A small message about the planet of the solar system. Planets of the Earth Group (Mercury, Venus, Earth, Mars)

Our "house" is a solar system, which refers to the galaxy called the Milky Way. The solar system consists of a large bright star - the sun, which holds the gravity forces around him all around: planets, their satellites, comets, asteroids, cosmic gas and dust. Consider more planets Solar system.

Opens a list of planets of the solar system of Mercury, which is closest to the sun and rotates around it much faster than its neighbors. In addition, Mercury is the smallest of all planets. The surface of it resembles the rocky desert.

IN daytime On Mercury is hotter than in the warmest point of the Earth several times. But with the arrival of the night, the temperature drops sharply, dropping below the zero mark. This is due to the fact that Mercury has no atmosphere, and the heat is not delay there.

Fig. 1. Mercury.

Venus

Venus is largely reminiscent of the Earth, but its atmosphere is very different from earthly: it consists of a poisonous carbon dioxide. In addition, the atmosphere on the planet is so dense, which is easily holding heat, and therefore it is very hot here. Venus is the brightest planet of the solar system, which rotates in the opposite direction. If it is on its surface, then admire the sunrise will not have to be in the east, but in the West.

Earth is a unique planet of the solar system, since only it has a life. And all due to the fact that the planet is suitable for breathing atmosphere, the world ocean, rich vegetation. In addition, the land is located smoothly so that sunlight Gave the heat, but did not burn everything on the surface. The earth has a natural satellite - the moon.

Fig. 2. Earth.

Mars

This planet is more like the rest similar to Earth. That is why for a long time it was believed that there is life here. However, after a careful study of the planet, it turned out that it was not. The surface of Mars resembles a desert with numerous channels and craters. There are also very high mountains. The upper layers contain a lot of iron, which gives the surface a reddish tint. Mars has 2 satellites.

Jupiter

The size of this planet amazed imagination: Jupiter is so great that all the planets would easily fit inside it. Due to the fact that he spokes up very quickly, his middle part slightly protrudes, and the planet looks like a flat ball.

Jupiter - Recordsman not only in size, but also by the number of satellites. 63 satellites rotate around the planet-giant, four of whom were open in 1610 the Great Galileo Galileem.

The second largest planet, which has distinctive feature - Beautiful glowing rings consisting of billions of stone and ice particles. The main components of the planet are hydrogen and helium, so that it is the easiest of all planets. This means that if there was a huge ocean, Saturn could swim in it freely. The planet has 7 satellites.

Fig. 3. Saturn.

Uranus

Since the planet is at a high distance from the sun, it is very cold on it. main feature Uranus is his way of rotation: the planet rotates, as if lying on the side. She has rings like Saturn, but not so bright. It has 5 main satellites.

Neptune

Neptune is a twin brother of uranium, only less in size. Here, tissue frosts, which is difficult to imagine: on the surface of the Neptune, the temperature is -200c. This is the first planet that has not been discovered by observation, but is calculated by mathematical. Because of the great remoteness from the Earth, Neptune was examined by only one spacecraft almost 20 years ago. Has 14 satellites.

What did we know?

When studying the program of the surrounding world of 3-5 class, we learned which planets are included in the solar system, as they are located, and what characteristics do it possess. We learned that the only planet on which there is life is our land.

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This is a system of planets, in the center of which is a bright star, the source of energy, heat and light is the sun.
According to one of theories, the Sun was formed together with the solar system of about 4.5 billion years ago as a result of an explosion of one or several supernovae. Initially, the solar system was a cloud of gas and dust particles, which in motion and under the influence of their mass formed a disc in which a new star arose and our entire solar system.

In the center of the Solar System is the sun, around which nine large planets rotate in orbits. Since the sun is shifted from the center of planetary orbits, then behind the turnover cycle around the sun, the planet is approaching, they are moving away in their orbits.

Distinguish two groups of planets:

Planets of the earth group: and . These planets are small with a stony surface, they are closer to others to the sun.

Planets Giants: and . These are large planets consisting mainly of gas and they are characterized by the presence of rings consisting of ice dust and many rocky pieces.

And here It does not fall into any group, because, despite its stay in the solar system, too far away from the Sun and has a very small diameter, only 2320 km, which is two times less than the diameter of Mercury.

Planets of the Solar System

Let's start a fascinating acquaintance with the planets of the solar system in order of their location from the Sun, as well as consider their main satellites and some other space objects (comets, asteroids, meteorites) in the giant expanses of our planetary system.

Jupiter rings and satellites: Europe, Io, Gamornad, Callisto and others ...
The planet Jupiter surrounds a whole family of 16 satellites, and each of them has its own, unlike other features ...

Rings and satellites Saturn: Titan, Enceladud and others ...
The characteristic rings are not only in the planet Saturn, but also on other planet giants. The rings around Saturn is particularly clearly visible, because consist of billion of small particles that rotate around the planet, in addition to several rings, Saturn has 18 satellites, one of which is Titan, its diameter is 5000km, which makes it the largest satellite of the solar system ...

Rings and satellites uranium: Titania, Oberon and others ...
The planet uranium has 17 satellites and, like other giant planets, slimming thin rings, which practically do not have the ability to reflect the light, so they were open not so long ago in 1977, quite by chance ...

Neptune Rings and Satellites: Triton, Neretide and others ...
Initially, before the study of Neptune, the Voyager-2 spacecraft was known about two satellites of the planet - Triton and Nerida. An interesting fact that Satellite Triton has the opposite direction of the orbital movement, strange volcanoes were found on the satellite, which mescause gas nitrogen, as if geysers, the spreading lot of dark color (from liquid state to par) a lot of kilometers into the atmosphere. During his mission "Voyager-2" discovered six more satellites of the planet Neptune ...

The solar system is a group of planets rotating in certain orbits around a bright star - the Sun. This shine is the main source of heat and light in the solar system.

It is believed that our Planet System was formed as a result of an explosion of one or several stars and it happened about 4.5 billion years ago. Initially, the solar system was an accumulation of gas and dust particles, however, with time and under the influence of its own mass, the sun and other planets appeared.

Planets of the Solar System

In the center of the Solar System is the sun, around which eight planets are moving around in its orbits: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Until 2006, Pluto belongs to this group of planets, he was considered the 9th planet from the Sun, however, because of its significant remoteness from the sun and small sizes, it was excluded from this list and is named the planet-dwarf. Rather, it is one of several dwarf planets in the Belt of the Kuiper.

All the above planets are customary to divide into two large groups: Earth group and gas giants.

The earth group includes planets such as: Mercury, Venus, Earth, Mars. They differ in small sizes and rocky surface, and in addition, are closer than the rest to the sun.

Gaza giants include: Jupiter, Saturn, Uranus, Neptune. They are characterized by large sizes and the presence of rings, which are ice dust and rocky pieces. These planets are mainly made of gas.

Mercury

This planet is one of the smallest in the solar system, its diameter is 4,879 km. In addition, it is closer to the sun. Such a neighborhood predetermined a significant difference in temperatures. The average temperature on Mercury during the daytime is +350 degrees Celsius, and at night - -170 degrees.

Mercury first planet from the sun.
On Mercury there are no seasons of the year. The tilt of the planet's axis is almost perpendicular to the plane of the orbit planet around the sun.
The temperature on the surface of Mercury is not the highest, although there is a planet closest to the sun. He gave the first place to Venus.
The first research apparatus visiting Mercury was Mariner 10. He conducted a series of demonstration spans in 1974.
Day on Mercury lasts 59 terrestrial days, and the year is only 88 days.
On Mercury, the sharpest temperature differences are observed, which reach 610 ° C. In the afternoon, the temperature can reach 430 ° C, and at night -180 ° C.
The strength of gravity on the surface of the planet is only 38% of the earth. This means that on Mercury you could bounce three times higher, and it would be easier to raise heavy objects.
The first observations of Mercury in the telescope carried out Galileo Galilee at the beginning of the 17th century.
Mercury has no natural satellites.
The first official map of the Mercury surface was published only in 2009, thanks to the data obtained from the spacecraft Mariner 10 and Messenger.

Venus

This planet second from the sun. According to its size, it is close to the diameter of the Earth, the diameter is 12 104 km. For all other indicators, Venus differs significantly from our planet. Day here lasts 243 terrestrial days, and year - 255 days. The atmosphere of Venus by 95% consists of carbon dioxide, which creates a greenhouse effect on its surface. This leads to the fact that the average temperature on the planet is 475 degrees Celsius. The atmosphere also includes 5% nitrogen and 0.1% oxygen.

Venus is the second planet from the sun in the solar system.
Venus is the hottest planet in the solar system, although it is the second planet from the sun. Surface temperature can reach 475 ° C.
The first spacecraft sent to the examination of Venus was sent from the ground on February 12, 1961 and was called Venus-1.
Venus is one of two planets, the direction of rotation of which around its axis differs from most planets in the solar system.
The orbit of the planet rotation around the sun is very close to circular.
The daily and night temperature of the Venus surface is practically no different due to the high heat inertia of the atmosphere.
One revolution around the Sun Venus is doing for 225 terrestrial days, and one turn around its axis for 243 terrestrial days, that is, one day on Venus lasts more than one year.
The first observations of Venus in the telescope carried out Galileo Galilee at the beginning of the 17th century.
Venus has no natural satellites.
Venus is the third in the brightness object on the sky, after the sun and the moon.

Land

Our planet is at a distance of 150 million km from the Sun and this allows you to create a temperature on its surface suitable for the existence of water in a liquid form, and it means to appear life.

Its surface is 70% covered with water, and it is the only one of the planets on which there is such a liquid. It is believed that many thousand years ago contained in the atmosphere of pairs created on the surface of the earth the temperature necessary for the formation of water in liquid form, and solar radiation contributed to the photosynthesis and life of life on the planet.

The land in the solar system is the third planet from the Sunsbut;
Around our planet rotates one natural satellite - the moon;
Earth is the only planet that is called not in honor of the Divine Being;
The density of the Earth is the largest of all planets in the solar system;
The speed of rotation of the Earth is gradually slowed down;
The average distance from the Earth to the Sun is 1 astronomical unit (the conditional measure is long in astronomy), which is approximately 150 million km.;
Earth has magnetic field sufficient strength to protect the living organisms on its surface from destructive solar radiation;
The first artificial satellite of the Earth called PS-1 (the simplest satellite - 1) was launched from the Baikonur cosmodrome on the satellite RN on October 4, 1957;
In orbit around the earth, compared to other planets, is the most a large number of spacecraft;
The earth is the largest planet of the earth group in the solar system;

Mars

This planet is the fourth on the account of the Sun and removed from it for a distance of 1.5 times more than the Earth. The diameter of Mars is less terrestrial and is 6,779 km. The average air temperature on the planet varies from -155 degrees, up to +20 degrees in the equator area. The magnetic field on Mars is much weaker than that of the Earth, and the atmosphere is quite discharged, which allows unhindered solar radiation to affect the surface. In this regard, if there is life on Mars, it is not on the surface.

During the examination with the help of mercts, it was found that there are many mountains on Mars, as well as dried river beds and glaciers. The surface of the planet is covered with red sand. This color Mars gives iron oxide.

Mars is located on the fourth orbit from the Sun;
On the red planet there is the highest volcano in the solar system;
Of the 40 research missions sent to Mars, only 18 were successful;
Mars occurs the largest dust storms in the solar system;
After 30-50 million years, the rings system will be located around Mars, like Saturn;
The fragments of Mars were found on Earth;
The sun from the surface of Mars looks two times less than from the surface of the earth;
Mars is the only planet in the solar system, which has polar ice;
Ok Mars rotates two natural satellite -Demos and phobos;
Mars does not have a magnetic field;

Jupiter

This planet is the largest in the solar system and has a diameter of 139,822 km, which is 19 times more terrestrial. Day for Jupiter last 10 hours, and the year is approximately 12 Earth years. Jupiter mainly consists of xenon, Argon and Crypton. If it were 60 times more, it could become a star due to the spontaneous thermonuclear reaction.

The average temperature on the planet is -150 degrees Celsius. The atmosphere consists of hydrogen and helium. Oxygen and water on its surface is not. There is an assumption that in the atmosphere of Jupiter there are ice.

Jupiter is located on the fifth orbit from the Sun;
On the earth's sky, Jupiter is the fourth in the brightness of the object, after the sun, the moon and Venus;
Jupiter is the shortest day of all the planets of the solar system;
In the atmosphere of Jupiter, it rages one of the longest and powerful storms in the solar system, better known as a large red stain;
Moon of Jupiter - Ganymed, is the largest moon in the solar system;
Around Jupiter is a thin rings system;
Jupiter visited 8 scientific and research apparatus;
Jupiter has a strong magnetic field;
If Jupiter was 80 times more massive, he would become a star;
Around Jupiter rotates 67 natural satellites. This is the largest indicator in the solar system;

Saturn

This planet is second in size in the solar system. Its diameter is 116,464 km. It is most similar in its composition with the sun. The year on this planet lasts for quite a long time, almost 30 terrestrial years, and the day is 10.5 hours. The average temperature on the surface is -180 degrees.

Its atmosphere consists mainly of hydrogen and a small amount of helium. In her upper layers Frequency and polar radiances often arise.

Saturn is the sixth planet from the sun;
In the atmosphere of Saturn, the strongest winds are blowing in the solar system;
Saturn is one of the least dense planets in the solar system;
Around the planet is the largest rings in the solar system;
One day on the planet lasts almost one earthly year and are equal to 378 Earth days;
Saturn visited 4 research spacecraft;
Saturn, together with Jupiter, account for approximately 92% of the entire planetary mass of the solar system;
One year on the planet lasts 29.5 Earth years;
62 famous natural satellites rotates around the planet;
Currently, the study of Saturn and his rings is engaged in the Cassini automatic interplanetary station;

Uranus

Uranus, Computer Artwork.

Uranus is the third to the size of the planet in the solar system and the seventh of the Sun. It has a diameter of 50,724 km. It is also called the "Ice Planet", since the temperature on its surface is -224 degrees. The day in uranium lasts 17 hours, and the year - 84 of the Earth years. At the same time, the summer lasts as much as winter - 42 years. That a natural phenomenon It is due to the fact that the axis of that planet is at an angle of 90 degrees to the orbit and it turns out that uranium, as it were, "lies on the side."

Uranus is located on the seventh orbit from the Sun;
The first who learned about the existence of uranium became William Herschel in 1781;
Uranus visited only one spacecraft - Voyager 2 in 1982;
Uranus is the coldest planet in the solar system;
The plane of the uranium equator is tilted to the plane of its orbit almost at right angles - that is, the planet rotates retrogradi, "the lying on the side is slightly head down";
Uranium's moon wear titles taken from the works of William Shakespeare and Alexander Porup, and not Greek or Roman mythology;
A day in uranium lasts about 17 terrestrial hours;
Around the uranium there are 13 famous rings;
One year in uranium lasts 84 Earth years;
Around the uranium rotates 27 well-known natural satellites;

Neptune

Neptune - the eighth planet from the sun. In its composition and sizes, he is similar to Uranium's neighbor. The diameter of this planet is 49,244 km. The day at Neptune lasts 16 hours, and the year is 164 Earth years. Neptune refers to ice giants and for a long time it was believed that no weather events occur on its ice surface. However, it was recently found that on Neptune, a busy vortex and wind speed is the highest of the planets of the solar system. It reaches 700 km / h.

Neptune has 14 satellites, the most famous of which is Triton. It is known that it has its own atmosphere.

Neptune also has rings. This planet has 6.

Neptune is the most remote planet in the solar system and takes the eighth orbit from the Sun;
The first on the existence of Neptune recognized mathematicians;
There are 14 satellites around Neptune;
The orbit is not removed from the sun on average at 30 AE;
One day on Neptune lasts 16 terrestrial hours;
Neptune visited only one spacecraft - Voyager 2;
Around Neptune there is a rings system;
Neptune has a second largest gravity force after Jupiter;
One year at Neptune lasts 164 Earth years;
The atmosphere on Neptune is extremely active;

Jupiter is considered the largest planet of the solar system.
In the solar system there are 5 dwarf planets, one of which retrained to Pluto.
Very little in the solar system asteroids.
Venus is the hottest planet of the solar system.
About 99% of the place (by volume) takes the sun in the solar system.
One of the most beautiful and original places of the solar system is considered Saturn Saturn. There you can see a huge concentration of ethane and liquid methane.
Our solar system has a tail resembling a four-leaf clover.
The sun should be a continuous 11-year cycle.
In the solar system there are 8 planets.
Fully formed solar system due to a large gas-pepped cloud.
Spacecraft flew to all planets of the solar system.
Venus is the only planet of the solar system that rotates counterclockwise around its axis.
Uranus has 27 satellites.
The biggest mountain is on Mars.
A huge mass of the solar system facilities fell in the sun.
The solar system is located in the Milky Way Galaxy.
The sun is the central object of the solar system.
Often the solar system is divided into regions.
The sun is a key component of the solar system.
Approximately 4.5 billion years has been formed a solar system.
The most distant planet of the solar system is Pluto.
Two areas in the solar system are filled with small bodies.
The solar system is built contrary to all the laws of the universe.
If you compare the soy system and space, then it is just the sand in it.
Over the past few centuries, the solar system has lost 2 planets: Volcano and Pluto.
Researchers assure that the solar system was created artificially.
The only satellite of the solar system, which has a dense atmosphere and the surface of which will not be able to see due to cloud cover - titanium.
The region of the solar system, which is behind the orbit of Neptune is called a hiding belt.
The Oorta cloud is called the area of \u200b\u200bthe solar system, which serves as the source of the comet and the long period of appeal.
Each object of the solar system holds there due to the force of attraction.
The leading theory of the solar system involves the appearance of planets and satellites from a huge cloud.
The solar system is considered the most secret particle of the universe.
In the solar system there is a huge belt of asteroids.
On Mars you can see the eruption of the largest volcano of the solar system, which is called Olympus.
The outskirt of the solar system is considered Pluto.
Jupiter has a large ocean of liquid water.
The moon is the largest satellite of the solar system.
The largest asteroid of the solar system is considered pallada.
The brightest planet of the solar system is Venus.
Basically the solar system consists of hydrogen.
Earth is an equal member of the solar system.
The sun heats up slowly.
Oddly enough, the most huge stocks of water in the solar system are in the sun.
The plane of the equator of each planet of the solar system is dispelled with the orbit plane.
Mars satellite titled Phobos is an anomaly of the solar system.
The solvent system may affect its own manifold and scale.
Solar system planets are influenced by the sun.
The outer shell of the solar system is considered to be satellites and gas giants.
A huge number of planetary satellites of the solar system is dead.
The largest asteroid, the diameter of which is 950 km, is called Cereter.

It is difficult to believe in it, but sometime space was completely empty. There was no planets, nor satellites, no stars. Where did you come from? How was the solar system formed? These questions many centuries worry humanity. This article will help give some idea of \u200b\u200bwhat is space and will open interesting facts about the planets of the solar system.

Where did it start

The universe is all visible and invisible space together with all existing cosmic bodies. Multiple theories of its appearance are put forward:

3. Divine intervention.Our universe is so unique, in it everything to the smallest things is thought out that she could not arise by himself. Only the great Creator to propose such a miracle to provide such a miracle. Absolutely ne. scientific theoryBut has the right to exist.

Disputes about the causes of the true occurrence of outer space continue. In fact, we have an idea of \u200b\u200bthe solar system, which includes burning shone and eight planets with their satellites, galaxies, stars, comets, black holes and much more.

Amazing discoveries or interesting facts about the planets of the solar system

Space expanses are sitting in their mystery. Each heavenly body keeps his riddle. Thanks to astronomical discoveries, valuable information about the heavenly wanderers appear.

Closest to the sun is Mercury. There is an opinion that once he was a satellite of Venus. But as a result of the space catastrophe, the cosmic body separated from Venus and acquired his own orbit. The year on Mercury lasts 88 days, and the day is 59 days.

Mercury is the only planet of the solar system on which you can observe the movement of the sun in the opposite direction. This phenomenon has a completely logical explanation. The speed of rotation of the planet around its axis is much slower than the movement in its orbit. Because of this difference in high-speed modes and the effect of changing the movement of the sun occurs.

On Mercury, you can observe a fantastic phenomenon: two sunset and sunrise. And if you move to the meridians of 0˚ and 180̊, you can witness three sunbats and sunrises per day.

Venus walks next to Mercury. It lights up in the sky during sunset on earth, but it can be observed for only a couple of hours. Because of this particular, it was called "Evening Star". It is interesting that the orbit of Venus lies inside the orbit of our planet. But moving along it in the opposite direction, counterclockwise. The year on the planet lasts 225 days, and 1 day - 243 Earth days. Venus like the moon has a shift of phases, transforming into a thin sickle, then in a wide circle. There is an assumption that in the atmosphere of Venus can live some types of earth bacteria.

Land - Truly the pearl of the solar system. Only on it there is a huge variety of life forms. People feel so comfortable on this planet and do not even realize that it bears in their orbit at a speed of 108,000 km per hour.

The fourth of the sun planet is Mars. The two satellites accompany him. The day on this planet is equal to the duration to the earth - 24 hours. But 1 year lasts 668 days. Also, how and on Earth there is a change in the seasons. Seasons cause changes in the appearance of the planet.

Jupiter - The largest cosmic giant. It has many satellites (more than 60 pieces) and 5 rings. By weight exceeds the Earth is 318 times. But, despite its impressive sizes, moves fast enough. Around your own axis is turned around in just 10 hours, but the distance around the Sun overcomes for 12 years.

Weather on Jupiter Nadvers - permanent storms and hurricanes, accompanied by lightning. A bright representative of such weather conditions is a large red spot - a whirlwind moving with a speed of 435 km / h.

Distinctive feature Saturn, Of course, their rings are. These flat formations consist of dust and ice. The thickness of the circles ranges from 10 to 15 m to 1 km, the width of 3,000 km to 300,000 km. The rings of the planet are not a single integer, but represent the formation in the form of thin spokes. Also the planet surrounds more than 62 satellites.

Saturn has an incredibly high speed of rotation, so much that it is compressed by the poles. The day on the planet lasts 10 hours, the year is 30 years.

Uranus, like Venus, moving around the shone counterclockwise. The uniqueness of the planet is that it "lies on the side", its axis is inclined at an angle of 98˚. There is a theory that such a position of the planet took after a collision with another space object.

Like Saturn, uranium has a complex ring system consisting of a set of internal and external rings. In total, uranium has 13 of them. It is believed that rings are the remains of the former satellite of uranium, who collided with the planet.

Uranium does not have a solid surface, a third of the radius, approximately 8,000 km, is a gas shell.

Neptune - The last planet of the solar system. It is surrounded by 6 dark rings. The beautiful shade of the sea wave of the planet gives methane, which is present in the atmosphere. One turnover in orbit Neptune is done in 164 years. But around his axis moves fast enough, and the day go for
16 hours. In some places, the orbit Neptune intersects with a Pluto orbit.

Neptune has a large number of satellites. Basically, they all rotate in front of the orbit of Neptune and are called internal. External satellites, accompanying the planet, there are only two.

On Neptune can be observed. However, outbreaks are too weak and arise throughout the planet, and not exclusively at the poles, like on Earth.

Once in the space expanses there were 9 planets. In this number included and Pluto.But due to a small size, the astronomical community has determined it in a row of dwarf planets (asteroids).

These are such interesting facts and amazing stories about the planets of the solar system open in the process of studying the black depths of the cosmos.

There is one simple way to remember the planet of the solar system for children. However, for adults too. It is very similar to how we remember the colors of the rainbow. All children love various counts, thanks to which the information is in memory for a long time.

D. for memorization of the planets of the solar system, we suggest you to learn with the guys a poem, which can be composed of ourselves, or take advantage of the work of A. Hight:

In order, all the planets
Write any of us:

Once - Mercury,
Two - Venus,

Three - Earth,
Four - Mars.

Five - Jupiter,
Six - Saturn,

Seven - uranium
Behind him - Neptune.

Remember again, as in childhood you remembered the colors of the rainbow. With the names of the planets, you can apply the same principle. Build the phrase, each word of which will begin with the same letter as the planet of the solar system in order of its location from the sun. For example:
we
Mercury

Meet me
Venus

Tomorrow
Land

My
Mars

Youth
Jupiter

Satellite
Saturn

Gonna fly Now
Uranus

Not long

Neptune

This is just an example, in fact you can come up with anything, if only the baby it was close in spirit, and he easily remembered all the proposal. Now, when we dealt with how it is necessary to prevent any information to children, you can go to the immediate knowledge you will teach your young astronomers.

Finally, an interesting and simple story for children about what is a solar system.

Solar system is all cosmic bodies that rotate around the Sun according to their clearly specified trajectories. These include 8 planets and their satellites (their composition is constantly changing, as some objects open, others lose their status), many comets, asteroids and meteorites.
The history of the planets
There is no definite opinion on this, there are only theories and guesses. According to the most common opinion, about 5 billion years ago, one of the clouds of the Galaxy began to shrink down to the center and formed our sun. The body formed had a huge strength of attraction, and all the particles around the particle and dust began to join and stick together in the balls (this is the current planets).

The sun is not a planet, and the star. The source of energy, life on earth.

Sun as a star and the center of the solar system
Planets in their orbits rotate around a huge star called the sun. The planets themselves do not emit any heat, and if there were no light of the sun, which they reflect, then life on Earth would never have originated. There is a certain classification of stars according to which the sun is yellow dwarf, about 5 billion years old.
Satellites Planet
The solar system does not consist only of some planets, it also includes natural satellites, among which the moon well known to us. In addition to Venus and Mercury, each planet has a certain number of satellites, today there are more than 63 more. New celestial bodies are constantly opened thanks to photographs that make automatic spacecraft. They can make even the smallest satellite with a diameter of only 10 km (Leda, Jupiter).
Characteristics of each planet of the solar system

The procession of the orbit of Mercury
1. Mercury.This planet is closer to all located to the sun, in the entire system it is considered the smallest. The surface of Mercury is solid, like all four inner planets (closer than all located to the center). It has the highest rotation speed. The day of the planet is practically lit under sunlight (+ 350˚), and at night freezes (-170˚).

2. Venus.This planet is more than others on the ground with its size, composition and brightness. But the conditions are very different. The Mosmfer Venus consists of carbon dioxide. There are always many clouds around it, which makes it difficult to observe. The entire surface of Venus is a hot rocky desert.

3. Earth- The only planet on which there is oxygen, water, therefore, life. It has an ideal location towards the Sun: close enough to get light and heat in the right amount, and far enough to not burn from rays. It has an ozone layer that protects everything alive from radiation. Planet is a house for millions of living beings. , including a person.

Earth comparison with other solar system planets

The earth has one satellite - the moon.

4. Mars.Some scientists assumed that there is a life on this planet, because it has a number of similarities with the Earth. But numerous studies did not find signs of life there. Moment is known two natural satellites of Mars: Phobos and Dimimos.

5. Jupiter- the largest planet of the solar system, 10 times superior land in diameter and 300 times in mass. It consists of jupiter from hydrogen, helium and other gases, has 16 satellites.

6. Saturn- The most interesting planet for children, as it has rings that are formed from dust, stones and ice. Around Saturn rotates three main rings, the thickness of which is about 30 meters.

7. Uranus.This planet also has rings, but it is much more complicated to see them, they are manifested only at a certain time. The main feature of uranium is its rotation manner performed in the "Lying side" mode.

8. Neptune.Astronomy today is called this planet last in the solar system. Detected Neptune only in 1989, as it is located very far from the sun. The surface of it from the space looks blue, which cannot but affect us.
Until 2006, there were 9 planets, there were still Pluto. But according to the latest scientific data, this space object has ceased to call the planet. And sorry ... Although, the children remembered easier.

astronomy Tych for Schoolchildren

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