What is Double Star Planet ? Are stars planets?

If we look at the starry sky with a telescope, we can often see some stars leaning together in pairs. Of course, a lot of this is just the result of perspective, and in fact the two stars are far apart, just in the same direction of sight. However, astronomers have found that in a significant proportion, there is a strong connection between the two stars, orbiting each other.

These two stars are called binary stars.

The two stars that make up a binary star are called the children of the binary star. The brighter of them is called the main star; The fainter one, called the companion star. The brightness of the host star and the companion star are not much different, and some are very different.

There are many binary stars, so close to each other that even the largest modern telescopes cannot distinguish their two substars. However, astronomers can find that they are composed of two stars. Such a double star is called a spectroscopic double star.

Therefore, the double star mentioned above can be distinguished by a telescope, which is correspondingly called a visual double star.

Some binary stars will have a phenomenon similar to a solar eclipse when they orbit each other, so that the brightness of such binary stars changes periodically. Such a double star is called an eclipse binary star or eclipse variable star. Eclipse binaries are generally spectroscopic binaries.

There are also binary stars that are not only very close to each other, but also have matter flowing from one substar to another, such binary stars are called close binary stars. Some are close to binary stars, and when matter flows, they emit X-rays, which are called X-ray binary stars.

In the Milky Way, the number of double stars is very high, estimated to be no less than a single star. The study of binary stars is not only of great significance for understanding the diversity of star formation and evolution processes, but also for understanding the formation and evolution of the Milky Way.

The two planets move in different orbits around a midpoint due to their centripetal force towards each other.

Stars don't have to be planets, and if they're asteroids, like space meteorites, they can't be considered planets.

Stars refer to celestial bodies in the universe that are visible to the naked eye. The activity of the energy inside the star makes the star irregularly shaped. Stars can be broadly divided into planets, stars, comets, white dwarfs, etc.

The brightness of a star is often expressed in terms of magnitude. The brighter the star, the smaller the magnitude. The brightest planet is Venus, the fastest star orbiting at more than 2.4 million kilometers per hour, and H1504+65 is the hottest white dwarf.

The best of the stars

1. The brightest planet.

On Earth, five planets can be seen with the naked eye, the brightest of which is Venus. Venus, although far less bright than the Sun and Moon, is 14 times brighter than the famous Sirius (the brightest star in the whole day except the Sun), like a dazzling diamond.

2. The most beautiful galaxy.

Stars are synonymous with romance. At the edge of the Milky Way, 30,000 light-years from Earth, there are two huge galaxies that stage "tango". These two galaxies are made up of billions of stars and clouds of gas, both in a spiral shape.

The stars, gas, and dust of the larger galaxy on the right form an "arm" that surrounds the smaller galaxy on the left, slowly performing graceful dances as they interact.

1. In the night sky, most of the "bright spots" that can be seen by the naked eye are stars.

There are several planets, all of which are large planets or near-Earth planets in the solar system. You should be able to see artificial satellites and occasionally meteors. The moon is just a satellite of the Earth.

2. Astronomical telescopes do not currently see aliens or UFOs.

Although many people have always claimed to have witnessed aliens visiting the earth and even having contact with themselves, most scholars and experts believe that the so-called different degrees of contact between human beings and aliens are actually psychological effects, and the chances of human beings discovering "aliens" are very small, even if they find the existence of aliens, it is almost difficult to have any contact with them.

Question 1: Is the star next to the star in the sky a planet The slower the time around him and the inside. Because our world is changing all the time, and even if we don't do anything, time is still passing away, because we follow the world's time.

Question 2: Are all stars planets? First of all, I don't know how you define the planet. Secondly, I don't know what the difference is between the stars and the stars in your eyes ...

In the night sky, most of the "bright spots" that can be seen with the naked eye (I originally wanted to use "stars", but I am afraid you will misunderstand them again) are stars. There are several planets (it seems to be five, I can't remember exactly), all of which are large planets or near-Earth planets in the solar system. You should be able to see artificial satellites and occasionally meteors.

The moon is just a satellite of the Earth.

Theoretically, aliens are supposed to exist, but until now, they have not been discovered

It's possible to see a UFO, because UFO stands for Unidentified Flying Object, and you can call it UFO when the chicken wants it to fall and you don't know what it's about.

If you want to see aliens ... Well, that's up to you.

The final piece of advice: if you don't have a lot of money and want to use it to light a fire, it seems that there is no need to buy the 4000 telescope. Moreover, no matter how you look at it, it is unlikely that an optical telescope will be able to see a large sky man on the moon.

Not to mention the farther planets, and of course if you're an avid astronomer, I can't help it. You can take care of yourself

Question 3: Is every star in the sky a planet Yes, but except for artificial satellites, everything else is a celestial body, but some are planets, some are stars, and the stars themselves emit light, but the planets are like the moon by reflecting the light of the stars, so that we can find it with the naked eye.

Question 4: Is each star a planet? Not necessarily, some are a galaxy, some are nebulae, etc., because they are so far away, they look like a star.

According to Xinhua News Agency.

In the past two days, whenever the sun goes down in the west and the sky is slightly dark, two bright stars appear in the southwest sky, dotting the sky with remnants.

These two bright stars are Venus and Jupiter. Right now, Venus is catching up with Jupiter, and on December 1, the conjunction will amaze the heavens.

Zhao Zhiheng, director of the Tianjin Astronomical Society, said that the one on the upper left is Jupiter, and the one on the lower right is Venus. Venus is especially bright, our country called it "Taibai" in ancient times, and Westerners called it "Venus". It's bright for two reasons:

First, it is relatively close to the earth, and it is the closest among the planets in the solar system. The second is because it has thick clouds floating on its surface and has a high albetry rate.

Jupiter is the largest planet in the solar system, with dense clouds on its surface and a relatively high albedo. According to astronomical experts, the two stars are currently in the constellation Sagittarius. Although orbiting the Sun in an easterly direction at the same time, Venus moves fast and Jupiter moves slowly, which creates a situation where Venus chases Jupiter.

If you look at dusk** every day, you will find that Venus and Jupiter are getting closer to each other. By the evening of December 1, Venus will catch up with Jupiter, and the two will be conjunct at a distance of only 2 degrees. At this time, a crescent moon in the western sky also came to have fun, forming a celestial beauty of the double star arching moon.

Two stars for Caster and Pollux.

A star system in which two stars are close to each other and orbit each other is called a binary star. The two substars in the binary star system often have different shades of 0 degrees and colors, just like pearls in the sea of stars.

There are many types of double stars. Some of them are stars moving around another star and have a gravitational relationship with each other, which is called a physical binary; Some binary stars are only projectional, which seem to be very close, but in fact they are far apart and have no physical connection, which is called optical binary stars. A binary star system that can only be seen through an astronomical telescope is called a visual binary star; Binary star systems that can only be resolved by analyzing changes in spectral lines are called spectroscopic binary stars.

If you look at the starry sky with an astronomical telescope, you will find that there are many stars in the sky that are in pairs, and they are very close to each other, which seems very "intimate". We call two stars that are in close proximity to each other binary. It can be said that the stars in the sky also like to be in pairs, and the "singles" do not have an advantage.

Of course, the same double star, the situation is also different. Some stars orbit another star and rely on gravitational attraction to maintain each other, which is called a physical binary; Some binary stars are only projectional, which seem to be very close, but in fact they are far apart, and there is no physical connection.

When we usually refer to binary stars, we mean physical binary stars. For different physical binary stars, the distance between their two substars can also vary greatly. For example, there is a kind of "close binary star", two substars are very close to each other, which can be regarded as the "iron and wild buddies" of the star world, and some complex interaction processes can occur between them, resulting in tidal effects, and even the phenomenon of gaseous matter flowing from one substar to another.

There are many famous double stars in the night sky. For example, Sirius, the South Gate.

Second, the South River. 3. Beihe.

2. Antares. Second, the first class of the horns are double stars. Among them, Sirius is also a visual binary, that is, their binary relationship can only be seen through astronomical telescopes.

The companion star orbiting Sirius is a white dwarf. "Navedea" is a spectroscopic binary star, that is, they can only be confirmed by analyzing the changes in spectral lines, and they cannot be distinguished by visual observation with a telescope.