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  | | Our solar system | | | |
  | | Our solar system is really, really big! | | | |
  | | It is also very, very old. | | | |
  | | Scientists think our solar system is about 5 billion years old. | | | |
  | | Scientists who study our solar system are called astronomers. | | | |
  | | People who explore the solar system are called astronauts. | | | |
  | | Astronomers and astronauts help us to learn about our solar system. | | | |
  | | Our solar system is made up of the Sun and 9 planets. | | | |
  | | There are also moons, comets, and asteroids. | | | |
  | | Most of our solar system is empty space filled with gas and dust. | | | |
  | | The planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. | | | |
  | | Some of the planets have moons. | | | |
  | | Saturn has 3 rings. | | | |
  | | The planets orbit around the sun. | | | |
  | | The moons orbit around their planets. | | | |
  | | In drawings the planets look very close to each other. | | | |
  | | They aren't! | | | |
  | | They are very, very, far away from each other. | | | |
| | solar system | | | Vệ tinh. |
| | astronomer | | | Nhà thiên văn học |
| | comet | | | Sao chổi |
| | asteroid | | | Thiên thạch |
  | | planet | | | Hành tinh |
| | Mercury | | | sao Thuỷ |
| | Venus | | | Sao Kim |
| | Mars | | | sao Hải vương |
| | Jupiter | | | Sao Hoả |
| | Saturn | | | Sao Thổ |
| | Uranus | | | Sao Thiên Vương |
| | Neptune | | | Sao Mộc |
| | Pluto | | | sao Diêm vương |
| | moon | | | Mặt trăng |
| | sun | | | Mặt trời |
| | Earth | | | Trái đất |
| | star | | | Hình ngôi sao |