Across
- 3. a objects resistance to motion
- 4. largest modular space station
- 5. where gravity is to strong for anything to escape
- 9. unit of astronomical distance
- 12. flying rock in space
- 13. star that appears almost directly above the Earth's rotational axis
- 14. giant cloud of dust and gas in space
- 17. sun
- 19. amount of time it takes the ISS to travel around earth
- 21. space probe launched by NASA on September 5, 1977
- 24. planet we live on :)
- 25. 12 _____ are in our solar system
Down
- 1. curved motion that planets take around the sun
- 2. group of stars that form a pattern
- 6. 3rd brightest star in our night sky
- 7. element with symbol H
- 8. donuts shaped ring of icy objects around the sun
- 10. space teloscope
- 11. amount of matter in a object
- 15. galaxy our solar system is in
- 16. _____ shower
- 18. barred spiral galaxy
- 20. moon
- 22. what keeps us on the ground
- 23. system of stars