Across
- 1. a big ball of hot gases
- 2. a person that is exploring space
- 3. a continuous area or expanse which is free
- 4. planets that are not sustainable to a human body
- 6. agency responsible for the space program
- 8. a celestial body resembling a small planet
- 11. conclusion reached on the basis of evidence and reasoning
- 12. when moon moves into the earths shadow
- 13. the biggest star in the earths orbit
- 17. the rate at which an entity such as a star completes cycles of rotations
- 19. a big airplane that goes into orbit to do space exploration
- 21. a big rock in space heading towards the earth
- 22. a moon, planet, or machine that orbits a planet or a star
- 23. a rock falls from space to earth
- 25. the shadow cast by the earth or moon over an area experiencing a partial eclipse
- 26. when light encounter a discontinuity in the medium through which it is being transmitted
- 27. the universal force of attraction acting between all matter
- 28. a ring that all our planets follow
- 29. cosmetic snow balls of frozen gases, rock, and dust that orbit the sun
Down
- 1. investigation out of our orbit
- 3. an eclipse in which the sun is obscured by the moon
- 5. the angle between the planet's rotational axis and its orbital axis
- 7. is the earths only satellite
- 9. the moon before getting smaller
- 10. piece of technology that is in space and orbits around earth in 90 minutes
- 14. the degree of compactness of a substance
- 15. phase that is starting the moon phase
- 16. a phase of the moon almost finishing its cycle
- 18. a building or place given over to or equipped for observation of natural phenomena
- 20. a big camera that can see all the way out of our orbit
- 24. before a full moon and after a new moon