Space and Planets

3. This planet is known for its huge ring system, discovered by Galileo Galilei.
6. A part of space where the gravitational field is so intense, nothing is able to escape.
8. This planet orbits the Sun every 84 Earth years, and was the first planet to be discovered by using a telescope.
9. Planets that are mostly made up of gasses, such as helium and hydrogen.
10. The closest planet to the Sun, which only takes 88 days to orbit.
11. The 'red' planet, which is half the size of Earth and takes 1.9 years to orbit the Sun.
13. This planet orbits the Sun once every 11.8 Earth years and has the most moons (67).
15. The repeated course of a celestial object, around a star or planet.

1. The only planet that contains life, and was previously believed to be the centre of the universe.
2. A system of billions of stars, including dust and gas, held together by gravity.
4. The type of planets that are mostly composed of rocks and metals.
5. This planet does not have any moons or rings, and is the hottest planet in the solar system.
7. Includes all existing matter, a vast number of galaxies and is always expanding.
12. The centre of our galaxy, in which each planet orbits around.
14. This planet was once known as the ninth planet, but is now known as the largest dwarf planet.