Lesson 3



The Solar System


The Solar System is a group of celestial bodies. It is made up of the Sun (the centre) and the other bodies.

     - Planets orbit the Sun.
     - Satellites orbit planets. The Moon is the Earth's satellite.
     - Comets orbit the Sun.


Eight planets orbit the Sun:

      - The inner planets: the planets  closest to the Sun. They are small, rocky planets. They are Mercury, Venus, Earth, Mars.

      - The outer planets: the planets farthest away from the Sun. They are big planets made mostly of gases. They are Jupiter, Saturn, Uranus, Neptune.



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Label

Know the planets

Celestial bodies

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Solar System

Solar System II

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