Space

5. Huge space clouds of dust, rock and gas that eventually form stars
6. When Gravity pulls the dist together and it starts to get hot
8. When a red supergiant begins to die it creates a huge powerful object that sucks other planets and stars into it. What is it called?
12. Space travel without astronauts is called....
13. What is the shape of all planets orbits?
14. The star at the centre of our solar system
15. What is the shape of an Asteroids orbit?
16. What is the gas that fuels nuclear fusion in stars?

1. The force that holds all the planets and asteroids in orbit
2. the fourth planet from the sun
3. When nuclear fusion starts and there is little change in temperature or size the star is called a .....
4. What is made of Millions of different Galaxys?
7. What is made of Millions of different solar systems?
9. what would be left on the earths surface if a meteor was to strike?
10. What gas is made by nuclear fusion?
11. What could a meteor strike cause to happen to lots of the earths species?