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The Moon, commonly known as the Moon, also known as Taiyin and Xuantu in ancient times, is the only natural satellite of the Earth and the fifth largest satellite in the solar system. With a quarter the diameter and eightieth the mass of the Earth, the Moon is the most massive moon relative to the planets it orbits and the second densest moon in the solar system, after Europa. The surface of the moon is covered with craters formed by meteorite impacts and volcanoes.
The Moon is now about 30 times the diameter of the Earth.
The Moon may have been formed about 50-7.5 billion years ago, or shortly after the appearance of the Earth, and there are several hypotheses about its origin, the most common being that it was formed by debris from a huge impact between the Earth and Theia, a Mars-sized celestial body.
The front of the moon is marked by a dark sea of volcanic lava, interspersed with bright ancient highlands and conspicuous craters. It is the brightest object in the sky other than the Sun, and its reflectivity is only slightly higher than that of old asphalt. Because the moon is very visible in the sky, coupled with the regular changes in its phases, it has had a significant impact on human culture such as language, calendar, art, and mythology since ancient times.
The rotation of the Moon is synchronized with its revolution (tidally locked) and therefore always faces the Earth on the same side. The gravitational influence of the Moon causes the tides of the Earth's oceans and the length of day and night to lengthen. The ratio of the size of the moon to the sun is similar to the ratio of distance, so that its viewing angle is almost the same as that of the sun, and the moon can completely obscure the sun during a solar eclipse to form a total solar eclipse.
The Moon was the first extraterrestrial planet ever landed on by humans.
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That's right.
There is only one natural satellite of the Earth, and that is the Moon. The Moon is the only natural satellite of the Earth.
In the universe, the Moon is the closest natural celestial body to the Earth. Although sometimes asteroids or interstellar solid particles get closer to the Earth, and even meteorites fall into the Earth, the vast majority of these asteroids disappear after approaching the Earth. In terms of natural objects that have definite orbits, the closest object is the Moon.
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The celestial system of the Earth and the Moon is called the Earth-Moon system.
The Moon revolves around the Earth and forms the Earth-Moon System The Earth and other planets, moons, comets, meteoroids, interplanetary matter, etc., which revolve around the Sun, together make up the Milky Way The Sun and other stars, as well as various celestial bodies, make up the Milky Way.
There are many similar celestial systems outside the Milky Way, called extragalactic galaxies, referred to as galaxies The Milky Way and hundreds of millions of noisy galaxies together are called total galaxies, which are the highest level of celestial systems currently known by mankind, and are also the universe known to mankind
The Earth and the Moon form a celestial system called the Earth-Moon system. In the Earth-Moon system, the Earth is a mid-ridge celestial body, so the movement of the Earth-Moon system is generally described as the orbital motion of the Moon towards the Earth. However, the actual motion of the Earth-Moon system is the orbital motion of the Earth and the Moon in relation to their common center of mass.
The Earth and the Moon orbit their common center of mass for 27 days, 7 hours, 43 minutes and seconds, which is the day, and the position of the common center of mass is about 4,671 kilometers from the center of the Earth.
The Earth is a celestial system with its natural satellite, the Moon, and the Earth is its central celestial body. Due to the huge disparity between the mass of the Earth and the mass of the Moon (Cheng:1), the center of mass of the Earth-Moon system is only about 1650 km from the center of the Earth.
The so-called so-called so-earth distance is actually the distance between the center of the sun and the center of mass of the Earth-Moon system; The revolution of the Moon around the Earth is actually the revolution of the Earth and the Moon relative to their common center of mass. As a result of this revolution, the common center of mass has a displacement in the Earth's interior with the Earth's sidereal months as its cycle.
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If we compare the material composition of the Moon and the Earth, what will we find?
a.Both the Moon and the Earth are made up of the same set of basic elements.
b.The Moon and the Earth are made up of the same single element.
c.The elements that make up the Moon are completely different from those of the Earth.
d.Both the Earth and the Moon are made up of a single element, but they are not the same.
Correct Answer: a
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Summary. Pro-<>
We are happy to answer what celestial bodies the Moon and the Earth belong to: the Sun belongs to the Milky Way; The Earth belongs to the solar system; The Moon belongs to the Earth. The Earth, the Moon, and the Sun are the three celestial bodies we are most familiar with, representing planets, moons, and stars, respectively.
The average radius of the Moon's orbit around the Earth is about 10,000 kilometers, and the celestial system composed of the Earth and the Moon is called the "Earth-Moon System".
What celestial bodies do the Moon and the Earth belong to?
Dear <> is happy to answer for you what celestial bodies the Moon and the Earth belong to: the Mass Split Sun belongs to the Milky Way; The Earth belongs to the solar system; The Moon belongs to the Earth. The Earth, the Moon, and the Sun are the three celestial bodies we are most familiar with, representing planets, moons, and stars, respectively.
The average radius of the Moon's orbit around the Earth is about 10,000,000 square meters, and the celestial system composed of the Earth and the collapsed Moon is called the "Earth-Moon System".
Dear [Smile Miriku] <>
The Earth is a very special planet in the solar system, because it has the moon as a huge moon. There is a lot of evidence that the Moon was the product of an unusual impact event shortly after the Earth was first formed.
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The Earth is a planet and the Moon is a satellite. The Earth belongs to the solar system; The Moon belongs to the Earth, and the Moon is the largest celestial body from the Earth and a natural satellite of the Earth.
The moon is the closest celestial body to the earth, and it is also the second planet where humans have landed on Yandanhao in person, and it is the most thoroughly studied celestial body by mankind so far, but it has been proved that there are still countless things about the moon.
The average distance between the Earth and the Moon is 380,000 kilometers, which is about the diameter of thirty Earths. If we can fly to the moon in a civilian aircraft, it will take about 20 days of continuous flight. If we want to go to the moon for a long time, it will take about 21 years to travel at a speed of 100 miles a day.
The Moon's orbit around the Earth is not a circle, but an ellipse, so the distance between the center of the Earth and the center of the Moon changes every time the Moon orbits.
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Planets usually refer to celestial bodies that do not emit light by themselves and orbit stars, and the Earth belongs to the planet; The moon is a natural or man-made celestial body orbiting the planet, and the moon is a collapsed satellite of the earth.
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The Earth is a planet and the Moon is a satellite.
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Analysis: Planet D usually refers to a celestial body that does not emit light slowly and does not emit light, and the earth belongs to the planet; A natural celestial body or cluster of satellites orbiting a planet.
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Summary. The Moon and the Earth are both planets, the Moon is a satellite of the Earth and a celestial body orbiting the Earth; The Earth, on the other hand, is one of the planets in the solar system, a large solid-state body that orbits the sun in the solar system.
The Moon and the Earth are both planets, and the Moon is the satellite of the Earth, and it is a celestial body that orbits the Earth; The Earth, on the other hand, is one of the planets in the solar system, a large solid-state body that orbits the sun in the solar system.
Related Extensions: Planets generally refer to those celestial bodies that orbit the Sun in the solar system, including Earth, Mars, Venus, Mercury, Jupiter, Saturn, Uranus, Neptune, and dwarf planets. So, both the Moon and the Earth belong to different categories among the planets.
Definition of planets: Scientists' definitions of planets have been constantly revised and refined, but the more widely accepted definition is that planets orbit stars with enough mass and gravity to give them a largely spherical shape and to remove stray material from their orbits. Classification of the planets:
Planets can be divided into inner and outer planets according to their orbital positions. The inner planets include Mercury, Venus, Earth, and Mars, all of which are close to the Sun and have relatively close orbits. The outer planets include Jupiter, Saturn, Uranus, Neptune, and dwarf planets, which are farther away from the Sun and have wider orbits.
This way of classification is mainly related to the gaseous properties of the planets. Characteristics of planets: Planets have their own characteristics such as shape, size, trajectory, and gravitational field.
Among them, the morphology of the planet is mainly affected by its own mass, density, and physical state; The size of the planet can be determined by its radius and mass; The trajectory of a planet is usually determined by factors such as its distance from the Sun and its speed; The gravitational field of a planet affects the trajectory of other small celestial bodies around it.
Of course, the Earth is bigger, and the radius of the Moon is twice the radius of the Earth, that is, about 1,740 kilometers.
The moon is large, and studies have shown that the earth's rocks are at most 4.5 billion years old, and some of the moon's rocks are 5 billion years old, and the moon is actually the earth's companion star.
Why is the Moon moving farther and farther away from the Earth. >>>More
There is a widely accepted theory of the formation of the moon that is called"The Great Collision Theory"or"Rain Stone Theory"。According to this theory, about 4.5 billion years ago, shortly after the formation of the Earth, a Mars-sized celestial body called Theia collided with the Earth, and the collision was thought to be very large and violent. >>>More
The first question, I think that if the earth and the sun are close enough, there should be no day and night, because even refraction is enough to make the earth bright, of course, the four seasons are gone, the surface of the earth will be tens of thousands of high temperatures, how can there be four seasons, and about the moon's roundness, I think that under such a strong light, if people can really survive, the naked eye will not be able to see the moon >>>More