Is the Earth a star or a planet, is the Earth a star or a planet, is the Earth big or a planet big

The Earth is not a star.

The earth, the moon, the sun, and many stars are all celestial bodies (stars) in the universe.

In it, the earth is a planet, the sun is a star, the earth orbits the sun, and the relationship between the sun and the earth is a subordinate relationship;

The moon is a satellite of the earth, the moon orbits the earth, and the relationship between the earth and the moon is a subordinate relationship.

Venus, Jupiter, Mercury, Mars, Saturn, Uranus, Neptune, and Pluto are parallel to the Earth in the universe, all orbiting the Sun, and they are called the nine planets of the Sun together with the Earth, and it is said that the tenth planet has been discovered at present.

Looking forward to choosing me.

In summary, the Earth is not a star, but a planet orbiting the Sun in relation to the star (the Sun) alongside the other eight stars such as Venus.

Planet.

The earth is a planet, one of the eight planets in the solar system, the so-called planet generally refers to the celestial body that does not emit light by itself, and will revolve and rotate around the star, while the earth itself does not emit light, it revolves around the sun, and the star will rotate while moving.

The earth is a planet, and the sun is a star. Stars are celestial bodies that are capable of emitting light and heat on their own.

Planets. I'm dizzy.

The sun is the star.

Is it okay for Earth to be one of the eight planets?

Planets are different from stars, planets orbit a star, are non-luminous planets, often rotate in the same direction as the rotation of the star they orbit, and have a certain mass to maintain a spherical shape, such as the Earth. Stars, on the other hand, are heat-emitting planetary bodies that move on their own, such as the Sun, which is closest to Earth. So the stars we see at night are stars.

Earth is one of the eight planets in the solar system, the third planet in order from near to far, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, 100 million kilometers away from the sun. The Earth rotates from west to east while revolving around the Sun. It is 4,04.6 billion years old, and it has a natural satellite, the Moon, which forms a celestial system, the Earth-Moon System.

It originated from the primordial solar nebula 4.6 billion years ago.

The Earth's equatorial radius is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the equatorial circumference is about 40076 kilometers. The surface area of the earth is 100 million square kilometers, of which 71% is oceans and 29% is land.

The interior of the earth has a core, mantle, and crust structure, and the outside of the earth has a hydrosphere, atmosphere, and magnetic field. The Earth is the only celestial body in the universe where life is known to exist, and it is home to millions of living beings, including humans.

The Earth is not a star, it is a planet.

Earth is the third planet in the solar system from the inside and outside, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, about 100 million kilometers (1 astronomical unit) from the sun. The Earth rotates from west to east while revolving around the Sun. At present, it is 100 million years old, and there is a natural satellite - the moon, and the two form a celestial system - the Earth-Moon system.

It originated hundreds of millions of years ago from the primordial solar nebula.

The radius of the Earth's equator is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the equatorial circumference is about 40075 kilometers. The Earth's surface area is 100 million square kilometers, of which 71% is oceans and 29% is land. The main components of the atmosphere are nitrogen and oxygen, as well as small amounts of carbon dioxide and argon.

Earth Formation:

The history of the earth is very long. According to radiocarbon dating, the solar system was formed about 6.5 billion years ago, while the native Earth was formed about 6.5 billion years ago. Theoretically, the formation of the sun began with the gravitational collapse of a huge cloud of hydrogen molecules 100 million years ago, and most of the collapsed mass was concentrated in the center, forming the sun; The rest of the space rotates and flattens out to form a protoplanetary disk, which in turn forms planets, moons, asteroids, comets, meteoroids, and other small solar system bodies.

The nebula hypothesis asserts that the microasteroids that formed the Earth originated from a thin mass of gas, ice particles, and dust with a diameter of 1 to 10 kilometers that was left after accretion and collapse. These materials grew over 10 million to 20 million years to form the native Earth. The nascent Earth's surface is an "ocean" of magma.

The Earth is a planet.

Generally speaking, planets need to have a certain mass, and the mass of the planet must be large enough to be nearly spherical, and it cannot undergo nuclear fusion reactions like stars.

With the discovery of a number of objects the size of Pluto, the scientific definition of the word "planet" seems more poignant. Historically, planets got their names from the fact that their positions were not fixed in the sky, as if they were walking in the stars.

The five planets visible to the naked eye in the solar system, Mercury, Venus, Mars, Jupiter and Saturn, have been discovered by humans since prehistory. In the 16th century, heliocentrism replaced geocentrism, and mankind understood that the Earth itself was also a planet.

The nature of the Earth

1. Internal structure: The internal structure of the earth can be divided into three layers: the crust, the mantle and the core. Under the action of the earth's gravity, a large amount of gas gathers around the earth to form an envelope, which is the earth's atmosphere.

2. Movement cycle: The earth is like a spinning top, constantly rotating from west to east along the axis of rotation. Her rotation period is 23 hours, 56 minutes and 4 seconds, which is about 24 hours.

At the same time, the Earth also revolves around the Sun, and her orbit is elliptical, with a half-major diameter of 149,597,870 kilometers. It takes days to rotate a week, which is a year.

The Earth is a planet.

The earth belongs to one of the eight planets in the solar system, ranking the third closest to the sun in terms of distance, and is also the largest terrestrial planet in the solar system in terms of diameter, mass and density, with a distance of 100 million kilometers from the sun, and the direction of the earth's rotation is from west to east.

Planets generally refer to celestial bodies that do not emit light and orbit stars, and the direction of rotation is generally consistent with the rotation direction of the star around them.

The nomenclature of the earth:

The English name of the earth, earth, is derived from Middle English, its history can be traced back to Old English, and there are cognate words in the Germanic languages, and its original Germanic root is erō, which is called terra in Latin, which is the name of Thea, the goddess of the earth in ancient Roman mythology, and the name in Greek This name is the name of Gaia, the goddess of the earth in Greek mythology.

The Chinese word "earth" first appeared in the Ming Dynasty's period of Western learning and eastward progress, the first to introduce the word was the Italian missionary Matteo Ricci, he used the word in the "Kunyu Wanguo Quantu", in the late Qing Dynasty, Western modern science was introduced into China, the earth circle theory was gradually accepted by the Chinese, the word earth was widely used, and the article "Earth Theory" was published in the first month of the journal.

The Earth is not a star, the Earth is a planet that revolves around the Sun. Earth is one of the eight planets in the solar system, the third in order of near and far from the sun, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, 100 million kilometers away from the sun. The Earth rotates from west to east while revolving around the Sun.

Earth. The shape of the Earth is roughly ellipsoidal. The effect of the Earth's rotation causes a slight flattening along the Earth's axis running through the poles and a slight uplift near the equator.

Earth provides the only environment that can sustain the evolution of known life. It is thought that about 4 billion years ago, high-energy chemical reactions produced molecules that could replicate themselves, and another 500 million years later, a common ancestor of all life appeared, and then differentiated into bacteria and archaea.

It is estimated that only one-eighth of the planet is habitable for humans. Three-quarters of them are covered with seawater and a quarter are land.

Planet.

The earth is a planet, one of the eight planets in the solar system, the so-called planet generally refers to the celestial body that does not emit light by itself, and will revolve and rotate around the star, while the earth itself does not emit light, it revolves around the sun, and the star will rotate while moving.