Across
- 2. Outermost region of the Sun's atmosphere
- 7. A device placed into orbit on purpose
- 8. A spacecraft
- 10. Earth's only natural satellite
- 13. A __ planet is made out of rocks and metal
- 15. An expert of astronomy
- 16. Using the Sun as the center of the universe
- 18. A tiny rocky object that circles the sun
- 20. Earth puts minor shadow over outer region
- 23. Lunar hemisphere that meet opposite of Earth
- 24. A star in the center of the Solar System
- 25. the sea's alternating rising and dropping
- 26. the first lunar phase
- 29. When visible surface of the moon is partial
- 30. A solid substance's mass per unit volume
Down
- 1. System of 8 planets arranged in orbital path
- 3. a celestial body not able to complete orbit
- 4. A celestial object passes another's shadow
- 5. Represents moon in the first quarter
- 6. The force between all matter
- 9. Light or sound waves returning from surface
- 11. A body's repeated passage through space
- 12. More than half, less than fully illuminated
- 14. A sunspot's dark central region that cast
- 17. the Earth as the center of the universe
- 19. Cause to move in a circle around an axis
- 21. Go around in a circular path
- 22. Piece of rock/metal on the ground from space
- 27. The phase anytime before full&after new moon
- 28. A celestial body made of ice and dust