Across
- 5. the force in space that pulls things closer together
- 6. the end stage of a massive high mass star's lifespan
- 7. the type of star which has a longer lifespan
- 9. the other name for the outer planets (hint: related to their contents)
- 10. the name of our planet
- 13. the proposed arrangement of our solar system with the earth in the middle
- 14. the astronomer and author of three laws concerning motion in space
- 15. a cloud of dust and gas in space
- 16. the type of nuclear reaction which the sun runs off of
- 18. the dark blue planet which has white streaks from methane crystals
- 19. the planet closest to the sun
- 21. the end stage of a low mass star's lifespan
- 23. the name for matter which is not visible but has gravity
- 25. the largest planet
- 26. the name for the planets, their moons, and the sun collectively
- 27. the planet that is closer to the sun than earth, but further than mercury
Down
- 1. the second step to forming a star
- 2. the theory of the instant creation of the universe from an explosion
- 3. the "red" planet
- 4. the arrangement of our solar system with the sun in the middle
- 8. the shape of the orbit of planets in our solar system
- 11. the planet known for its rings
- 12. the end stage of a normal sized high mass star's lifespan
- 17. the star at the center of our solar system
- 20. the planet which comes before neptune, but after saturn
- 22. the name for the energy that drives the acceleration of the expansion of the universe
- 24. the type of star which has a shorter lifespan