Across
- 5. The type of star our sun is now, and will remain for another 5 billion years
- 10. The distance from the Earth to the sun, also known as 1AU
- 12. Pluto was relegated to this classification in 2006
- 14. Object at the centre of our galaxy
- 15. The phenomenon that shows that all the other galaxies are moving away from us
- 16. The next closest galaxy to the milky way
- 17. Clouds of gas and dust where stars can form
Down
- 1. What a very large star will become when it runs out of Hydrogen to fuse
- 2. Planet that protects the others by attracting and absorbing impacts
- 3. The brightest star in the night sky, also called the dog star
- 4. What our sun will become when it runs out of hydrogen to fuse
- 6. Also known as Pulsar, super dense material made from protons and electrons combining
- 7. The planet that spins on it's side
- 8. A likely end to the Universe
- 9. Planet that once had an atmosphere and water but is now dry
- 11. The planet that is 430C on one side and -230C on the other
- 13. The region in the outer solar system that comets originate from
- 14. Huge explosion one in every galaxy about every 100 years
- 18. Has so much gravity that nothing can ever escape
