Space and Planets

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Across
  1. 2. This planet orbits the Sun every 84 Earth years, and was the first planet to be discovered by using a telescope.
  2. 4. The 'red' planet, which is half the size of Earth and takes 1.9 years to orbit the Sun.
  3. 6. This planet does not have any moons or rings, and is the hottest planet in the solar system.
  4. 7. This planet orbits the Sun once every 11.8 Earth years and has the most moons (67).
  5. 10. The type of planets that are mostly composed of rocks and metals.
  6. 12. The name of our Solar System, which contains billions of stars and nine plants.
  7. 13. The only planet that contains life, and was previously believed to be the centre of the universe.
Down
  1. 1. Includes all existing matter, thousands of galaxies and is always getting bigger.
  2. 3. The centre of our galaxy, in which each planet orbits around.
  3. 5. This planet is known for its huge ring system, discovered by Galileo Galilei.
  4. 8. The closest planet to the Sun, which only takes 88 days to orbit around the Sun.
  5. 9. Planets that are mostly made up of gasses, such as helium and hydrogen.
  6. 11. This planet was once known as the ninth planet, but is now known as the largest dwarf planet.