Comets are formed by what and what freezes

Comet material is mainly composed of water, ammonia, methane, cyanide, nitrogen, carbon dioxide, etc., while the comet nucleus is composed of a mixture of water, carbon dioxide (dry ice), ammonia, and dust particles that have condensed into ice, making it a "dirty snowball".

Comets do not have a fixed volume, and when they are far from the Sun, they are very small; As it approaches the Sun, the hair becomes larger and larger, the tail becomes longer, and the volume becomes very large. The length of the comet's tail can reach more than 200 million kilometers. The mass of the comet is very small, and most of it is concentrated in the nucleus of the comet.

The average density of the nucleus of the comet is 1 gram per cubic centimeter. The material of the comet and tail is extremely thin, and its mass is only 1%-5% of the total mass, or even less. Comet material is mainly composed of water, ammonia, methane, cyanide, nitrogen, carbon dioxide, etc., while the comet nucleus is composed of a mixture of water, carbon dioxide (dry ice), ammonia, and dust particles that have condensed into ice, making it a "dirty snowball".

The nature of the comet is not known for sure, because it is hidden in the comet and cannot be directly observed, but we can guess some of its properties from the comet's spectrum. In general, these spectral lines indicate the presence of gases with Oh, NH and NH2 groups, which can easily be explained as a result of the decomposition of the most common stable hydrogen compounds of elements C, N and O, namely CH4, NH3 and H2O, whose frozen ice may be the main component of the comet nucleus. Scientists believe that various ice and silicate particles are scattered in the comet nucleus in loose structures, some like dirty snowballs, with a density of about gram cubic centimeters.

When ice is heated and evaporated, they leave behind loose rocky material containing individual particles ranging in size from 104 centimeters to about 105 centimeters. As the Earth passes through the comet's orbit, we perceive these observed particles as meteors. There is reason to believe that the comet may be part of the material in the nebula that gathered to form the sun and planets.

Therefore, it is interesting to find a sample of comet material for analysis in order to know more about the origin of the solar system. This plan could theoretically be done, for example, by trying to make a rendezvous in space with a periodic comet. Such a plan is currently being studied.

LZ is a scientific question, comets are formed by freezing (rock fragments), (solid particles) and (water).

Comets are formed by freezing water, gas, and dust The anniversary of its appearance is 76 years, the last appearance was in 1986, and the next Halley's Comet visit to Earth is estimated to be about 2062.

Comets are formed by the freezing of debris, solid particles, and water.

Comets are formed by freezing (of rock fragments), (solid particles), and (water).

Comets are mainly made up of low-boiling materials such as ammonia and methane, but also contain fine gravel. As the comet cloud moves away from the Sun, ammonia, methane, and other materials solidify into a hard "ice cube." This icy comet structure is stable as it moves rapidly in outer space.

A comet, commonly known as a broom star, is a small object of the solar system made of ice, which heats up and begins to deflate as it approaches the Sun, revealing a visible atmosphere, known as a comet, and sometimes a comet tail. These phenomena are caused by a combination of solar radiation and solar wind on the nucleus of the comet, which is made up of loose ice, dust, and small rocks.

Comets also have a large range of orbital periods, which can range from a few years to millions of years. Short-period comets come from the Cooper belt beyond the orbit of Neptune, or are associated with discrete disks. Long-period comets are thought to have originated from the Ottecloud, a spherical shell of ice-aged frozen objects that extend half the distance to the nearest star outside the Cooper Belt.

Long-period comets are perturbed by the gravitational pull of passing stars and galactic tides and head directly towards the Sun. Comets with hyperbolic orbits may have been ejected into interstellar space along hyperbolic trajectories before entering the inner solar system, and will only pass through the solar system once. Exoplanetary comets from outside the solar system and probably common within the Milky Way have also been detected.

Comet tails are thought to be composed of gas and dust; The 4 combined effects blow it out of the comet:

1. The initial momentum obtained when the gas and associated dust evaporate from the nucleus of the comet.

2. The radiant pressure of sunlight pushes dust away from the sun.

3. The solar wind blows charged particles away from the sun.

4. Gravitational attraction towards the sun.

The interaction of these effects makes each comet tail look different. Of course, the material evaporates into the comet and tail, consuming the material of the comet's nucleus. Sometimes it comes in the form of an explosion, as is the case with Comet Billa; It broke into two when it passed through the sun in 1846, and disappeared after that passage in 1852.

One view is that comets formed inside the solar system. It is speculated that it may have been formed by large planets such as Jupiter and some material erupted by volcanoes on the moons, perhaps due to the collision of two large planets in the solar system.

There is also a very different view that comets do not form in the solar system, but come from interstellar space outside the solar system, and that the gravitational pull of the sun has captured them from interstellar space.

Later, the Dutch astronomer Oort proposed the Oort cloud hypothesis. This view has been widely valued by the scientific community. This idea is that far away from the edge of the solar system, there is a cold reservoir of comets - the comet cloud.

Therefore, the cloud was proposed by Oort, also known as Oort cloud. Here, a large number of comet nuclei gathered, with a mass smaller than that of Earth, which became the source of the creation of "new" comets. Because comets are located between the Sun and other stars, some comets change their orbits due to the attraction of stars, and some are thrown into the solar system, while others are thrown out of the solar system.

There is also an opinion, although different from Oort, that comets arise at a great distance from the Sun, where the air temperature forms a cold environment below -170, and there is no exposure to high temperatures for a long time.

Recently, it has been suggested that comets arose from the rotating fragments of the primordial solar nebula and were part of the dense interstellar clouds that formed the Sun and the Great Planets, first consisting of gas molecules, water, carbon dioxide and other substances, which later coalesced into silica dust particles, which gradually coalesced into larger particles, and over time, comets.

Deciphering Comets: Why Comets Keep Trailing Their Long Tails - Planetarium.

Comets were part of the formation of the solar system, and due to gravity, particles inside the disk gathered on solids of various sizes.

In addition, comets are extraterrestrial visitors, and it can be assumed that the passing quasars interact with the Sun's gravitational pull, and some of the material in them is deflected and enters the Sun's control area in the form of most scales and claws. Comets are cosmic matter that revolve around the Sun and have elongated or sometimes irregular orbits. These objects have nuclei called Hui nuclei, and it is a comet that surrounds them like a blanket.

Then, at the end of that, there is the end of the picture. Once you understand that the structure of a comet is made up of these three parts, you can see the components of each of these three parts.

The comet's innermost nucleus, the comet's nucleus, is a mixture of stone, dust, ice, and frozen gas. These gases contain carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), and ammonia (NH3). Different comets, the proportions of the components are also different.

Some comets contain a lot of dust, and some contain a lot of stone and ice. Comets with more dust in them are seen as cosmic polluting snowballs. Huinucleus may contain other compounds, such as ethanol and methanol.

It is important to know that the nucleus of the comet is a solid frozen thing. Because the nucleus of the comet determines the formation of the comet part.

After the comet nucleus is heated by the sun, the comet nucleus begins to produce and surround the comet nucleus. The heat turns a part of the cocoa solid into a gas. The main components produced by comets are gas, dust, and water.

Some gas gases include gas gas, hydrogen gas, carbon monoxide, carbon dioxide, amonia gas, methane, and methanol found in the nucleus of coma. Oxygen and water make up a large proportion of the spinning top.

Solar radiation pushes the dust away from the top, forming the tail of the top. The tail of a comet, like the rest of the comet, is made up of gas and dust. The tails of many gyroscopes are made up of water, carbon monoxide, and nitrogen.

Depending on the composition of the mixture, the comet tails can be divided into different groups. Dust ionization, known as the complex ion comet. Gyro tails, which have dust as the main component, are classified as dust gyro tails.

By pushing away the dust, the comet moves forward, leaving a trail of dust and claws. The composition of a comet is the same in its parts, in particular the nucleus of the comet, which determines the formation of the comet and the tail of the comet. Therefore, knowing the nucleus composition of a particular comet can help identify the coma's hair and tail components of that comet.

Deciphering Comets: Why Comets Keep Trailing Their Long Tails - Planetarium.

Comets are made up of gas and dust. When moving, due to its very high speed, the gas on the comet is burned to form a "tail".

One day the body orbits the Sun in an elliptical or parabolic, hyperbolic orbit. When they are very close to the sun, under the influence of sunlight and heat, part of the material is evaporated into gas, and is pushed to the back of the head, becoming a strange tail star, which is called a comet. This tail is made of gas and dust.

Comets are made up of loose ice, dust, and small rock particles, and the reason why comets glow when they are close to Earth is because of the unique carbon molecules produced by comets, which are produced by chemical reactions after approaching Earth's oxygen molecules, so they emit light.

A comet is a celestial body formed by freezing water, ammonia, methane, and other substances. As for why comets emit light when they are close to the Earth, it is because the unique carbon molecule it produces produces a chemical reaction when it approaches the oxygen molecule, so it shines.

Comets are made up of loose ice, dust, and small rock particles, and the reason why comets emit light when they get close to the Earth is because of the chemical reaction produced by the comet with exotic carbon molecules and oxygen molecules close to the Earth.

Comets are made up of rocks, dry ice, ammonia, etc., which glow when these materials are reflected by direct sunlight.

A typical intact comet is divided into three parts: the nucleus, the coma, and the tail.

A comet is a celestial body that enters the solar system and orbits the sun in brightness and shape depending on the solar distance. The comet nucleus is made up of icy material, which sublimates as the comet approaches the star, forming a hazy comet and a tail of thin material around the ice core.

The comet has a very small mass and density, and when it is far away from the sun, it is just a "dirty snowball" of frozen ice cubes such as water, ammonia, methane, etc., and many solid dust particles. When approaching the Sun, the comet is broken down into a head and tail by solar radiation, which resemble a broom.

There are generally 3 views: formed interstellarly; formed in the marginal regions of the solar system; Formed in the planetary regions of the solar system (outside the asteroid belt). The first of the three views is outside the solar system, and the last two are inside the solar system.

If you look at the comet's orbit, all three of these views are possible. Comets with elliptical orbits, which rotate around the Sun over and over again, are members of the solar system, and it is natural to search for their origin within the solar system. Comets with parabolic and hyperbolic orbits mean that they come from distant interstellar space, and a visit to the solar system is gone, and their origin should be found in interstellar space outside the solar system.

In fact, the problem is not so simple, and current observations do not prove that comets with parabolic and hyperbolic orbits are outside the solar system. Because the orbit of a comet is generally determined based on the observation of the segment closer to the Sun, which accounts for only a small part of its entire orbit, and the difference between the three orbits in the segment close to the Sun is not large. Observations are generally a bit wrong, especially for the shape of an orbit with an eccentricity of about 1, it is difficult to determine whether it is elliptical or parabolic or hyperbola, and the perturbation of the planets often changes the orbit.

So the orbit deduced from the observations is not exactly its original orbit. In the 1957 comet orbit table, 283 of which were parabolic and 85 were hyperbola. Several people have shown that these comets with parabolic and hyperbolic orbits are also elliptical in their original orbits, if the planets perturbate them are taken into account.

It's just that the eccentricity is close to 1. Most of the comets discovered each year have orbital periods in the order of millions of years, and the eccentricity is in the order of millions. The above shows that the vast majority of comets are celestial bodies within the solar system.