A celestial body in the universe, the largest celestial body in the universe

Personally, I think that if it is divided into 6 categories, it should be divided according to the structure of the celestial body itself

Earth-like planets: gold, fire, water, earth, etc. The surface has a rocky crust, a liquid mantle in the inner layer, and the core in the center. The moon is also counted in this category.

Jupiter: wood, earth, sky, sea, underworld, etc. are mainly composed of gas (not the atmosphere) and have a core in the center.

Comet: Composed of ice-like substance, it volatilizes as it runs, and looks like it has a tail.

Stars: Most of what is seen in the sky are stars. The entire celestial body is constantly undergoing thermonuclear reactions, releasing a lot of energy and light.

Nebulae: Composed mainly of gaseous hydrogen, but without a thermonuclear reflection, unlike Jupiteroids, there is no core in the center.

Supernova: a rare occurrence in a thousand years. It is the last scenario when the life of the star reaches its limit.

It is recommended that you look for it like this:

Stars – Sun, Sirius, Vega.

Planets – Earth, Mars, Saturn.

Satellite - Moon.

Galaxies – Milky Way, Large Magellanic Nebula, Great Andromeda Nebula.

Nebula – Crab Nebula, Horsehead Nebula.

Comets – Halley's Comet, Hyakubu Comet, Hale-Pop Comet.

Supernova – 1987a, Crab Nebula.

Asteroids – Ceres, Homo sapiens.

Dwarf planet – Pluto.

Neutron stars and black holes may be harder to find.

There are many celestial bodies in the universe, and the classification and hierarchy of celestial bodies are arranged in order from small to large, as follows: meteorites (meteorites) Moon (satellites) Earth-Moon systems (planets) Solar system (stars) Orion (nebula) Milky Way (galaxies) Virgo supercluster (star fields) Inner Universe Outer Universe ......

Personally, I think it should be.

Fixed star. Planet.

Satellite. Comet.

Meteor. Interstellar matter.

**And text descriptions can be searched in "**" and "Encyclopedia".

There are also stars and galaxies, these two ** are easy to find.

What is the largest celestial body in the universe? Star Awareness Project

At present, the largest planet known to mankind in the universe is WOH G64 in LMC, a red supergiant star in the Big Magellanic Galaxy, with a diameter of 1540-2575 times that of the Sun, and is one of the largest stars currently known.

The largest planet in the universe.

UY Shield, the red supergiant in the constellation Shield, has long been considered the largest known star. However, according to the high-precision measurement method, the radius of the Uy of the shield seat is about 775 r.

The largest known star is the red supergiant in the Big Magellanic galaxy - WOH G64. According to the stellar evolution model, the upper limit of the radius of a star is 2,500 times the mass of the Sun. However, the diameter of WOH G64 is 1540-2575 times that of the Sun.

In other words, the red supergiant - WOH G64 is the largest star known to mankind. The so-called red supergiant refers to a rare high-luminosity supergiant with a huge loss of material and obvious emission lines in the spectrum.

In addition to this, supergiant red is a very rare star in the world and the largest star in the universe. For example, the Red Supergiant II Canis Major VY and Cygnus NML.

One of the red supergiants is WOH G64, located about 160,000 light-years from Earth. In addition to WOH G64, the larger planets in the universe include Westeros 1-26, RSGC1-F02, RSGC1-F01, Canis Major VY and so on.

This is the largest: VY Canis Major (vycma, full name VY Canis Majoris) is a comparison of VY Canis Major and the Sun, in which the Sun does not see a red supergiant star located in the constellation Canis Major, 5,000 light-years away from Earth, with an apparent magnitude. It is speculated that its mass is about 30 40 times the mass of the Sun and about 1800 2100 times the diameter of the Sun, surpassing the orbit of Saturn and being the largest of the currently known stars.

The Canis Major VY is not only huge, but also has as much as 500,000 times the luminosity of the Sun, but it is not visible to the naked eye because of the interstellar dust. Therefore, it is also classified as a supersuperstar. Canis Major is at the end of the stage of stellar evolution and is spewing out a large amount of gas at a massive rate.

In the future, it may trigger a supernova**. Chinese astronomers used the millimeter-wave radio telescope of the Qinghai Observatory of the Purple Mountain Observatory to monitor the water veins and radiation in the gas shell of the red supergiant VY Canis Major (VYCMA) for nearly one month from August 26 to September 24, 1993. A sinusoidal fast oscillation with a relative change of intensity of 20%-25% and a period of days is found.

This is the shortest period of change ever found in the Red Star.

I'm 14 years old, so let me correct the answer! Canis Major VY is no longer the largest planet, he is now the second in the universe, and the largest is UY in the constellation Shield, this star is a newly discovered star and the largest in the universe. Canis Major VY was discovered a few years ago.

Its diameter is 2.8 billion kilometers, and it would take 1,100 years for a passenger plane to orbit it again, and the Shield Seat UY is even larger than him. Excuse me, there is no data on the diameter of the shield seat at the moment?

The largest celestial body in the universe is the ton618 black hole.

From a stellar point of view alone, Uy Shieldis is indeed the known "largest lead annihilation". But from the point of view of all celestial bodies, Uy Shieldus is far from the limit of the universe. The largest celestial object ever discovered is the ton618 black hole.

The size of the ton618 black hole is 200 million billion times that of the Sun, which means that it can "swallow" so many stars as big as the Sun. The mass of the ton618 black hole is about 66 billion times that of the sun, and the most massive star we know now is r136a1 in the large Magellanic galaxy, which is hundreds of times the mass of the sun, but it is obviously completely incomparable to the ton618 black hole.

Einstein's general theory of relativity has made people realize that there may be a super-gravitational object in the universe that cannot escape even light, but for a long time afterward, many researchers felt that black holes only exist theoretically, not really.

Later, the famous physicist Stephen Hawking developed the theory of black holes, and he proposed that black holes are real, and they vary in mass and size. With the joint efforts of many scientists, we finally have a certain understanding of this "mysterious celestial body" in the universe.

Summary. Celestial bodies: Celestial bodies are collectively referred to all cosmic stars, including interstellar matter and various accumulating entities.

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 aggregators form the stars, the diffuse ones make up the nebula, and the extremely thin ones that diffuse are called interstellar matter, including interstellar gas and interstellar dust, all of which are collectively called celestial bodies.

Artificial satellites, spacecraft, space laboratories, and various probes launched into space by humans are called artificial celestial bodies.

Hello, glad to answer for you. The basic celestial bodies of the universe: stars and nebulae.

Stars and stars are fundamental celestial bodies. There are eight planets in the solar system: Mercury, Venus, Earth, Jupiter, Saturn, Uranus, and Neptune (Pluto has been expelled from the planet and reduced to a dwarf planet.)

Celestial bodies: Celestial bodies are collectively referred to all cosmic stars, including interstellar matter and various accumulating entities. 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 of pure friends. The aggregators form the stars, the diffuse ones make up the nebula, and the extremely thin ones that diffuse are called interstellar matter, including interstellar gas and interstellar dust, all of which are collectively called celestial bodies. The artificial sail pants satellites, spaceships, space stuffy laboratories, and various probes launched into space by humans are called artificial celestial bodies.