Across
- 3. Color of star that is the coolest
- 6. Color of star that is the hottest
- 7. first element present in our universe
- 9. Planet known as the Red Planet because of its red rocky surface
- 11. The sun is a...
- 12. Planet known as Earth's twin because it is similar in size
- 14. name of the largest stars
- 15. Pluto is considered to be a _____ planet
- 16. an object that orbits a planet
- 19. force that helped with the formation of the sun and planets
Down
- 1. A large group of stars, gas, and dust is called a ...
- 2. The color of a star depends on its
- 4. Majority of the universe is made of this type of energy
- 5. Smallest planet in the solar system
- 8. Process that provides the energy for stars
- 10. A star is born in a cloud of gas and dust called a ...
- 13. Name of the scientific theory that explains how the universe was created
- 17. Our Sun and solar system lies within the ____ arm of the Milky Way galaxy
- 18. Name of the only planet that supports life (so far)