Biographies Characteristics Analysis

The 7th planet from the sun is called. About the planets of the solar system for children

Planets of the solar system - a little history

Previously, a planet was considered to be any body that orbits a star, glows with light reflected from it, and is larger than an asteroid.

Even in Ancient Greece, they mentioned seven luminous bodies that move across the sky against the backdrop of fixed stars. These cosmic bodies were: the Sun, Mercury, Venus, Moon, Mars, Jupiter and Saturn. The earth was not included in this list, since the ancient Greeks considered the earth to be the center of all things.

And only in the 16th century, Nicolaus Copernicus, in his scientific work entitled “On the Revolution of the Celestial Spheres,” came to the conclusion that it was not the Earth, but the Sun that should be at the center of the planetary system. Therefore, the Sun and Moon were removed from the list, and the Earth was added to it. And after the advent of telescopes, Uranus and Neptune were added, in 1781 and 1846, respectively.
Pluto was considered the last discovered planet in the solar system from 1930 until recently.

And now, almost 400 years after Galileo Galilei created the world's first telescope for observing stars, astronomers have come to the following definition of a planet.

Planet is a celestial body that must satisfy four conditions:
the body must revolve around a star (for example, around the Sun);
the body must have sufficient gravity to have a spherical or close to it shape;
the body should not have other large bodies near its orbit;
the body should not be a star.

In turn, the polar star is a cosmic body that emits light and is a powerful source of energy. This is explained, firstly, by the thermonuclear reactions occurring in it, and secondly, by the processes of gravitational compression, as a result of which a huge amount of energy is released.

Planets of the Solar System today

solar system is a planetary system that consists of a central star - the Sun - and all the natural space objects orbiting around it.

So, today the solar system consists of eight planets: four inner, so-called terrestrial planets, and four outer planets, called gas giants.
The terrestrial planets include Earth, Mercury, Venus and Mars. All of them consist mainly of silicates and metals.

The outer planets are Jupiter, Saturn, Uranus and Neptune. Gas giants are composed mainly of hydrogen and helium.

The sizes of the planets of the Solar System vary both within groups and between groups. Thus, gas giants are much larger and more massive than terrestrial planets.
Mercury is closest to the Sun, then as it moves away: Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

It would be wrong to consider the characteristics of the planets of the Solar System without paying attention to its main component: the Sun itself. Therefore, we will start with it.

The sun planet is the star that gave rise to all life in the solar system. Planets, dwarf planets and their satellites, asteroids, comets, meteorites and cosmic dust revolve around it.

The Sun arose about 5 billion years ago, is a spherical, hot plasma ball and has a mass that is more than 300 thousand times the mass of the Earth. The surface temperature is more than 5000 degrees Kelvin, and the core temperature is more than 13 million K.

The Sun is one of the largest and brightest stars in our galaxy, which is called the Milky Way galaxy. The Sun is located at a distance of about 26 thousand light years from the center of the Galaxy and makes a full revolution around it in about 230-250 million years! For comparison, the Earth makes a full revolution around the Sun in 1 year.

Mercury planet

Mercury is the smallest planet in the system, which is closest to the Sun. Mercury has no satellites.

The surface of the planet is covered with craters that appeared about 3.5 billion years ago as a result of massive bombardment by meteorites. The diameter of the craters can range from a few meters to more than 1000 km.

The atmosphere of Mercury is very thin, consists mainly of helium and is inflated by the solar wind. Since the planet is located very close to the Sun and does not have an atmosphere that would retain heat at night, the surface temperature ranges from -180 to +440 degrees Celsius.

By earthly standards, Mercury completes a full revolution around the Sun in 88 days. But a Mercury day is equal to 176 Earth days.

Venus planet

Venus is the second planet closest to the Sun in the solar system. Venus is only slightly smaller in size than Earth, which is why it is sometimes called “Earth’s sister.” Has no satellites.

The atmosphere consists of carbon dioxide with admixtures of nitrogen and oxygen. The air pressure on the planet is more than 90 atmospheres, which is 35 times more than on Earth.

Carbon dioxide and the resulting greenhouse effect, dense atmosphere, and proximity to the Sun allow Venus to bear the title of “hottest planet.” The temperature on its surface can reach 460°C.

Venus is one of the brightest objects in the earth's sky after the Sun and Moon.

Planet Earth

Earth is the only planet known today in the Universe on which there is life. The Earth has the largest size, mass and density among the so-called inner planets of the Solar System.

The age of the Earth is about 4.5 billion years, and life appeared on the planet about 3.5 billion years ago. The Moon is a natural satellite, the largest of the satellites of the terrestrial planets.

The Earth's atmosphere is fundamentally different from the atmospheres of other planets due to the presence of life. Most of the atmosphere consists of nitrogen, but also includes oxygen, argon, carbon dioxide and water vapor. The ozone layer and the Earth's magnetic field, in turn, weaken the life-threatening influence of solar and cosmic radiation.

Due to the carbon dioxide contained in the atmosphere, the greenhouse effect also occurs on Earth. It is not as pronounced as on Venus, but without it the air temperature would be about 40°C lower. Without an atmosphere, temperature fluctuations would be very significant: according to scientists, from -100°C at night to +160°C during the day.

About 71% of the Earth's surface is occupied by the world's oceans, the remaining 29% are continents and islands.

Mars planet

Mars is the seventh largest planet in the solar system. “Red Planet”, as it is also called due to the presence of large amounts of iron oxide in the soil. Mars has two satellites: Deimos and Phobos.
The atmosphere of Mars is very thin, and the distance to the Sun is almost one and a half times greater than that of the Earth. Therefore, the average annual temperature on the planet is -60°C, and temperature changes in some places reach 40 degrees during the day.

Distinctive features of the surface of Mars are impact craters and volcanoes, valleys and deserts, and polar ice caps similar to those on Earth. The highest mountain in the solar system is located on Mars: the extinct volcano Olympus, whose height is 27 km! And also the largest canyon: Valles Marineris, whose depth reaches 11 km and length – 4500 km

Jupiter planet

Jupiter is the largest planet in the solar system. It is 318 times heavier than the Earth, and almost 2.5 times more massive than all the planets in our system combined. In its composition, Jupiter resembles the Sun - it consists mainly of helium and hydrogen - and emits a huge amount of heat equal to 4 * 1017 W. However, in order to become a star like the Sun, Jupiter must be 70-80 times heavier.

Jupiter has as many as 63 satellites, of which it makes sense to list only the largest - Callisto, Ganymede, Io and Europa. Ganymede is the largest moon in the solar system, even larger than Mercury.

Due to certain processes in the inner atmosphere of Jupiter, many vortex structures appear in its outer atmosphere, for example, bands of clouds in brown-red shades, as well as the Great Red Spot, a giant storm known since the 17th century.

Saturn planet

Saturn is the second largest planet in the solar system. Saturn's calling card is, of course, its ring system, which consists mainly of icy particles of various sizes (from tenths of a millimeter to several meters), as well as rocks and dust.

Saturn has 62 moons, the largest of which are Titan and Enceladus.
In its composition, Saturn resembles Jupiter, but in density it is inferior even to ordinary water.
The planet's outer atmosphere appears calm and uniform, which is explained by a very dense layer of fog. However, wind speeds in some places can reach 1800 km/h.

Uranus planet

Uranus is the first planet discovered by telescope, and the only planet in the Solar System that orbits the Sun on its side.
Uranus has 27 moons, which are named after Shakespearean heroes. The largest of them are Oberon, Titania and Umbriel.

The composition of the planet differs from gas giants in the presence of a large number of high-temperature modifications of ice. Therefore, along with Neptune, scientists have classified Uranus as an “ice giant.” And if Venus has the title of “hottest planet” in the solar system, then Uranus is the coldest planet with a minimum temperature of about -224°C.

Neptune planet

Neptune is the most distant planet in the solar system from the center. The story of its discovery is interesting: before observing the planet through a telescope, scientists used mathematical calculations to calculate its position in the sky. This happened after the discovery of inexplicable changes in the movement of Uranus in its own orbit.

Today, 13 satellites of Neptune are known to science. The largest of them, Triton, is the only satellite that moves in the direction opposite to the rotation of the planet. The fastest winds in the solar system also blow against the rotation of the planet: their speed reaches 2200 km/h.

In composition, Neptune is very similar to Uranus, therefore it is the second “ice giant”. However, like Jupiter and Saturn, Neptune has an internal source of heat and emits 2.5 times more energy than it receives from the Sun.
The blue color of the planet is given by traces of methane in the outer layers of the atmosphere.

Conclusion
Pluto, unfortunately, did not manage to get into our parade of planets in the solar system. But there is absolutely no need to worry about this, because all the planets remain in their places, despite changes in scientific views and concepts.

So, we answered the question how many planets are there in the solar system. There are only 8 .

Our Solar System consists of the Sun, the planets orbiting it, and smaller celestial bodies. All of these are mysterious and surprising because they are still not fully understood. Below will be indicated the sizes of the planets of the solar system in ascending order, and a brief description of the planets themselves.

There is a well-known list of planets, in which they are listed in order of their distance from the Sun:

Pluto used to be in last place, but in 2006 it lost its status as a planet, as larger celestial bodies were found further away from it. The listed planets are divided into rocky (inner) and giant planets.

Brief information about rocky planets

The inner (rocky) planets include those bodies that are located inside the asteroid belt separating Mars and Jupiter. They got their name “stone” because they consist of various hard rocks, minerals and metals. They are united by a small number or absence of satellites and rings (like Saturn). On the surface of rocky planets there are volcanoes, depressions and craters formed as a result of the fall of other cosmic bodies.

But if you compare their sizes and arrange them in ascending order, the list will look like this:

Brief information about the giant planets

The giant planets are located beyond the asteroid belt and therefore are also called outer planets. They consist of very light gases - hydrogen and helium. These include:

But if you make a list by the size of the planets in the solar system in ascending order, the order changes:

A little information about the planets

In modern scientific understanding, a planet means a celestial body that revolves around the Sun and has sufficient mass for its own gravity. Thus, there are 8 planets in our system, and, importantly, these bodies are not similar to each other: each has its own unique differences, both in appearance and in the components of the planet themselves.

- This is the planet closest to the Sun and the smallest among the others. It weighs 20 times less than the Earth! But, despite this, it has a fairly high density, which allows us to conclude that there are a lot of metals in its depths. Due to its strong proximity to the Sun, Mercury is subject to sudden temperature changes: at night it is very cold, during the day the temperature rises sharply.

- This is the next planet closest to the Sun, in many ways similar to Earth. It has a more powerful atmosphere than Earth, and is considered a very hot planet (its temperature is above 500 C).

- This is a unique planet due to its hydrosphere, and the presence of life on it led to the appearance of oxygen in its atmosphere. Most of the surface is covered with water, and the rest is occupied by continents. A unique feature is the tectonic plates, which move, albeit very slowly, resulting in changes in the landscape. The Earth has one satellite - the Moon.

– also known as the “Red Planet”. It gets its fiery red color from a large amount of iron oxides. Mars has a very thin atmosphere and much lower atmospheric pressure compared to Earth. Mars has two satellites - Deimos and Phobos.

is a real giant among the planets of the solar system. Its weight is 2.5 times the weight of all the planets combined. The surface of the planet consists of helium and hydrogen and is in many ways similar to the sun. Therefore, it is not surprising that there is no life on this planet - there is no water and a solid surface. But Jupiter has a large number of satellites: 67 are currently known.

– This planet is famous for the presence of rings consisting of ice and dust revolving around the planet. With its atmosphere it resembles that of Jupiter, and in size it is slightly smaller than this giant planet. In terms of the number of satellites, Saturn is also slightly behind - it has 62 known. The largest satellite, Titan, is larger than Mercury.

- the lightest planet among the outer ones. Its atmosphere is the coldest in the entire system (minus 224 degrees), it has a magnetosphere and 27 satellites. Uranium consists of hydrogen and helium, and the presence of ammonia ice and methane has also been noted. Because Uranus has a high axial tilt, it appears as if the planet is rolling rather than rotating.

- despite its smaller size than , it is heavier and exceeds the mass of the Earth. This is the only planet that was found through mathematical calculations, and not through astronomical observations. The strongest winds in the solar system were recorded on this planet. Neptune has 14 moons, one of which, Triton, is the only one that rotates in the opposite direction.

It is very difficult to imagine the entire scale of the solar system within the limits of the studied planets. It seems to people that the Earth is a huge planet, and, in comparison with other celestial bodies, it is so. But if you place giant planets next to it, then the Earth already takes on tiny dimensions. Of course, next to the Sun, all celestial bodies appear small, so representing all the planets in their full scale is a difficult task.

The most famous classification of planets is their distance from the Sun. But a listing that takes into account the sizes of the planets of the Solar System in ascending order would also be correct. The list will be presented as follows:

As you can see, the order has not changed much: the inner planets are on the first lines, and Mercury occupies the first place, and the outer planets occupy the remaining positions. In fact, it doesn’t matter at all in what order the planets are located, this will not make them any less mysterious and beautiful.

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 approximately 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 characteristics.

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, consist mainly of hydrogen and helium; The smaller gas giants, Uranus and Neptune, contain methane and carbon monoxide in their atmospheres, in addition to hydrogen and helium.

Rice. 1. Planets of the Solar System.

The list of planets in the Solar System, in order from the Sun, looks like this: 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 orbit the Sun in the same direction as the Sun's rotation (counterclockwise when viewed from the Sun's north pole).

Mercury has the highest angular velocity - it manages to complete a full revolution around the Sun in just 88 Earth days. And for the most distant planet - Neptune - the orbital period 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, with Uranus rotating almost “lying on its side” (axis tilt is about 90 degrees).

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Table. The sequence of planets in the solar system and their features.

Planet

Distance from the Sun

Circulation period

Rotation period

Diameter, km.

Number of satellites

Density g/cub. cm.

Mercury

Terrestrial planets (inner planets)

The four planets closest to the Sun consist predominantly of heavy elements, have a small number of satellites, and have no rings. They are largely composed of refractory minerals such as silicates, which form their mantle and crust, and metals, such as iron and nickel, which form their core. Three of these planets—Venus, Earth, and Mars—have atmospheres.

  • 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 an iron core and an 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, its surface temperature exceeds 400 degrees Celsius. The most likely reason for such high temperatures is the greenhouse effect, which occurs due to a dense atmosphere rich in carbon dioxide.

Rice. 2. Venus is the hottest planet in the solar system

  • Earth- is the largest and most dense 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 its hydrosphere). The 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 terrestrial planets of the Solar System.
  • Mars– smaller than Earth and Venus. It has an atmosphere consisting mainly of carbon dioxide. There are volcanoes on its surface, the largest of which, Olympus, exceeds the size of all terrestrial volcanoes, reaching a height of 21.2 km.

Outer Solar System

The outer region of the Solar System is home to gas giants and their satellites.

  • Jupiter- has a mass 318 times that of Earth, and 2.5 times more massive than all 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 satellites.

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 rotation axis to the ecliptic plane is approximately 98 degrees. Uranus has 27 moons.
  • Neptune- 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 in astronomy is the structure of the solar system. We learned what names the planets of the solar system are, in what sequence they are located in relation to the Sun, what are their distinctive features and brief characteristics. This information is so interesting and educational that it will be useful even for 4th grade children.

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Space is incomprehensible, its scale and magnitude are difficult to imagine. The sky hides so many mysteries that, having answered one question, scientists are faced with twenty new ones. Even answering how many planets are in the solar system is quite difficult. Why? It's not easy to explain, but we'll try. Read on: it will be interesting.

How many planets are there in the solar system according to the latest data?

Until 2006, all school textbooks and astronomical encyclopedias wrote in black and white: there are exactly nine planets in the solar system.

But the American mathematician Michael Brown was one of those who made even people far from science talk about space. The scientist initiated a revision of the concept of “planet”. According to the new criteria, Pluto has been removed from the planetary list.

The poor guy was assigned to a new class - “dwarf planetoids”. Why did this happen? According to the fourth parameter, a planet is considered a cosmic body whose gravity dominates in orbit. Pluto, on the other hand, has only 0.07 masses concentrated in its orbit. By comparison, the Earth is 1.7 million times heavier than anything in its path.

Haumea, Makemake, Eris and Ceres, which was previously considered an asteroid, were also included in this class. All of them are part of the Kuiper belt - a special cluster of cosmic objects, similar to the asteroid belt, but 20 times wider and heavier.

Anything beyond Neptune's orbit is called a trans-Neptunian object. In the early 2000s, scientists discovered Sedna, a planetoid with an unusually distant and elongated orbit around the Sun. In 2014, another object with similar parameters was discovered.

Researchers asked the question: why is the orbit of these cosmic bodies so elongated? They were assumed to be influenced by a hidden massive object. Michael Brown and his Russian colleague Konstantin Batygin mathematically calculated the trajectory of the planets known to us, taking into account the available data.

The results stunned scientists: the theoretical orbits did not coincide with the real ones. This confirmed the assumption of the presence of a massive planet "X". We also managed to find out its approximate trajectory: the orbit is elongated, and the closest point to us is 200 times the distance from the Earth to the Sun.

Scientists believe that the potential ninth planet is an ice giant whose mass is 10–16 times greater than Earth.

Humanity is already monitoring the supposed region of space where an unknown planet will appear. The probability of error in calculations is 0.007%. This means virtually guaranteed detection between 2018 and 2020.

The Japanese Subaru telescope is used for observation. Perhaps the observatory in Chile with the LSST telescope will come to his aid, the construction of which is planned to be completed in three years, in 2020.

Solar system: arrangement of planets

The planets of the Solar System are divided into two groups:

  • The first includes relatively small cosmic bodies that have a rocky surface, 1–2 satellites and a relatively small mass.
  • The second is giant planets made of dense gas and ice. They absorbed 99% of the matter in solar orbit. They are characterized by a large number of satellites and rings, which can only be observed from Earth near Saturn.

Let's take a closer look at the planets in order of their location from the Sun:

  1. Mercury is the closest planet to the Sun. Presumably, early in history, a strong impact with some object tore off much of the surface. Therefore, Mercury has a relatively large iron core and a thin crust. The Earth year on Mercury lasts only 88 days.

  1. Venus is a planet named after the ancient Greek goddess of love and fertility. Its size is almost comparable to the Earth. She, like Mercury, has no satellites. Venus is the only one in the solar system that rotates counterclockwise. The surface temperature reaches 400 degrees Celsius. This may be due to the greenhouse effect created by the super-dense atmosphere.

  1. The earth is our only home yet. The uniqueness of the planet, if you do not take into account the presence of life, lies in its hydro- and atmosphere. The amount of water and free oxygen exceeds that of any other known planets.

  1. Mars is our red neighbor. The color of the planet is due to the high content of oxidized iron in the soil. Olympus is located here. No joke, that’s the name of the volcano, and its dimensions correspond to the name - 21 km high and 540 km wide! Mars is accompanied by two moons, which are believed to be asteroids captured by the planet's gravity.

The asteroid belt runs between the terrestrial planets and the gas giants. This is a cluster of relatively small celestial bodies from 1 m to 100 km in diameter. Previously it was believed that there was a planet in this orbit that was destroyed as a result of a catastrophe. However, the theory was not confirmed. It is now believed that the ring of asteroids is nothing more than an accumulation of matter left over after the formation of the Solar System. Roughly speaking - unnecessary trash.

  1. Jupiter is the largest planet in the solar system. It is 2.5 times heavier than the other planets. Due to the high pressure, storms of hydrogen and helium rage here. The largest vortex reaches 40–50 thousand km in length and 13 thousand km in width. If a person were at the epicenter, provided he survived in the atmosphere, the wind would tear him to pieces, because its speed reaches 500 km/h!

  1. Saturn is considered by many to be the most beautiful planet. Known for its rings, which consist mainly of water ice and dust. Their width on a cosmic scale is incredibly small - 10–1000 meters. The planet has 62 satellites - 5 less than Jupiter. It is believed that there were more of them about 4.5 billion years ago, but Saturn absorbed them, which is why the rings formed.

  1. Uranus. Due to the nature of its rotation, this ice giant is called a “rolling ball.” The planet's axis relative to its orbit around the Sun is tilted 98 degrees. After the “impeachment”, Pluto became the coldest planet (‒224 degrees Celsius). This is explained by the relatively low temperature of the core - approximately 5 thousand degrees.

  1. Neptune is a blue planet due to the large amount of methane in its atmosphere, which also contains nitrogen, ammonia and water ice. Remember when we talked about the winds on Jupiter? Forget it, because here its speed is more than 2000 km/h!

A little about the outsider

Most likely, Pluto was not very offended that he was excluded from the planetary family. By and large, what difference does it make what people on distant Earth think? But, one way or another, I need to say a few words about the recently ninth planet from the Sun.

Pluto is the coldest place in the system. The temperature here is close to absolute zero and drops to –240 degrees Celsius. It is six times lighter and three times smaller than the Moon. The planet's largest moon, Charon, is one third the size of Pluto. The other four satellites orbit around them. Therefore, perhaps they will be reclassified as a double planetary system. By the way, the bad news is that you will have to wait 500 years for the New Year on Pluto!

What do we end up with? According to the latest data, there are eight planets in the solar system, but, according to mathematical calculations, there should be a ninth. If you think that calculations are nothing, here’s a fact: Neptune was discovered by mathematicians in 1846, but was only seen up close in 1989, when Voyager 2 flew past. With all the scale of our home, we are just grains of sand in the space of space.

The solar system is our cosmic region, and the planets in it are our homes. Agree, each house should have its own number.

In this article you will learn about the correct location of the planets, as well as why they are called this way and not otherwise.

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Let's start with the Sun.

Literally, the star of today's article is the Sun. They named him that, according to some sources, in honor of the Roman god Sol, he was the god of the heavenly body. The root “sol” is present in almost all languages ​​of the world and in one way or another gives an association with the modern concept of the Sun.

From this luminary begins the correct order of objects, each of which is unique in its own way.

Mercury

The very first object of our attention is Mercury, named after the divine messenger Mercury, distinguished by his phenomenal speed. And Mercury itself is by no means slow - due to its location, it rotates around the Sun faster than all the planets in our system, being, moreover, the smallest “house” revolving around our luminary.

Interesting Facts:

  • Mercury revolves around the Sun in an ellipsoidal orbit, not a round one like other planets, and this orbit is constantly shifting.
  • Mercury has an iron core, making up 40% of its total mass and 83% of its volume.
  • Mercury can be seen in the sky with the naked eye.

Venus

"House" number two in our system. Venus was named after the goddess- the beautiful patroness of love. In size, Venus is only slightly inferior to our Earth. Its atmosphere consists almost entirely of carbon dioxide. There is oxygen in its atmosphere, but in very small quantities.

Interesting Facts:

Earth

The only space object on which life has been discovered is the third planet in our system. For living organisms to live comfortably on Earth, there is everything: suitable temperature, oxygen and water. The name of our planet comes from the Proto-Slavic root “-zem”, meaning “low”. Probably, it was called that way in ancient times because it was considered flat, in other words “low”.

Interesting Facts:

  • Earth's satellite The Moon is the largest satellite among the satellites of the terrestrial planets - the dwarf planets.
  • It is the densest planet among the terrestrial group.
  • Earth and Venus are sometimes called sisters because they both have atmospheres.

Mars

The fourth planet from the Sun. Mars is named after the ancient Roman god of war for its blood-red color, which is not bloody at all, but, in fact, iron. It is the high iron content that gives the surface of Mars its red color. Mars is smaller than Earth, but has two satellites: Phobos and Deimos.

Interesting Facts:

Asteroid belt

The asteroid belt is located between Mars and Jupiter. It acts as a boundary between the terrestrial planets and the giant planets. Some scientists believe that the asteroid belt is nothing more than a planet that has shattered into fragments. But so far the whole world is more inclined to the theory that the asteroid belt is a consequence of the Big Bang that gave birth to the galaxy.

Jupiter

Jupiter is the fifth “house”, counting from the Sun. It is two and a half times heavier than all the planets in the galaxy combined. Jupiter is named after the ancient Roman king of the gods, most likely due to its impressive size.

Interesting Facts:

Saturn

Saturn is named after the Roman god of agriculture. The symbol of Saturn is the sickle. The sixth planet is widely known for its rings. Saturn has the lowest density of all the natural satellites orbiting the Sun. Its density is even lower than that of water.

Interesting Facts:

  • Saturn has 62 satellites. The most famous of them: Titan, Enceladus, Iapetus, Dione, Tethys, Rhea and Mimas.
  • Saturn's moon Titan has the most significant atmosphere of all the system's moons, and Rhea has rings, like Saturn itself.
  • The composition of the chemical elements of the Sun and Saturn is most similar than that of the Sun and other objects in the solar system.

Uranus

The seventh "house" in the solar system. Uranus is sometimes called the “lazy planet” because it lies on its side during rotation - the tilt of its axis is 98 degrees. Also, Uranus, the lightest planet in our system, and its moons are named after the characters of William Shakespeare and Alexander Pope. Uranus itself is named after the Greek god of the sky.

Interesting Facts:

  • Uranus has 27 moons, the most famous of which are Titania, Ariel, Umbriel and Miranda.
  • The temperature on Uranus is -224 degrees Celsius.
  • One year on Uranus is equal to 84 years on Earth.

Neptune

The eighth and last planet of the solar system is located quite close to its neighbor Uranus. Neptune got its name in honor of the god of the seas and oceans. Apparently, it was given to this space object after researchers saw Neptune's deep blue color.

Interesting Facts:

About Pluto

Pluto has officially ceased to be considered a planet since August 2006. It was considered too small and declared an asteroid. The name of the former planet of the galaxy is not at all the name of some god. The discoverer of this now asteroid named this space object after his daughter’s favorite cartoon character, Pluto the dog.

In this article, we briefly looked at the positions of the planets. We hope you found this article useful and informative.