Message on the topic of any planet in the solar system. Interesting facts about the planets of the solar system
There is one easy way to memorize the planets 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 counting rhymes, thanks to which information settles in memory for a long time.
D To memorize the planets of the solar system, we suggest that you learn a rhyme with the guys that you can compose yourself, or use the work of A. Hight:
All the planets in order
Call any of us:
Once - Mercury,
Two is Venus
Three is Earth
Four is Mars.
Five is Jupiter
Six is Saturn
Seven is Uranus
Behind him is Neptune.
Think back to remembering the colors of the rainbow as a child. With the names of the planets, the same principle can be applied. Construct a phrase, each word of which will begin with the same letter as the planet of the solar system in the order of its location from the sun. For example:
We
Mercury
Let's meet
Venus
Tomorrow
Earth
My
Mars
young
Jupiter
Companion
Saturn
Gonna fly Now
Uranus
not for long
Neptune
This is just an example, in fact, you can think of anything, as long as the baby is close in spirit, and he easily remembers the whole sentence in its entirety. Now that we have figured out exactly how to present any information to children, we can move on to the direct knowledge that you will teach your young astronomers.
Finally, an interesting and simple story for children about what the solar system is.
The solar system is all cosmic bodies that revolve around the sun according to their well-defined trajectories. These include 8 planets and their satellites (their composition is constantly changing, as some objects are discovered, others lose their status), many comets, asteroids and meteorites.
The history of the planets
There is no definite opinion on this matter, there are only theories and conjectures. According to the most common opinion, about 5 billion years ago, one of the clouds of the Galaxy began to shrink towards the center and formed our Sun. The formed body had a huge force of attraction, and all the particles of gas and dust around began to connect and stick together into balls (these are the current planets).
The sun is not a planet, but a star. A source of energy, life on Earth.
The sun as a star and the center of the solar system
The planets in their orbits revolve around a huge star called the Sun. The planets themselves do not radiate any heat, and if it were not for the light of the Sun that they reflect, then life on Earth would never have arisen. There is a certain classification of stars, according to which the Sun is a yellow dwarf, about 5 billion years old.
planetary satellites
The solar system does not consist only of planets, it also includes natural satellites, among which the Moon is well known to us. In addition to Venus and Mercury, each planet has a certain number of satellites, today there are more than 63 of them. New celestial bodies are constantly being discovered thanks to photographs taken by automatic spacecraft. They are able to detect even the smallest satellite with a diameter of only 10 km (Leda, Jupiter).
Characteristics of each planet in the solar system
Mercury Orbit Procession
1. Mercury. This planet is closest to the Sun, in the entire system it is considered the smallest. The surface of Mercury is solid, like all four inner planets (closest to the center). It has the highest rotation speed. During the day, the planet practically burns under the sun's rays (+350˚), and freezes at night (-170˚).
2. Venus. This planet is more like the Earth than others in its size, composition and brightness. But the conditions are very different. The atmosphere of Venus consists of carbon dioxide. There are always a lot of 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, and therefore life. It has an ideal location in relation to the Sun: close enough to receive light and heat in the right amount, and far enough not to burn out from the rays. It has an ozone layer that protects all life from radiation. The planet is home to millions of species of living beings including human.
Comparison of the Earth with other planets of the solar system
The Earth has one satellite - the Moon.
4. Mars. Some scientists have suggested that life also exists on this planet because it shares a number of similarities with Earth. But numerous studies have found no signs of life there. There are currently two known natural satellites of Mars: Phobos and Deimos.
5. Jupiter- the largest planet in the solar system, 10 times larger than the Earth in diameter and 300 times in mass. Jupiter consists of 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. Three main rings rotate around Saturn, the thickness of which is about 30 meters.
7. Uranus. This planet also has rings, but they are much more difficult to see, they only appear at certain times. The main feature of Uranus is its manner of rotation, performed in the "lying on its side" mode.
8. Neptune. Astronomy today calls this planet the last in the solar system. Neptune was discovered only in 1989, since it is located very far from the Sun. Its surface looks blue from space, which cannot but amaze us.
Until 2006, there were 9 planets, including Pluto. But according to the latest scientific data, this space object is no longer called a planet. It's a pity ... Although, it has become easier for children to remember.
tyts astronomy for schoolchildren
The solar system is a planetary system that includes the central star - the Sun - and all the natural objects of space revolving around it. It was formed by gravitational compression of a gas and dust cloud about 4.57 billion years ago. We will find out which planets are part of the solar system, how they are located in relation to the Sun and their brief description.
Brief information about the planets of the solar system
The number of planets in the solar system is 8, and they are classified in order of distance from the Sun:
- Inner planets or terrestrial planets- Mercury, Venus, Earth and Mars. They consist mainly of silicates and metals.
- outer planets- Jupiter, Saturn, Uranus and Neptune are the so-called gas giants. They are much more massive than the terrestrial planets. The largest planets in the solar system, Jupiter and Saturn, are composed mainly of hydrogen and helium; smaller gas giants, Uranus and Neptune, in addition to hydrogen and helium, contain methane and carbon monoxide in their atmospheres.
Rice. 1. Planets of the solar system.
The list of planets in the solar system in order from the sun is as follows: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. By listing the planets from largest to smallest, this order changes. The largest planet is Jupiter, followed by Saturn, Uranus, Neptune, Earth, Venus, Mars and finally Mercury.
All planets revolve around the Sun in the same direction as the Sun's rotation (counterclockwise as viewed from the north pole of the Sun).
Mercury has the highest angular velocity - it manages to make a complete revolution around the Sun in just 88 Earth days. And for the most distant planet - Neptune - the period of revolution is 165 Earth years.
Most of the planets rotate around their axis in the same direction as they revolve around the Sun. The exceptions are Venus and Uranus, and Uranus rotates almost "lying on its side" (axis tilt is about 90 degrees).
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Table. The sequence of the planets in the solar system and their features.
|
Planet |
Distance from the Sun |
Period of circulation |
Rotation period |
Diameter, km. |
Number of satellites |
Density g / cu. cm. |
|
Mercury |
||||||
Terrestrial planets (inner planets)
The four planets closest to the Sun consist mainly of heavy elements, have a small number of satellites, and have no rings. They are largely composed of refractory minerals such as silicates that form their mantle and crust, and metals such as iron and nickel that form their core. Three of these planets - Venus, Earth and Mars - have an atmosphere.
- Mercury- is the closest planet to the Sun and the smallest planet in the system. The planet has no satellites.
- Venus- is close in size to the Earth and, like the Earth, has a thick silicate shell around the iron core and atmosphere (because of this, Venus is often called the "sister" of the Earth). However, the amount of water on Venus is much less than on Earth, and its atmosphere is 90 times denser. Venus has no satellites.
Venus is the hottest planet in our system, with surface temperatures exceeding 400 degrees Celsius. The most likely reason for such a high temperature is the greenhouse effect due to the dense atmosphere rich in carbon dioxide.
Rice. 2. Venus is the hottest planet in the solar system
- Earth- is the largest and densest of the terrestrial planets. The question of whether life exists anywhere other than Earth remains open. Among the terrestrial planets, the Earth is unique (primarily due to the hydrosphere). Earth's atmosphere is radically different from the atmospheres of other planets - it contains free oxygen. The Earth has one natural satellite - the Moon, the only large satellite of the planets of the terrestrial group of the solar system.
- Mars smaller than Earth and Venus. It has an atmosphere composed mainly of carbon dioxide. On its surface there are volcanoes, the largest of which, Olympus, exceeds the size of all terrestrial volcanoes, reaching a height of 21.2 km.
Outer region of the solar system
The outer region of the solar system is the location of the gas giants and their satellites.
- Jupiter- has a mass of 318 times more than the earth, and 2.5 times more massive than all the other planets combined. It consists mainly of hydrogen and helium. Jupiter has 67 moons.
- Saturn- known for its extensive ring system, it is the least dense planet in the solar system (its average density is less than that of water). Saturn has 62 moons.
Rice. 3. Planet Saturn.
- Uranus- the seventh planet from the Sun is the lightest of the giant planets. What makes it unique among other planets is that it rotates "lying on its side": the inclination of its axis of rotation to the plane of the ecliptic is approximately 98 degrees. Uranus has 27 moons.
- Neptune is the last planet in the solar system. Although slightly smaller than Uranus, it is more massive and therefore denser. Neptune has 14 known moons.
What have we learned?
One of the interesting topics of astronomy is the structure of the solar system. We learned what names of the planets of the solar system are, in what order they are located in relation to the Sun, what are their distinctive features and brief characteristics. This information is so interesting and informative that it will be useful even for children in grade 4.
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PLANETSIn ancient times, people knew only five planets: Mercury, Venus, Mars, Jupiter and Saturn, only they can be seen with the naked eye.
Uranus, Neptune and Pluto were discovered with telescopes in 1781, 1846 and 1930. For a long time, astronomers studied the planets by observing them from Earth. They determined that all the planets, except Pluto, move in circular orbits in the same plane and in the same direction, calculated the size of the planets and their distances from the Sun, formed their own idea of the structure of the planets, even suggested that Venus and Mars could be similar to Earth, and there may be life on them.
The launch of automatic space stations to the planets made it possible to significantly expand, and in many respects to revise, ideas about the planets: it became possible to see photographs of the surface, to explore the soil and atmosphere of the planets.
Mercury.
Mercury is a small planet, slightly larger than the Moon. Its surface is also littered with meteorite impact craters. No geological processes have erased these dents from his face. Inside Mercury is cold. Around the Sun, it moves faster than other planets, and around its axis very slowly. Having circled the Sun twice, Mercury only has time to turn around its axis three times. Because of this, the temperature on the sunny side of the planet exceeds 300 degrees, and on the unlit side, darkness and severe cold reign. Mercury has almost no atmosphere.
Venus.
Exploring Venus is not easy. It is enveloped in a thick layer of clouds, and under this serene exterior hides a real hell, the pressure exceeds the earth's by a hundred times, the temperature on the surface is about 500 degrees, which is caused by the "greenhouse effect". The Soviet automatic station "Venera - 9" for the first time managed to transmit to Earth images of a surface filled with lava and covered with stones. Under the conditions of Venus, the apparatus lowered to the surface of the planet quickly fails, so American scientists decided to obtain data on the relief of the planet in a different way.
The automatic station "Magellan", flying around Venus many times, probed the planet with a radar, as a result, a comprehensive picture of the surface was obtained. In some places, the relief of Venus is similar to the earth, but, in general, the landscapes are strange: high mountainous round areas surrounded by mountain ranges 250-300 km across, the entire area of \u200b\u200bwhich is occupied by volcanoes; other volcanic formations resemble cakes with steep edges and a flat crown. The surface of the planet is carved with channels that have been carved by lava. Traces of active volcanic activity are visible everywhere. Meteor craters on the surface of Venus are distributed evenly, which means that its surface took shape at the same time. Scientists cannot explain how this could happen, Venus seemed to boil and was flooded with lava. Now volcanic activity on the planet is not detected.
The atmosphere of Venus is not at all similar to the earth's, it mainly consists of carbon dioxide. The thickness of the gaseous shell of Venus, in comparison with the earth, is monstrously large. The layer of clouds reaches 20 km. They found the presence of a concentrated aqueous solution of sulfuric acid. Sunlight does not reach the surface of Venus, twilight reigns there, it is raining sulfur, the landscape is constantly illuminated by flashes of lightning. High in the atmosphere of the planet, constant winds rage that drive clouds at great speed, the upper layer of the Venusian atmosphere makes a complete revolution around the planet within four Earth days. The solid body of Venus, on the contrary, rotates around its axis very slowly and in a different direction than all the other planets. Venus has no satellites.
Mars.
In the 20th century, the planet Mars was chosen by science fiction writers; in their novels, the Martian civilization was incomparably higher than the earthly one. The mysterious inaccessible Mars began to reveal its secrets when Soviet and American automatic spacecraft began to be sent to study it.
The Mariner-9 station, revolving around Mars, took pictures of all parts of the planet, which made it possible to create a detailed map of the surface topography. Researchers have discovered traces of active geological processes on the planet: huge volcanoes, the largest of them, Olympus, 25 km high, and a huge fault in the Martian crust, called the Mariner Valley, which crosses an eighth of the planet.
Gigantic structures grew in the same place for billions of years, unlike the Earth with its drifting continents, the surface of Mars did not move. The geological structures of the Earth, in comparison with the Martian ones, are dwarfs. Are volcanoes active on Mars now? Scientists believe that geological activity on the planet is obviously a thing of the past.
Among the Martian landscapes, reddish rocky deserts predominate. Light transparent clouds float above them in the pink sky. The sky turns blue at sunset. The atmosphere of Mars is very rarefied. Every few years there are dust storms that capture almost the entire surface of the planet. A day on Mars lasts 24 hours and 37 minutes, the inclination of the axis of rotation of Mars to the plane of the orbit is almost the same as that of the Earth, so the change of seasons on Mars is quite consistent with the change of seasons on Earth. The planet is poorly heated by the Sun, so the temperature of its surface, even in a summer day, does not exceed 0 degrees, and in winter, frozen carbon dioxide settles on the stones from a fierce cold, and the Polar Caps also mainly consist of it. No traces of life have yet been found.
From Earth, Mars is seen as a reddish star, which is probably why it bears the name of the god of war, Mars. Two of his satellites were named Phobos and Deimos, which in ancient Greek means "fear" and "horror". The satellites of Mars are space "rocks" of irregular shape. Phobos is 18km x 22km and Deimos is 10km x 16km.
The planets are giants.
In 1977, American scientists and engineers launched an automatic interplanetary station towards Jupiter as part of the Voyager program. Once every 175 years, Jupiter, Saturn, Neptune and Pluto are located in such a way relative to the Earth that a launched spacecraft can examine all these planets in one flight. Scientists have calculated that under certain conditions, the spacecraft, flying up to the planet, falls into the gravitational sling, the planet itself sends the apparatus further to another planet. The calculations turned out to be correct. Earthlings were able to see these distant planets and their satellites through the "eyes" of space robots, unique information was transmitted to Earth.
Jupiter.
Jupiter is the largest planet in the solar system. It has no solid surface and consists mainly of hydrogen and helium. Due to the high speed of rotation around its axis, it is noticeably compressed at the poles. Jupiter has a huge magnetic field, if it became visible, then from the Earth it would look the size of the solar disk.
In the photographs, scientists were able to see only clouds in the planet's atmosphere, which create stripes parallel to the equator. But they moved with great speed, whimsically changing their outlines. Numerous whirlwinds, auroras and flashes of lightning have been recorded in Jupiter's cloud cover. On the planet, the wind speed reaches one hundred kilometers per hour. The most amazing formation in the atmosphere of Jupiter is a large red spot 3 times the size of the Earth. Astronomers have been observing it since the 17th century. It is possible that this is the tip of a gigantic tornado. Jupiter releases more energy than it receives from the Sun. Scientists believe that in the center of the planet, gases are compressed to the state of a metallic liquid. This hot core is the power plant that generates winds and a monstrous magnetic field.
But the main surprises for scientists were presented not by Jupiter itself, but by its satellites.
Satellites of Jupiter.
There are 16 known moons of Jupiter. The largest of them, Io, Europa, Callisto and Ganymede, were discovered by Galileo, they are visible even with strong binoculars. It was believed that the satellites of all planets are like the moon - they are cold and lifeless. But Jupiter's moons surprised researchers.
And about- the size of the moon, but this is the first celestial body, except for the Earth, on which active volcanoes were discovered. Io is covered in volcanoes. Its surface is washed by multi-colored lava flows, volcanoes emit sulfur. But what is the reason for the active volcanic activity of such a small cosmic body? Rotating around the huge Jupiter, Io either approaches it or moves away.
Under the influence of either increasing or decreasing gravitational force, Io either contracts or expands. Friction forces heated its inner layers to an enormous temperature. Io's volcanic activity is incredible, its surface is changing before our eyes. Io moves in Jupiter's powerful magnetic field, so it builds up a huge electrical charge that discharges onto Jupiter in a continuous stream of lightning, causing storms on the planet.
Europe has a relatively smooth surface, virtually without relief. It is covered with a layer of ice, it is likely that the ocean is hiding under it. Instead of molten rocks, water oozes from cracks here. This is a completely new kind of geological activity.
Ganymede is the largest satellite in the solar system. Its dimensions are almost the same as those of Mercury.
Callisto dark and cold, its surface pitted with meteorite craters has not changed for billions of years.
Saturn.
Saturn, like Jupiter, does not have a solid surface - it is a gas giant planet. It also consists of hydrogen and helium, but it is colder, since it produces less heat itself and receives less from the Sun. But on Saturn the winds are faster than on Jupiter. Stripes, vortices and other formations are observed in the atmosphere of Saturn, but they are short-lived and irregular.
Naturally, the attention of scientists was directed to the rings that surround the planet's equator. They were discovered by astronomers in the 17th century, since then scientists have been trying to understand what they are. Photos of the rings, transmitted to earth by an automatic space station, surprised the researchers. They managed to identify several hundred nested rings, some intertwined with each other, dark stripes were found on the rings that appeared and disappeared, they were called knitting needles. Scientists were able to see the rings of Saturn from a fairly close distance, but they had more questions than answers.
In addition to the rings, 15 satellites move around Saturn. The largest of them - Titan is slightly smaller than Mercury. The dense atmosphere of Titan is much thicker than Earth's and almost entirely composed of nitrogen, it did not allow to see the surface of the satellite, but scientists suggest that the internal structure of Titan is similar to the structure of the Earth. The temperature at its surface is below minus 200 degrees.
Uranus.
Uranus differs from all other planets in that its axis of rotation lies almost in the plane of its orbit, all the planets look like a toy top, and Uranus rotates as if "lying on its side." Voyager managed to "see" little in the atmosphere of Uranus, the planet outwardly turned out to be very monotonous. There are 5 satellites around Uranus.
Neptune.
It took Voyager 12 years to reach Neptune. How surprised scientists were when they saw a planet very similar to Earth on the outskirts of the solar system. It was deep blue in color, white clouds were moving in different directions in the atmosphere. Winds on Neptune blow much stronger than on other planets.
There is so little energy on Neptune that the wind, having risen, can no longer stop. Scientists have discovered a system of rings around Neptune, but they are incomplete and are arcs, there is no explanation for this yet. Neptune and Uranus are also giant planets, but not gas ones, but ice ones.
Neptune has 3 satellites. One of them - Triton rotates in the opposite direction to the rotation of Neptune itself. Perhaps it did not form in Neptune's gravity zone, but was attracted to the planet when it came close to it and fell into its zone of attraction. Triton is the coldest body in the solar system, with a surface temperature slightly above absolute zero (minus 273 degrees). But nitrogen geysers have been discovered on Triton, which indicates its geological activity.
Pluto
Pluto is now officially no longer a planet. Now it should be considered a "dwarf planet", one of three in the solar system. The fate of Pluto was determined in 2006 by a vote of members of the International Astronomical Society in Prague.
To avoid confusion and not clutter up maps of the solar system, the International Astronomical Union has ordered to classify as dwarf planets sufficiently large celestial bodies that are not among the eight previously identified planets. In particular, Pluto, Charon (a former satellite of Pluto), the asteroid Ceres circulating between the orbits of Mars and Jupiter, as well as the objects of the so-called Kuiper belt Zena (Xena, object UB313) and Sedna (object 90377) received a new status.
The solar system is a group of planets revolving in certain orbits around a bright star - the Sun. This luminary is the main source of heat and light in the solar system.
It is believed that our system of planets was formed as a result of the explosion of one or more stars and this happened about 4.5 billion years ago. At first, the solar system was a collection of gas and dust particles, however, over time and under the influence of its own mass, the Sun and other planets arose.
Planets of the solar system
In the center of the solar system is the Sun, around which eight planets move in their orbits: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
Until 2006, Pluto also belongs to this group of planets, it was considered the 9th planet from the Sun, however, due to its considerable distance from the Sun and its small size, it was excluded from this list and called a dwarf planet. Rather, it is one of several dwarf planets in the Kuiper belt.
All the above planets are usually divided into two large groups: the terrestrial group and the gas giants.
The terrestrial group includes such planets as: Mercury, Venus, Earth, Mars. They are distinguished by their small size and rocky surface, and in addition, they are located closer than the others to the Sun.
The gas 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 made up mostly of gas.
The sun
The sun is the star around which all the planets and moons in the solar system revolve. It is made up of hydrogen and helium. The Sun is 4.5 billion years old, only in the middle of its life cycle, gradually increasing in size. Now the diameter of the Sun is 1,391,400 km. In the same number of years, this star will expand and reach the orbit of the Earth.
The sun is the source of heat and light for our planet. Its activity increases or becomes weaker every 11 years.
Due to the extremely high temperatures on its surface, a detailed study of the Sun is extremely difficult, but attempts to launch a special apparatus as close as possible to the star continue.
Terrestrial group of planets
Mercury
This planet is one of the smallest in the solar system, its diameter is 4,879 km. In addition, it is closest to the Sun. This neighborhood predetermined a significant temperature difference. The average temperature on Mercury during the day is +350 degrees Celsius, and at night it is -170 degrees.
If we focus on the earth's year, then Mercury makes a complete revolution around the sun in 88 days, and one day there lasts 59 earth days. It was noticed that this planet can periodically change the speed of its rotation around the Sun, its distance from it and its position.
There is no atmosphere on Mercury, in connection with this, asteroids often attack it and leave behind a lot of craters on its surface. Sodium, helium, argon, hydrogen, oxygen were discovered on this planet.
A detailed study of Mercury presents great difficulties due to its close proximity to the Sun. Mercury can sometimes be seen from Earth with the naked eye.
According to one theory, it is believed that Mercury was previously a satellite of Venus, however, this assumption has not yet been proven. Mercury has no satellite.
Venus
This planet is the second from the Sun. In size, it is close to the diameter of the Earth, the diameter is 12,104 km. In all other respects, Venus is significantly different from our planet. A day here lasts 243 Earth days, and a year - 255 days. The atmosphere of Venus is 95% 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.
Unlike the Earth, most of whose surface is covered with water, there is no liquid on Venus, and almost the entire surface is occupied by solidified basaltic lava. According to one theory, there used to be oceans on this planet, however, as a result of internal heating, they evaporated, and the vapors were carried away by the solar wind into outer space. Near the surface of Venus, weak winds blow, however, at an altitude of 50 km, their speed increases significantly and amounts to 300 meters per second.
There are many craters and hills on Venus, reminiscent of terrestrial continents. The formation of craters is associated with the fact that earlier the planet had a less dense atmosphere.
A distinctive feature of Venus is that, unlike the other planets, its movement does not occur from west to east, but from east to west. It can be seen from Earth even without the help of a telescope after sunset or before sunrise. This is due to the ability of its atmosphere to reflect light well.
Venus has no satellite.
Earth
Our planet is located at a distance of 150 million km from the Sun, and this allows us to create on its surface a temperature suitable for the existence of water in liquid form, and, therefore, for the emergence of life.
Its surface is 70% covered with water, and it is the only one of the planets that has such an amount of liquid. It is believed that many thousands of years ago, the steam contained in the atmosphere created the temperature on the Earth's surface necessary for the formation of water in liquid form, and solar radiation contributed to photosynthesis and the birth of life on the planet.
A feature of our planet is that under the earth's crust there are huge tectonic plates that, moving, collide with each other and lead to a change in the landscape.
The diameter of the Earth is 12,742 km. An Earth day lasts 23 hours 56 minutes 4 seconds, and a year - 365 days 6 hours 9 minutes 10 seconds. Its atmosphere is 77% nitrogen, 21% oxygen and a small percentage of other gases. None of the atmospheres of other planets in the solar system has such an amount of oxygen.
According to scientists, the age of the Earth is 4.5 billion years, about the same time its only satellite, the Moon, exists. It is always turned to our planet with only one side. There are many craters, mountains and plains on the surface of the Moon. It reflects sunlight very weakly, so it can be seen from Earth in a pale moonshine.
Mars
This planet is the fourth in a row from the Sun and is 1.5 times more distant from it than the Earth. The diameter of Mars is smaller than Earth's and is 6,779 km. The average air temperature on the planet ranges from -155 degrees to +20 degrees at the equator. The magnetic field on Mars is much weaker than that of the Earth, and the atmosphere is quite rarefied, which allows solar radiation to freely affect the surface. In this regard, if there is life on Mars, it is not on the surface.
When surveyed with the help of rovers, it was found that there are many mountains on Mars, as well as dried riverbeds and glaciers. The surface of the planet is covered with red sand. Iron oxide gives Mars its color.
One of the most frequent events on the planet are dust storms, which are voluminous and destructive. Geological activity on Mars could not be detected, however, it is reliably known that significant geological events took place on the planet earlier.
The atmosphere of Mars is 96% carbon dioxide, 2.7% nitrogen and 1.6% argon. Oxygen and water vapor are present in minimal quantities.
A day on Mars is similar in duration to that on Earth and is 24 hours 37 minutes 23 seconds. A year on the planet lasts twice as long as the earth - 687 days.
The planet has two moons Phobos and Deimos. They are small and uneven in shape, reminiscent of asteroids.
Sometimes Mars is also visible from Earth with the naked eye.
gas giants
Jupiter
This planet is the largest in the solar system and has a diameter of 139,822 km, which is 19 times larger than the earth. A day on Jupiter lasts 10 hours, and a year is approximately 12 Earth years. Jupiter is mainly composed of xenon, argon, and krypton. If it were 60 times larger, it could become a star due to a spontaneous thermonuclear reaction.
The average temperature on the planet is -150 degrees Celsius. The atmosphere is made up of hydrogen and helium. There is no oxygen or water on its surface. There is an assumption that there is ice in the atmosphere of Jupiter.
Jupiter has a huge number of satellites - 67. The largest of them are Io, Ganymede, Callisto and Europa. Ganymede is one of the largest moons in the solar system. Its diameter is 2634 km, which is approximately the size of Mercury. In addition, a thick layer of ice is visible on its surface, under which there may be water. Callisto is considered the oldest of the satellites, since it is its surface that has the largest number of craters.
Saturn
This planet is the second largest in the solar system. Its diameter is 116,464 km. It is most similar in composition to the Sun. A year on this planet lasts quite a long time, almost 30 Earth years, and a day is 10.5 hours. The average surface temperature is -180 degrees.
Its atmosphere consists mainly of hydrogen and a small amount of helium. Thunderstorms and auroras often occur in its upper layers.
Saturn is unique in that it has 65 moons and several rings. The rings are made up of small ice particles and rock formations. Ice dust perfectly reflects light, so the rings of Saturn are very clearly visible in a telescope. However, he is not the only planet to have a diadem, it is just less noticeable on other planets.
Uranus
Uranus is the third largest planet in the solar system and the seventh from the sun. It has a diameter of 50,724 km. It is also called the "ice planet", as the temperature on its surface is -224 degrees. A day on Uranus lasts 17 hours, and a year is 84 Earth years. At the same time, summer lasts as long as winter - 42 years. Such a natural phenomenon is due to the fact that the axis of that planet is located at an angle of 90 degrees to the orbit, and it turns out that Uranus, as it were, "lies on its side."
Uranus has 27 moons. The most famous of them are: Oberon, Titania, Ariel, Miranda, Umbriel.
Neptune
Neptune is the eighth planet from the Sun. In its composition and size, it is similar to its neighbor Uranus. The diameter of this planet is 49,244 km. A day on Neptune lasts 16 hours, and a year is equal to 164 Earth years. Neptune belongs to the ice giants and for a long time it was believed that no weather events occur on its icy surface. However, it has recently been found that Neptune has raging eddies and wind speeds the highest of the planets in the solar system. It reaches 700 km / h.
Neptune has 14 moons, the most famous of which is Triton. It is known that it has its own atmosphere.
Neptune also has rings. This planet has 6.
Interesting facts about the planets of the solar system
Compared to Jupiter, Mercury appears to be a dot in the sky. These are actually the proportions in the solar system:
Venus is often called the Morning and Evening Star, since it is the first of the stars visible in the sky at sunset and the last to disappear from visibility at dawn.
An interesting fact about Mars is the fact that methane was found on it. Due to the rarefied atmosphere, it is constantly evaporating, which means that the planet has a constant source of this gas. Such a source can be living organisms inside the planet.
Jupiter has no seasons. The biggest mystery is the so-called "Great Red Spot". Its origin on the surface of the planet is still not fully understood. Scientists suggest that it is formed by a huge hurricane that has been rotating at a very high speed for several centuries.
An interesting fact is that Uranus, like many planets in the solar system, has its own system of rings. Due to the fact that the particles that make up them reflect light poorly, the rings could not be detected immediately after the discovery of the planet.
Neptune has a rich blue color, so it was named after the ancient Roman god - the master of the seas. Due to its remote location, this planet was one of the last to be discovered. At the same time, its location was calculated mathematically, and over time it could be seen, and it was in the calculated place.
Light from the Sun reaches the surface of our planet in 8 minutes.
The solar system, despite its long and thorough study, is still fraught with many mysteries and mysteries that have yet to be revealed. One of the most fascinating hypotheses is the assumption of the presence of life on other planets, the search for which is actively continuing.
A long time ago, a star and nine planets appeared on the outskirts of one of the galaxies.
The star called itself the Sun, and the planets called themselves Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto. The sun was a hot-tempered, wayward, but kind star. It, neither thinking nor guessing, settled down in the center of the ring of meteorites, leaving the planets all the space around it.
Four small planets wanted life to appear on them, so it was decided that they would take their places near the sun, and the rest, not longing for life on themselves, but worried about their beauty, for the ring of meteorites.
- I, - said Mercury, thinking by no means always correctly, - I believe that life will arise only in heat, so I will be the first after the sun, especially since we are great friends with him. - With these words, the smallest planet took the chosen place and immediately began to heat up, but confident in the correctness of her decision, she did not change it.
Mars was next to speak, believing that it would be best if he took
fourth place after the Sun so as not to damage yourself with the heat of a scorching star and allow life to appear. Alas, if you chase two hares, you will not catch one.
- And I, - spoke, eternally raging, dazzlingly beautiful and proud Venus -
I think I need to get as close to the sun as possible. Warmth and my beauty will definitely create the conditions for a prosperous life. - And Venus took a place next to Mercury, becoming the second planet near the Sun. But what kind of life (her own or the one that could arise) she spoke about remains a mystery.
Modest, kind, not noticing its beauty, the Earth, sincerely wished for the emergence of life. It didn't matter where she got up, she believed that life would appear on it anywhere near the Sun. Therefore, without saying a word, she took the third place near the star.
It was easier for the other five planets. They chose their seats according to their size.
The fifth was taken by the giant Jupiter, the sixth by Saturn, proud of his multi-colored rings, the seventh by Uranus, the eighth by Neptune, and the ninth by the taciturn little Pluto.
When each of the planets fell into place, the star declared that it would rotate around its axis in order to see the world around it and advised others to do the same. The planets thought and agreed with the luminary.
However, the planets had a question that was voiced by Mars: “What is this? If we always stand in one line like this, then some will get more heat, others less, and some will not get it at all! How to make sure that there is enough light for everyone?
They thought the planets thought, and after several hours of reflection, they decided to move around the Sun, each in its own way, and this path was called an orbit.
So the planets lived together with the star for a long time, until the tourists arrived,
so-called satellites. They were struck by the friendship between the planets and the star, between the planets themselves.
The companions made friends with everyone, so much so that they decided to stay here forever. Each with their own new friend. The Moon satellite began to live near the Earth, revolving around it, amazed by its beauty and kindness. Phobos and Deimos are around Mars. Io, Ganymede, Callisto, Europa, admiring the size of Jupiter, remained to live next to him. Titan, Rhea, Prometheus, Epimetheus, Pandora and Janus decided to settle near Saturn. Oberon, Titania, Miranda, Ariel, Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet and Portia are with Uranus. Triton and Nereid - with Neptune. Charon is as silent as his friend, with Pluto.
Together with the satellites, the planets and the Sun became even more fun. And they lived happily ever after until they decided to call their system Solar, in honor of the star that gives them warmth.
After a few million years, life appeared on Earth, but not on Mercury, Mars and Venus. These planets were upset, but still did not lose hope that someday life would arise on them.
This is how the planets have lived up to the present, and perhaps they will live for millions of years.