Vocabulary N°8

1. Planet: A large body orbiting a star, such as the Sun.

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  Pluto is not consider now a planet.



2. Solar System: A star, such as the Sun, and all the objects orbiting it.



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  The solar system consists of the Sun and the planets.

3. Asteroid: A rocky,metallic object that orbits the Sun.



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  The asteroids are small solar system bodies orbiting in ther Sun.

4. Kepler´s laws: Laws that summarize the movement of the planets.



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  One of the Kepler´s Laws is the orbit of every planet is an ellipse with the Sun.