Today I want to learn about the solar system.
There are so many planets in space.
Let's find out about the planets close to the sun.
[Mercury]
Mercury is the planet closest to the sun in the solar system, and its size is only about 38%of the earth.
Because of this, aqueous is the smallest planet in the solar system, and its mass is the least.
Because of these attributes, the aqueous is also called ""small planet"" or ""small rock.""
The day of Mercury is about 59 districts, which is similar to the time it takes to take a round around the sun.
This is because the orbital cycle of Mercury is about 88.
Since these two periods are similar to each other, it takes about 176 districts to move from Mercury to Sunrise to sunset.
Mercury has a lot of topographical features like Earth.
The surface of the aqueous is filled with the volcanic terrain formed by differentiation and the crater formed by a huge collision.
In addition, Mercury has numerous valleys and canyons, which appear to have been formed by the planet cooling down.
Mercury is a planet with little atmosphere.
This is because the aqueous is close to the sun and it is very hot, so you can't keep the atmosphere.
Because of this, the difference between the day and night of the night is incredibly large. It goes up to 430 degrees Celsius during the day, but it can drop to negative 180 degrees at night.
Mercury is one of the five ancient planets that can be seen by the naked eyes on Earth.
However, since the aqueous is located close to the sun, the time to see the aqueous is only a short time immediately after sunrise or sunset.
Recently, space probes have visited Mercury and provided more information about the surface and structure.
[Venus]
Venus is the second -close planet in the solar system, with its size and mass similar to the earth.
For this reason, Venus is often called ""sister planet of the earth."" But the ground surface conditions and atmospheric conditions are very different from the earth.
Atmosphere: The atmosphere of Venus is mainly composed of carbon dioxide, which causes a strong greenhouse effect, which significantly increases the surface temperature of the planet.
Because of these conditions, Venus is the hottest planet in the solar system, and the surface temperature reaches 460 degrees Celsius. In addition, atmospheric pressure is also very high, about 92 times the earth.
Topography: The terrain of Venus consists of highlands, mountains, volcanoes and numerous crater.
However, because the plates do not move like Earth, the formation of mountain ranges like the earth due to volcanic activity seems to be less developed.
The surface of Venus consists of two large highland areas located near the enemy and the equator.
Admission and rotation: Venus takes about 225 districts for the sun.
It takes about 243 to take a round around your own axis, which means that the planet takes longer than a turn around the sun.
In addition, Venus is the only way to rotate the clockwise in the solar system, so the sunrise occurs in the west and the sunset occurs in the east.
Exploration: Many space probes have visited Venus and studied their characteristics.
But the extremely hot and high pressure environment is very limited to survive on the surface.
The Soviet Burks of the Soviet Union succeeded in landing on the surface of Venus in the 1970s and 1980s, but less than two hours when they could survive on the surface.
Because Venus is bright, it can be easily observed by the naked eyes, so it was observed in ancient civilizations.
The name ""Venus"" comes from the name of Rome's love and the goddess of beauty.
[earth]
Earth is the third -largest planet in the solar system, and is the only place where life is known to date.
There are also many unique features on Earth.
The size and mass of the earth: The diameter of the earth is about 12,742 kilometers, which is the fifth largest planet in the solar system.
The mass of the earth is about 5.972 x 10^24 kilograms.
Wait: The earth's atmosphere is mainly composed of nitrogen and oxygen.
It also includes argon, carbon dioxide and water vapor.
The ozone layer of the earth blocks the harmful ultraviolet rays of the sun, and the atmosphere plays a role in protecting life by surrounding the earth.
Planet of moisture: Earth is rich in water, and most of them are formed of sea and ocean.
About 71%of the surface of the earth is covered with water, most of which are the salt water.
The richness of this water is one of the main factors that allow life to develop and flourish in Earth.
Earth's magnetic field: Earth has a powerful magnetic field, which occurs in the external nucleus, the outer layer of the earth.
This magnetic field serves as a shield to protect the earth from the particles of the solar wind.
Tech Tonic: The Earth is a planet where tectonic plates move, which is the main way to form the earth's terrain.
Such traffic movements lead to geological activities such as earthquakes, volcanic eruptions, and mountain ranges.
Cycling and orbit: Earth is called one day, around 24 hours around his own axis.
In addition, the earth turns around the sun for about 365.25 days.
This means one year, and 0.25 days is added when calculating the leap year.
Livelihood: There are various creatures in Earth.
They are found in almost every part of the earth, from the most extreme to the most ordinary environment.
This ranges from the deep sea of the sea to the mountainous areas, deserts and glaciers.
As such, the earth has a very complex and unique system in itself.
This understanding helps us protect and preserve the earth.
[Mars]
Mars is the fourth -largest planet in the solar system and is often called ""red planet"".
This name is due to the characteristic reds that appear because of the rust iron light (iron oxide) on the surface of Mars.
Size and environment: The diameter of Mars is about 6,792 kilometers, which is about half of the earth's radius.
The atmosphere of Mars is mainly made of carbon dioxide, and the average temperature of Mars is negative 80 degrees Celsius because the atmosphere is very rare despite the greenhouse effect.
Topography: The terrain of Mars is very similar to the earth's.
Hwaseong has the highest volcano, Olympos Mones and the longest, longest canyon, Vales Marinery.
In addition, Mars has an ice cap made of water in the polar area.
The presence of numbers: On the surface of Mars, various geological features have been found that showing the possibility of water flowing in the past.
Mars exploration rovers also found minerals suggesting the possibility of water.
These discoveries have raised the possibility of life in Mars.
Admission and Cycling: Mars takes about 687 districts (1 mas year) to enlighten the sun.
The rotation cycle of Mars is similar to the day of the earth and is about 24.6 hours.
Exploration: Mars is one of the most explored planets of the solar system.
Numerous space probes have visited Mars, and NASA's exploration rovers are transmitting data collected from the surface of Mars to Earth.
Their discovery greatly helps us understand Mars, its past, and the future.
Human Mars Exploration Plan: Many institutions and companies, such as NASA and SPACEX, are planning to send humanity to Mars.
These efforts will greatly help mankind more deeply understanding the solar system and developing the ability to live in other planets in the end.
[Jupiter]
Jupiter is the largest planet in the solar system, the fifth closest position in the sun.
The characteristic gravity of Jupiter attracts many satellites around it, and the planet itself has very unique features.
Size and structure: Jupiter's diameter is about 142,984 kilometers, which is almost 11 times the diameter of the earth.
Jupiter is classified as a 'gas giant' consisting of atmosphere and liquid. Most of them are made of hydrogen and helium, and under severe pressure, the nucleus is thought to be surrounded by liquid metal hydrogen.
And it is estimated that there will be nucleus consisting of rocks and metal.
Atmosphere and climate: Jupiter's atmosphere consists of a complex cloud system and a powerful storm.
One of the most well -known features of Jupiter is the huge star storm of Daehongpok, which has been present for centuries.
Jupiter's atmosphere appears to be colored stripes, because of the difference in wind speeds in different atmosphere.
Admission and Sycology: Jupiter has an orbits around the sun for about 11.86 years.
But the rotation speed is very fast, and the day of Jupiter is about 9.9 district time.
Satellite: Jupiter has a large number of satellites.
There are 79 satellites of Jupiter, which is known by 2023, the largest and most well -known of these is the Galileo satellite found in 1610 by Galileo Galilea: Io, Europa, Ganime Made, Calisto.
Exploration: Jupiter was visited by several spaceships.
The most recent mission is NASA's Juno probe, which has been a Jupiter since 2016 and has been studying the structure and atmosphere of the planet.
Jupiter's ring: Jupiter also has a ring.
This was first discovered in 1979 by Voyager 1, which is very thin and dark, making it difficult to observe on Earth.
Jupiter plays an important role in the solar system because of its size, powerful gravity, and many satellites.
Jupiter's research plays an important role in understanding the structure and history of the solar system.
[Saturn]
Saturn is the second largest planet in the solar system, the sixth in the sun.
Saturn is well known for its best known ring system and a large number of satellites.
Size and structure: The diameter of Saturn is about 120,536 kilometers, which is almost 9.5 times the diameter of the earth.
Saturn is a 'gas giant' mainly consisting of hydrogen and helium, and it is considered to be composed of a nucleus that is liquefied due to deep atmosphere and pressure.
Atk and climate: Saturn's atmosphere consists of complex cloud systems and powerful storms.
These clouds are produced in the atmosphere of Saturn and in high pressure hydrogen and helium gas.
Admission and Sycology: Saturn takes about 29.5 years to turn around the sun.
Saturn's rotation is fast, and Saturn's day is about 10.7 district time.
Rings: The most famous feature of Saturn is that clear ring system.
This ring consists of ice and rock pieces, with hundreds of thousands of kilometers of widths, but the thickness is usually less than tens of meters.
The ring is divided into several distinct parts.
Satellite: Saturn has a large number of satellites.
There are 82 satellites of Saturn, known by 2023, the biggest of which is Titan.
Titan is the second largest satellite in the solar system and is one of the only celestial bodies that think there is a sea with water under the surface.
Exploration: Saturn was visited by several spaceships.
The most recent mission is the Cassini expedition, which has revived Saturn from 2004 to 2017, studying planets, its rings, and satellites.
Saturn occupies a unique position in the solar system because of its rings, various satellites, and unique atmospheres.
The study of Saturn helps us understand the history and structure of the solar system.
[Uranus]
Cheonwangseong is the third largest and fourth heavy planet in the solar system.
The seventh is the seventh, depending on the distance from the sun.
Cheonwangseong has a unique position in the solar system due to its unusual rotation axis and inevitable atmosphere.
Size and structure: The diameter of Cheonwangseong is about 51,118 kilometers, about four times the earth.
Cheonwangseong is classified as an 'ice giant' and has a thick atmosphere consisting of materials such as methane, water and ammonia in addition to hydrogen and helium.
These substances give blue color to the planet, and change to liquid states deep in the deeper pressure.
Attack and Climate: The atmosphere of Cheonwangseong is mainly composed of hydrogen, helium and methane.
This methane absorbs sunlight and reflects the blue light so that the royal castle looks blue.
In the atmosphere of Cheonwangseong, it is difficult to observe atmospheric circulation and climate change.
Advance and rotation: Cheonwangseong's orbital cycle is about 84 years old.
The rotation cycle is about 17.2 hours, which corresponds to the day of Cheonwangseong.
The peculiarity of Cheonwangseong is that the rotating axis is almost horizontal, which is also called 'lying planet'.
Satellite and Rings: There are 27 satellites known in Cheonwangseong.
The biggest of these is Titi and Oberon, both of which are 1600 kilometers.
In addition, Cheonwangseong has a thin ring system.
Exploration: Cheonwangseong has once visited by a human spaceship.
Voyager 2 passed Cheonwangseong in 1986 and collected information about the ring, satellite, atmosphere, and magnetic field.
Understanding Cheonwangseong is still limited, and we plan future exploration missions to get more information about this planet.
[Neptune]
Neptune is one of the longest plans in the solar system, and is classified as 'ice giant' like Cheonwangseong.
It plays a unique role in the solar system due to its unusual colors, rotating shafts and ranged locations.
Size and structure: Neptune is about 49,528 kilometers, about four times the earth.
The atmosphere is mainly composed of hydrogen and helium, but due to the presence of methane, the planet appears to be beautiful turquoise.
This methane absorbs the red ingredients of sunlight and reflects blue ingredients.
When it enters the interior of the planet, which is stronger, these gas is expected to change to the 'hot ice' form of water and ammonia.
Atmospheric and Climate: In the atmosphere of Neptune, a very strong wind occurs, one of the strongest winds in the solar system.
The wind flows east and west and the speed can reach 600 meters per second.
Advance and rotation: Neptune takes about 165 years to orbit around the sun.
The speed of rotation is fast, and the day of the Neptune is about 16.1 districts.
In addition, the Neutral is very tilted, like Cheonwangseong.
Satellites and rings: Negro has 14 satellites.
The biggest of these is tritone, which is the only big satellite of the rotating solar system.
In addition, there is a thin but distinct ring system in the navality.
Exploration: The only artificial ship that visits Neptune is Voyager 2.
In 1989, we passed the Neutralism and collected most information about this planet.
Neptune plays an important role in understanding the solar system due to its unusual location and conditions.
Further research on this planet will enrich the understanding of the structure and history of our solar system.
[Pluto]
Pluto was known as the farthest planet in the solar system, but in 2006, the International Astronomy Federation (IUA) was reclassified as 'dwarf' on the planet.
Nevertheless, Pluto maintains its importance as a major object of the solar system.
Size and structure: The diameter of Pluto is about 2,376 kilometers, which is only about 1/5 of the diameter of the earth.
The structure of Pluto is a nucleus consisting of rocks and ice, which is covered with ice, mainly composed of nitrogen, methane, and some carbon monoxide.
Such ice changes according to the season in response to the sunlight.
Attack and climate: The atmosphere of Pluto is very thin, but the atmospheric pressure is enough to form fog and clouds on the surface surface.
The atmosphere of the planet is mostly composed of nitrogen and contains a small amount of methane and carbon monoxide.
Advance and Cycling: Pluto takes about 248 years to enlighten the sun.
Pluto's rotation is made at a very slow speed corresponding to about 6.4 district work.
Satellite: Pluto has five known satellites. The biggest of these is Karon, which is nearly half of the diameter of Pluto.
Karon is often classified as a dual planet that orbits the center between the two, not the satellite of orbit of Pluto.
Exploration: In 2015, the New Horizons probe collected a lot of information about this planet as it passed through Pluto.
This probe has provided important data on the variety of terrain, complex atmosphere, and its satellites.
Pluto is an important object for solar system research due to its distant location and interesting characteristics.
Moreover, the reclassification of Pluto triggered the discussion of how astronomers should define and understand the concept of planet.
