Across
- 4. small space rock moving through our solar system
- 6. a mixture of hydrogen, helium, and oxygen.
- 9. when the moon is covered by the earths shadow
- 12. a state at which all possible states of a system is shown
- 13. the two times of the year at which the sun is the farthest away from the earth
- 18. States that every particle attracts every other particle
- 20. an object that orbits a planet
- 21. a cycle that starts at January 1st and ends December 31st thus making it 360 days in a year
- 23. a space of which illumination is partial
- 24. a mixture of ice and dust
- 26. An object that orbits a star, is large enough to have become rounded by its own gravity
- 27. A streak of light in the sky produced by a meteoroid burning by the earth's atmosphere
Down
- 1. the rise and fall of the sea
- 2. a rotation around a star or a planet
- 3. occurs when the moon is between earth and the sun
- 5. the darkest part of a planets shadow
- 7. the rotation around a star
- 8. a group of stars in a shape of something.
- 10. a hole either on the earth or moon, caused by an impact
- 11. occurs when the sun and the moon are aligned with earth
- 14. the two times of the year at which the sun is the closest to earth
- 15. A force that attracts objects towards planets with varying results
- 16. an imaginary line that expands from north to south
- 17. when the difference from low tide and high tide are minimal
- 19. how a planet moves around it's axis
- 22. partial or total covering of an object.
- 25. large and dark basaltic plains on the moon