What is the name of the system of celestial bodies? Which celestial body is not an asteroid? Classification of celestial bodies

Jupiter had best place. Finally he brought 318 masses of earth “on the scales.” Goliaths made of gas. However, building such large planetary cores would be very labor intensive. Therefore, for some researchers, gas planets arose without passing through fixed cores: in their opinion, only the denser regions of the accretion disk collapsed, forming giant worlds. In any case, each Goliath was probably surrounded by its own small accretion disk. This formed the amazingly powerful moons of the giant planets.

New activity on the most mysterious variable star in the sky. Tabby's Star became famous for its strong and irregular fluctuations in brightness, which still remain unexplained. Something, she concludes, is rotating the star and eclipsing it at irregular intervals.

The main suspects are dust clouds, comet debris or similar natural objects. Either way, it appears to be an extremely rare event, Tabby's star being the only one of its kind, although today's coverups are occurring almost daily thanks to the search for exoplanets. Exotic are some of the sentences used to explain his behavior. Some experts suspect that it simply swallowed one of its planets; others have pinpointed the passing dust disk of a neutron star as the cause.

However, the Green Bank telescope's eavesdropping campaign has produced no direct evidence of intelligent life. Most likely, at present this is a more prosaic explanation. Accordingly, between us and the star there is an interstellar molecular cloud, which is quite strongly structured inside. After all, this suggests that the star has clearly lost its brightness over the past 100 years. This would mean that the star's strange light curve simply represents very dense clumps of dust in a small cloud that happened to come into view during Kepler's observations.

But no one does this. "I think it's very likely that we haven't heard the right explanation," says astronomer Jason Wright, lead author. Astronomer Felix Hormuth discovered several hundred small planets and is now named after actress Martina Gedek. But naming celestial bodies is not as simple as some companies on the Internet would like you to believe. You can't buy names.

What to name a celestial body

An astronomer from the Max Planck Institute in Heidelberg managed to suggest a name for the celestial body he discovered and decided in favor of the actress. Often a small planet receives the names of people. Hormuth discovered two celestial bodies at the German-Spanish Observatory. But the purpose of celestial bodies is more complex than it seems: only the International Astronomical Union, based in Paris, is responsible for this. Naming guidelines are strict, and all proposals are vetted by a committee. In the case of minor planets, the discoverer has ten years to submit a name proposal.

It should be no longer than 16 characters, ideally consist of one word, and not be offensive or resemble the name of an already named celestial body. If a celestial body should receive the name of a person or political or military event, at least 100 years have passed since the date of death or event.

Because it is impossible to help with money. Some bright stars, such as those in the Orion constellation, have old names that come from Arabic. Most stars, star clusters and galaxies have only one catalog number. However, sometimes the opportunity arises to participate in the naming of celestial bodies.

For Charon there were fictitious explorers and travelers, fictitious places and destinations, and fictitious ships and spaceships. And the imagination of the participants knew no bounds. The first climbers of Mount Everest, Edmund Hillary and Tenzing Norgay, were also immortalized on the surface of Pluto. Another crater is named after Darth Vader from Star Wars" The names for twenty minor planets discovered by astronomer Felix Hormuth have already been approved. It was named by the Hormuths' colleagues because "naming a small planet by itself is not allowed," as Hormuth explains. “Such a proposal will be immediately rejected by the review committee.”

The official rules don't say anything against the proposed name, so he should soon give a small planet named "Iggy Pop." This is a set of celestial bodies, nebulae and intermediate spaces. The millions of stars that are seen in the sky are part of the Milky Way or the Galaxy to which our Sun belongs. It is shaped like a biconvex lens, about a thousand light years in diameter and about a thousand light years thick.

Stars form constellations. Stars and nebulae belong to galaxies. There are many millions of star systems called island universes or spirals. Galaxies join hypergalaxies. And there is cosmic radiation, still of uncertain nature, but it is known that it has its origin neither in the sun nor in the stars and that it seems to emanate from all regions of space.

In the Milky Way there are a series of celestial bodies that move around the Sun, among them there are nine great planets that revolve with their satellites, the smaller planets. Asteroids, comets, dust and interstellar gas are also part of this system. They have an almost spherical shape, like a ball, slightly flattened at the poles. They revolve around the Sun on specific paths called orbits. Its size and composition vary from one to another. Our planet, Earth, is the only one that contains life as we know it.

It is called any object that orbits a planet. Typically, the satellite is much smaller than the planet and accompanies it on its path around the star as it rotates. These are a series of rocky or metallic objects that move around the Sun, most in the main belt, which lie between Mars and Jupiter.

However, some asteroids have orbits that extend beyond Saturn, others are closer to the Sun than Earth. Even some of them crashed into our planet. When they manage to enter the atmosphere, they ignite and turn into meteorites. Depending on their size, asteroids are also called minor planets. The largest of them is Ceres with a diameter of 000 km.

Comets are celestial bodies, formed by ice and rocks that revolve around the Sun, following various elliptical, parabolic or hyperbolic trajectories. Comets, along with asteroids, planets and moons, are part of the solar system.

Although most of the space we can observe is empty, it is inevitable that we look at those small moments that shine. It's not that empty space isn't interesting. Stars just attract attention. Due to gravitational attraction, the question of stars tends to concentrate at its center. But this leads to an increase in its temperature and pressure. Within certain limits, this increase causes nuclear reactions that release energy and balance the force of gravity, so that the size of the star remains more or less stable for some time, emitting large amounts of radiation into space, including, of course, luminous radiation.

The universe is formed by a collection of celestial bodies along with the empty space that separates and surrounds them. The most famous of these bodies are stars. Stars are not isolated in the universe, but form groups. These groups are known as galaxies. Other bodies that populate the Universe and are best known for being in our Solar System are planets, comets, satellites, meteorites, asteroids and lesser known nebulae and cosmic dust among others.

Stars are balls of hot and glowing gas in constant explosion. Most stars contain two main gases: hydrogen and helium, so they have their own light and heat that they radiate into space. The brightness of a star depends on its brightness and distance from Earth. Due to the enormous distance that separates them from the Earth, they are perceived as luminous points. They have different sizes, for example, less and much bigger than the sun, the closest star to Earth. The stars have life cycle which lasts hundreds or thousands of millions of years.

Galaxies are sets of stars that take the form of a disk with a central core in which the stars are closer together. The galaxy may contain more than one hundred billion stars. Planets are solid bodies that revolve around the Sun or any other star and do not have their own light. There are nine planets in our solar system, which are divided into two groups: Mercury, Venus, Earth, Mars and Pluto, which are formed by rocks, while others: Jupiter, Saturn, Uranus and Neptune are formed by liquefied gas.

Comets - snowballs and dust. Millions of them are in orbit around the Sun; when they pass close to it, they heat up and the snow turns to gas, leaving behind a long, bright tail that can be millions of kilometers long. Nebulae are clouds of gas and dust that are found among stars. The gases that form them are hydrogen, helium, water molecules and, in smaller quantities, nitrogen, oxygen and carbon. Some nebulae are formed as a result of an explosion of very bright stars, called new.

Satellites are celestial bodies that rotate on their own axis when they orbit the planets and accompany them in their movements, i.e. movements around the Sun. Every planet has one or more satellites, with the exception of Mercury. The Moon is a natural satellite of the Earth and is close to a quarter its size. There are also artificial satellites, which, as the name suggests, are mechanical devices developed by man and have two main purposes: military and scientific.

Meteorites are fragments solid, much smaller than asteroids, and which revolve around the Sun in elliptical orbits. Due to gravity, many of these meteors fall to the Earth's surface, and the trails of light they leave behind as they fall are what we know as meteor showers; some disintegrate as they fall because they are burned by being rubbed by the atmosphere, others come in whole fragments. Meteorites are formed by dust and particles ejected by comets as they pass close to the Sun.