Across
- 3. hottest planet
- 4. what keeps the planets in orbit
- 7. Largest planet
- 8. what is the name for scientists who focus on observations of the skies?
- 11. what do we call the sun and all the space objects in orbit around it
- 13. What all planets do around the sun
- 14. How many stars are there in our solar system
- 15. can be seen in the distance
Down
- 1. the first human to journey into outer space
- 2. closest to sun
- 5. source of light
- 6. an optical instrument using to observe distant objects
- 9. deflects the light of the sun
- 10. a rocky worlds revolving around the sun that is too small to be called a planet.
- 12. Earth is located in which galaxy