Across
- 2. clouds of dust and gas in space
- 5. closest planet to the sun
- 7. planet famous for its rings
- 10. object that orbits a planet, can be natural or artificial
- 11. first thing formed when a small/medium star 'dies'
- 12. object in space made of ice, it's tail points away from the sun
- 14. name for a star that's 'alive' our sun is currently in this
- 15. CMBR is short for this, left over from the big bang
- 17. name for light from stars being stretched out as the move away
- 18. round object that orbits a star, big enough to have its own gravity
Down
- 1. formed from large stars that have died
- 3. forms from a red giant that has cooled down
- 4. satellite that orbits above the same point of the Earth
- 6. area between Mars and Jupiter where most asteroids are found
- 8. small rocky object, mostly found inbetween Mars and Jupiter
- 9. ball of gas earliest step of making a star
- 13. largest planet
- 16. satellite that orbits the poles