P1: The Earth in the Universe

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  • Created by: ghanshyam
  • Created on: 10-04-15 16:38

The Solar System

- The Star of our Solar system is the Sun.

- The are eight planets in our Solar System are spherical and have nearly circular orbits around        the sun.

- The four planets closest to the sun are solid rock; the four outer planets are gas giants, which      have their individual number of moons

- Asteriods are irregular lumps of rock, mostly orbit between Mars and Jupiter.

- Comets are small objects made of rocks and ice, witha elongated orbit around the sun.

- Dwarf planets, such as Pluto, are small lumps of rock that orbit around the sun.

- 99% of the Solar System's mass is the Sun.

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The Universe: distance and sizes

- The Sun is one of thousands of millions of stars in the Milky Way.

- The Milky Way is one of thousands of millions of galaxies which make up the Universe.

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