Across
- 4. range of different colors with different wavelengths.
- 9. distance that light travels in one year.
- 10. motion of a planet on its axis.
- 11. sun is at the center.
- 12. Mars orbit.
- 13. meteoroid enters earths atmosphere, friction with air creates heat.
- 14. a chunk of rock or dust in space.
- 18. huge group of stars.
- 19. movement of an object around another object.
- 21. explosion of a dying supergiant star.
- 23. pattern of stars in the sky.
- 24. rocky objects too small and too numerous to be considered full-fledged.
Down
- 1. all objects are attracted to each other.
- 2. all of space and everything in it.
- 3. large cloud of gas & dust in space.
- 5. earliest stage of a star.
- 6. apparent change in position of an object when you look at it from different places.
- 7. formed the building blocks of the planets.
- 8. breaks light into colors.
- 13. meteoroids that pass through atmosphere and strike earths surface.
- 15. a building that contains one or more telescopes.
- 16. a natural satellite that revolves around a planet.
- 17. enormously bright distant galaxy with a giant black hole at its center.
- 20. Earth is at the center.
- 22. loose collections of ice, dust, & small rocky particles.