In details

The solar system


The solar system is a set of planets, asteroids and comets that revolve around the sun. Each one remains in its respective orbit due to the intense gravitational force exerted by the star, which has much greater mass than any other planet.

The most important bodies in the solar system are the eight planets which revolve around the sun, describing elliptical orbits, ie, orbits similar to slightly eccentric circumferences.


The planets that make up the solar system

The sun is not exactly in the center of these orbits, as you can see in the picture below, which is why planets can sometimes be closer or farther from the star.


Elliptical Orbits of Solar System Planets

Solar System Source

The sun and the solar system originated long ago. 4.5 billion years from a cloud of gas and dust that swirled around itself. Under its own weight, this cloud flattened into a disk, the center of which formed the sun. Within this disc, a process of agglomeration of solid materials began, which, when collided with each other, gave rise to larger bodies, the other planets.

The composition of such clusters was related to the distance between them and the sun. Far from the star, where the temperature was very low, the planets have much more gas than solid matter, such as Jupiter, Saturn, Uranus and Neptune. The planets near him, in contrast, the ice evaporated, leaving only rocks and metals, such as Mercury, Venus, Earth and Mars.

The Solar System Components

The sun

The sun is the power source that dominates the solar system. Their gravitational force keeps the planets in orbit and their light and heat make life on Earth possible. Earth is on average about 150 million kilometers from the Sun, the distance covered by light in 8 minutes. All other stars are located much further apart.

Scientific observations indicate that the sun is a star of medium brightness and size, and that there are countless larger and brighter stars in the sky, but luckily, the brightness, size and distance were accurate for our planet to develop forms of light. Life like ours.

The Sun has 99.9% of the matter of the entire Solar System. This means that all the other stars in the System together add up to only 0.1%.

Sun Composition

The Sun is a huge sphere of incandescent gas consisting essentially of hydrogen and helium, with a diameter of 1.4 million kilometers.

The volume of the sun is so large that it could hold more than 1 million planets the size of ours. To equalize its diameter, it would be necessary to place 109 planets like the earth next to each other. In the center of the star is the nucleus, whose temperature reaches 15 million degrees centigrade and where the nuclear fusion process by which hydrogen becomes helium occurs. Already on the surface the temperature of the Sun is about 6,000 degrees Celsius.