The Solar System is an ensemble of celestial bodies in the Milky Way Galaxy made up of the Sun, nine planets, twenty seven satellites, many asteroids and comets that all revolve around the Sun. The planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
2. The Sun
The Sun is the central star of the Solar System. It has its own light and gives us on Earth both light and warmth, as well as to all other celestial bodies of the System.
The size of the Sun is immense. If we pretend that the Sun is a sphere of one meter in diameter, the Earth would be the size of a pellet.
The Sun is a yellow star composed of hydrogen (81 percent), heliuam (18 percent), and other gases. It is made up of the following parts:
- The nucleus, which has a very high temperature.
- The photosphere, which is a gaseous mass that wraps the nucleus and where big sized spots have been discovered.
- The chromosphere, which is reddish in color and where there are huge suppliers of incandescent gas, called solar protuberances.
- The crown, which is the external wrap of the gases.
Apparently, the Sun revolves around the Earth, but backwards. Earth and all other celestial bodies of the System revolve around the Sun. It has a translational movement towards the Lyra star, and it also rotates on its own axis.
A) Indicate whether the following statements are true or false