What is the solar system?
The solar system is defined as a collection of planets and other heavenly bodies - such as asteroids, comets and meteors - that orbit the central star. Mostly, when we talk about the solar system, we are talking about the Earth is part of: a group of planets and other celestial bodies that circulate the star we call the sun.
In our solar system, the celestial bodies that surround the sun and are held by its gravity, evident dwarf planets and natural satellites, as well as asteroids, comets and meteors. Now it is believed that there are eight planets that are fine from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Although he considered the planet for many years, Pluto was reclassified in 2006 and is now called the dwarf planet.
Planets are now defined by the International Astronomical Union according to several criteria. In order to be considered a planet, the heavenly body must:
- will not be a star
- oorbit and star
- to have an HMOit is almost spherical
- cleaned their orbit of other objects
The planets in our solar system have much in common: they all turn on their axis as they revolve around the Sun in the same direction. However, the planets in our solar system have different physical properties and based on these qualities and their arrangement in the universe are commonly grouped into inner planets and Jovian planets. Jove is an alternative name for God Jupiter.
The inner planets of our solar system - the nearest sun - are mercury, Venus, Mars and Earth. These planets are smaller and denser, have solid crusts and molten interiors. Three out of four - all except Mercury - have a gaseous atmosphere. Jovian planets are larger and less dense, with strong atmospheres.
The Gravitational Stroke of the Sun is responsible for the elliptical orbit of the planets in our System System. Johannes Kepler first described the planetary movement overthe council at the beginning of the 16th century. It was Isaac Newton, who has shown that Kepler's laws of planetary movement relate to other celestial bodies in the solar system and were the result of the gravitational force of the Sun.