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Cosmic celestial bodies can be broadly divided into the following categories:
Satellite. Refers to a celestial body that orbits a planet.
Planet. Refers to a celestial body that orbits a star.
Fixed star. It refers to a celestial body that is already capable of nuclear fusion reactions inside and glows on its own. Red giants, white dwarfs, and brown dwarfs, as they are commonly thought of, are all ordinary mass stars in the final stages of evolution.
Neutron stars, quark stars, and black holes all evolve from stars with masses that exceed different boundaries.
Nebula. is a cloud-like object composed of gas and dust.
Comet. is a celestial body made up of ice and dust. As it moves closer to the sun, the ice evaporates into a tail-like shape, forming a huiwei.
Asteroid. Refers to smaller, irregularly shaped celestial bodies. Most of them are located in the asteroid belt between Mars and Jupiter.
Meteor. It refers to a celestial body in which small objects distributed in the universe rub against the atmosphere as they pass through the atmosphere, producing light and heat.
Quasar. Refers to a star-like celestial body. Such objects resemble stars but are not stars, and the spectrum is like nebulae but not nebulae.
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The classification of celestial bodies in the universe, in order from smallest to largest, is as follows: Meteorite (meteorite) Moon.
Satellites) Earth-Moon System (Planets) Solar System.
Stars) Orion (nebula) Milky Way (galaxy) Virgo Supercluster (star field) Inner Universe Outer Universe ......
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Celestial bodies in the universe can be classified according to their size, state, fortune and other aspects. Here's a common way to categorize:
1.Moon: A celestial body that orbits a fixed planet, including a large number of man-made objects.
2.Planet: A celestial body that orbits a fixed star.
3.Stars: Celestial bodies that can emit light and heat through nuclear fusion reactions, including blue giants, red giants, white dwarfs, etc., and can be divided into neutron stars, quark stars, black holes, etc.
4.Nebula: A type of celestial body in the form of clouds and fogs, mainly composed of gas or cosmic dust.
5.Comet: A celestial body made up of ice and dust that evaporates as it gets close to the star, forming a long tail.
6.Asteroids: Celestial bodies that orbit a fixed star, but are inherently irregular in shape and extremely complex in composition.
The above is just a way to classify the celestial bodies in the universe, and the celestial bodies in the universe are far more abundant than these, such as galaxies, star clusters, nebulae, stellar gas clouds, interstellar dust, etc. are all common celestial objects in the universe.
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There are two categories:1,
Natural celestial bodies (objects that exist in the earth's atmosphere that are observed in the sky) and artificial celestial bodies (satellites, spacecraft, space experiments).
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There are three main categories of celestial bodies:
1. In the solar system: the sun, planets, satellites, asteroids, comets, meteoroids, interplanetary matter.
2. In the Milky Way: stars, star clusters, nebulae,Interstellar matter, intergalactic matter, etc.
3. Infrared, ultraviolet, radio, X-ray and ray-ray sources discovered by radio detection and space detection.
Stars are celestial bodies. Celestial bodies refer to the forms of existence of matter in cosmic space. The agglomeration of celestial bodies, thus forming the object of study of various astronomical states.
The cosmic matter that people see exists in various forms. The agglomerates form the stars, the diffuse ones form the nebula, and the extremely thin ones that diffuse are called interstellar matter, including interstellar gas and interstellar dust. All of these substances are collectively known as celestial bodies.
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The types of celestial bodies are the sun, planets, satellites, asteroids, comets, meteoroids, interplanetary matter, artificial satellites, spacecraft, space laboratories, various detectors, etc., and celestial bodies refer to the form of existence of matter in cosmic space. Celestial bodies, also known as stars, refer to objects in space, and more broadly interpreted as the aggregation of all individuals and celestial bodies in the universe, thus forming the object of study of various astronomical states.
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The most basic types of celestial bodies in the universe are stars and nebulae.
Celestial bodies are the forms of matter that exist in the universe, including stars, nebulae, planets, asteroids, moons, comets, meteoroids, interplanetary matter, interstellar matter, etc., among which the most basic celestial bodies are stars and nebulae. Celestial bodies, also known as stars, refer to objects in space and, more broadly, all individuals in the universe. The agglomeration of celestial bodies, thus forming the object of study of various astronomical states.
Celestial bodies are the real existence of space matter in the universe, and they are also the general name for various astral bodies and interstellar matter. Artificial satellites, spacecraft, space laboratories, lunar probes, planetary probes, etc., which are launched by humans and operated in space, are called artificial celestial bodies.
Stellar introduction
Stars are giant spheres of light-emitting plasma, mainly hydrogen, helium, and trace amounts of heavier elements, and on a fine night, there are always countless points of light in the night, most of which are stars, most of which are stars. The Sun is the closest star to Earth, and almost all of the stars that can be seen at night are in the Milky Way.
Of the approximately 300 billion stars in the Milky Way system, only a fraction of them can be observed. Human beings have a long history of observing stars, and there are many ways to observe them. The brighter stars are divided into constellations and clusters, some of which have their own names.
The brightness of a star is known as magnitude, and the brighter the star, the lower the magnitude, and astronomers also compile a catalog of stars to facilitate their study.
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a.Stars and planets BStars and nebulae.
c.Comet and Earth DSatellites and nebulae.
The universe is physically defined as all space and time (collectively referred to as space-time) and their connotations, including all forms of energy, such as electromagnetic radiation, ordinary matter, dark matter, dark energy, etc., of which ordinary matter includes planets, moons, stars, galaxies, galaxy clusters and intergalactic matter. The universe also includes physical laws that affect matter and energy, such as conservation laws, classical mechanics, relativity, etc.
The Great Theory is a modern cosmological description of the evolution of the universe. According to the estimates of this theory, space and time appeared together after the great ** of 100 million years ago, and as the universe expanded, the energy and matter that originally existed became less dense. The initial accelerated expansion is known as the inflationary period, after which the four fundamental forces known separate.
The universe gradually cooled and continued to expand, allowing the first subatomic particles and simple atoms to form. Dark matter gradually accumulates and forms foam-like structures, large-scale fibrous structures and cosmic holes under gravitational pull. Huge clouds of hydrogen and helium molecules were gradually drawn to the densest concentrations of dark matter, forming the first galaxies, stars, planets, and everything.
Space itself is expanding, so objects that are currently 46.5 billion light-years away from Earth can be seen, because these lights were generated 13.8 billion years ago and are closer to Earth than they are today.
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