Space Key Words

2. A ball of gases in which nuclear reactions are occurring. Our star is called the Sun.
3. When an object spins it is said to be rotating
6. Rock that burns up as it enters the Earth’s atmosphere at high speed
9. On an angle
10. When something is moving in a circle around another object, such as the way the Earth circles the Sun, it is said to revolve around that object
11. Imaginary line through the centre of an object in space; the object rotates around this axis
13. Half of a sphere; the earth is divided into the northern hemisphere and the southern hemisphere
15. The time taken for a planet to make one complete turn on its axis
16. Ball of ice and dust orbiting the Sun. It has a head and a tail

1. A large collection of stars held together by gravity
4. Path followed by an object in space as it revolves around another object
5. Small, rocky body that orbits the Sun between Mars and Jupiter
7. Imaginary line that circles the middle of Earth dividing it into the two hemispheres
8. A planet’s natural satellite
12. The time taken for a planet to make one complete orbit around the Sun
14. A large body of rock or gas that moves around a star e.g. Earth