Moon revolves around the Earth for a lunar month. The average distance between the Moon and the Earth is about 380,000 kilometers, which is about 30 times the diameter of the Earth.

The moon moves between the sun and the earth, and if the three are exactly in a straight line, the moon will block the sun's light from the earth, and the dark shadow behind the moon will fall on the earth, and a solar eclipse will occur.

In folklore, this phenomenon is called the Tengu Eclipse Day. Solar eclipses only occur at the New Year, when the Moon and the Sun are conjunct. Solar eclipses are divided into partial solar eclipses, total solar eclipses, annular solar eclipses, and total annular eclipses.

You can't look directly at the sun when observing a solar eclipse, otherwise it will cause temporary blindness, and in severe cases, permanent blindness.

Do the stars move?

Stars are constantly moving, moving in different directions and speeds. We can decompose the velocity of a star relative to the solar system into two sub-velocities according to the vector decomposition method: one is along the direction of the observer's line of sight, which cannot be directly observed, and must be measured by another method.

The other fractional velocity is the tangential velocity perpendicular to the direction of the observer's gaze (or the self-velocity) of the star, which is not easily perceptible to the naked eye because the star is so far away. However, if you observe the change of a star's position relative to the background star precisely and over a long period of time, you can determine the magnitude and direction of its tangential velocity. The change in the shape of the Big Dipper 100,000 years ago and 100,000 years later is the result of the long-term accumulation of the different tangential velocity directions and sizes of these seven stars.

Summary. Hello, the Sun, the Moon, and the Earth move in the following way: 1. On the one hand, the Sun rotates around the center of the Milky Way at a speed of 250 kilometers per second, with a period of about 250 million years, and on the other hand, it moves at a speed of 19.7 kilometers per second relative to the surrounding stars in the direction near Vega.

At the same time, the sun is also rotating, and its cycle is about 25 days in the equatorial zone of the sun; The polar region is about thirty-five days. 2. The Moon orbits the Earth in an elliptical orbit. At the same time, it rotates at the same time, with a period of about 27.32166 days, which happens to be a sidereal month.

3. The earth revolves around the sun, and its orbit is in the shape of an elliptical orbit that is nearly perfectly circled, with a period of about 365.25 days; At the same time, it rotates around the Earth's axis with a period of about 23 hours, 56 minutes and 4 seconds, and this time is called the sidereal day.

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Hello, the Sun, the Moon, and the Earth move in the following way: 1. On the one hand, the Sun rotates around the center of the Milky Way at a speed of 200 trillion and 50 kilometers per second, with a period of about 250 million years, and on the other hand, it moves at a speed of 19.7 kilometers per second relative to the surrounding stars in the direction of Vega. At the same time, the sun is also rotating, and its cycle is about 25 days in the equatorial zone of the sun; The polar zone is about 35 days.

2. The Moon orbits the Earth in an elliptical orbit. At the same time, it rotates at the same time, with a period of about 27.32166 days, which happens to be a sidereal month. 3. The earth revolves around the sun, and its orbit is in the shape of an elliptical orbit that is nearly perfectly circular, with a period of about 365.25 days. At the same time, it rotates around the Earth's axis with a period of about 23 hours, 56 minutes and 4 seconds, and this time is called the sidereal day.

The Moon is a natural satellite orbiting the Earth and is the only celestial body that orbits the Earth. The Earth and the Moon form a celestial system called the Earth-Moon system. In the Earth-Moon system, the Earth is the central celestial body, so the movement of the Earth-Moon system is generally described as the orbital motion of the Moon towards the Earth.

The average distance between the Moon and the Earth is about 384,400 km. The Moon's orbit around the Earth is an elliptical orbit, with an average distance of 363,300 kilometers at its perigee, i.e., at its closest to the Earth, and an average distance of 405,500 kilometers at its apogee, i.e., at its farthest point from the Earth, a difference of 42,200 kilometers.

The time of formation of the Moon, the origin of any planet in the Earth-Moon system, is closely related to each other

Unlike many other planets in the solar system that have multiple moons, our earth has only one natural satellite, the moon, and the direction of the earth's rotation is also highly consistent with the direction of the moon's rotation. Although the diameter of the Moon is about a quarter of the diameter of the Earth, and its mass is less than one-tenth of the Earth's mass, the Earth-Moon system has certainly maintained such an operation for billions of years.