Across
- 2. A region of space with a gravitational field.
- 4. _____________ revolves around the Sun.
- 5. Lowest region in the atmosphere.
- 9. A very cold and windy planet.
- 10. One explanation of how the universe began.
- 12. Second largest planet in the solar system.
- 15. ____________ travel to space to discover and learn new things about the universe.
- 16. Known as the red hyper giant. One of the biggest stars in the universe.
- 18. The night sky is filled with ___________ that are far, far away.
- 20. ZOOM in and you can see the stars up close!
Down
- 1. The galaxy that contains our solar system is the ___________.
- 3. Divided into four primary layers.
- 6. Gives of light for all to see.
- 7. This transportation can take astronauts to space!
- 8. The distance that light travels in one year.
- 11. Some day people will try to land on _______.
- 13. A landscape that have features of the moon.
- 14. The troposphere is below this layer of Earth atmosphere.
- 17. Helps collect data and information about the universe.
- 19. Carbon dioxide is an example of this.