Throughout history, human beings have felt a great fascination for celestial bodies.
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What is the solar system?
The solar system is a planetary system at the center of which is the Sun. It is the system in which the Earth orbits around the star king, as well as all the other seven planets of the solar system.
In fact, not only do the planets orbit around the Sun, but so do numerous celestial bodies such as satellites of planets, asteroids or comets.
At the same time, it should be noted that the solar system is a small part of the galaxy known as the Milky Way. Our galaxy is made up of billions of stars like the Sun. And these are precisely the ones that can be seen from Earth with the naked eye on clear nights.
These stars are at great distances from us. And it is that it is necessary to take into account that outside the Earth there are some notions that the human mind finds it difficult to understand. For example, to calculate distances light years are used.
To understand the magnitude of the matter, it can be taken as a reference that from the time the Sun emits its light until it reaches the Earth, eight minutes pass. Well, both the Earth and the Sun are 28,000 light years from the center of the Milky Way.
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The 8 planets of the solar system (characteristics and data)
The most notable celestial bodies in the solar system are the planets . These are characterized by being large spherical masses that orbit around the Sun, and their outer surface is cold.
The planet Earth is the home of the human being, but he has always been fascinated by the idea of being able to find another planet in the event that something happens to ours.
Below are those of the solar system (from closest to the Sun to furthest away), although they do not meet the necessary conditions for human life.
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1. Mercurio
Mercury is the smallest and closest planet to the Sun. Its density is greater than that of the other planets, and it is characterized by a rotation period corresponding to 59 Earth days.
Due to its proximity, it reaches temperatures totally incompatible with human life, and does not contain any water. Its metallic core is similar to that of the Earth, but its atmosphere is almost non-existent, which increases the absorption of heat.
2. Venus
Venus exhibits many features similar to those of Earth . It is the planet of the solar system most easily identifiable with the naked eye, and the moment that it can be glimpsed is before sunrise or just after sunset.
It is the second closest planet to the Sun and has a very hot temperature. Due to the very high presence of carbon dioxide in the atmosphere, a large greenhouse effect is generated. High temperatures, atmospheric pressure and the composition of the air make Venus an unsuitable planet for life.
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3. The Earth
The Earth is the home of the human being and of all life as we know it . I had a history similar to that of the other planets, but factors as determining as its distance from the Sun and the presence of water have given rise to a world as we know it.
Many people dream of finding another planet in case humans have to find a new home, but the truth is that this possibility still seems very remote. What seems more strategic evolutionarily speaking is no other option than to take care of the planet and not plunge it into destruction.
4. Marte
Mars is a planet slightly smaller than Earth . On some nights it can be seen with the naked eye from Earth as a reddish celestial body, and it is the planet with conditions most similar to those of Earth.
However, this planet could not support human life. The atmosphere is hostile and causes large storms and dust with high speed winds, which modifies its surface. There is evidence that in the past there were rivers of water, which is concentrated especially frozen at the poles.
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5. Jupiter
Jupiter is by far the largest planet in the solar system . It has characteristics more similar to those of the Sun than to those of the Earth, and it is that it contains a gaseous layer formed mainly of hydrogen and helium, as well as methane, ammonia and water.
The innermost layer is very compact and is metallic in nature. Jupiter is a planet with satellites, which are called Europa, Ganymede and Callisto. They have similar dimensions to the Moon, and they have a very rocky composition.
6. Saturn
Saturn is also a very large planet, almost 100 times larger than Earth . It is mainly composed of hydrogen, and is surrounded by seven rings of solid materials in the equatorial plane of the planet.
It is a planet of the solar system that needs almost 30 years to go around the Sun. An interesting fact is that it is the least dense planet of the solar system, a characteristic totally opposite to the reality of our planet.
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7. Uranus
Uranus is a planet very rich in hydrogen, helium, and methane . It is therefore another planet in the solar system in which life is not possible, beyond the fact that its intermediate layer has detected the presence of water.
This layer also contains metals in liquid phase and a very rocky inner layer, while the outermost layer is composed of gases. It also has a system of rings that surround the planet.
8. Neptune
Neptune is the farthest planet from the Sun in the solar system . Much is unknown about him as analysis from Earth is unclear. However, it is known that in its atmosphere there is hydrogen, helium and methane.
In addition, it also has a ring structure around the planet, thus sharing characteristics with Jupiter, Saturn and Uranus. More information is needed about this planet, which requires deeper studies that it is hoped can be done in the future.
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Bibliographic references
- Ferriere, K. (2001). The Interstellar Environment of our Galaxy. Reviews of Modern Physics, 73, (4), 1031–1066.
- Garlick, MA (2002). Cahe Story of the Solar System. United Kingdom: Cambridge University Press. The system
- Koupelis, T. (2010). In Quest of the Solar System. Jones & Bartlett Learning,
To the classic question “what do you do?” I always answer “basically I am a psychologist”. In fact, my academic training has revolved around the psychology of development, education and community, a field of study influenced my volunteer activities, as well as my first work experiences in personal services.