Across
- 3. person trained to travel and work in space
- 4. holes or deep dents in the surface of a moon or planet
- 7. solar system objects made of dirty ice and frozen gases that orbit the sun
- 8. person who studies outer space
- 10. the changes in water levels in the oceans caused by the moon's gravity pulling on the Earth.
- 11. a piece of equipment with a long tube and lenses that helps make very distant objects look closer
- 12. the time it takes Earth to spin around once so that one full day and night occur
- 14. the path that a planet or other object takes when traveling around the sun, or the path a satellite takes around a planet
- 15. an area on the moon where people could live and work
Down
- 1. natural or man-made objects that orbit around a planet
- 2. the gases that surround a planet, moon, or star
- 5. the sun and everything that is in orbit around it
- 6. a part or section of a spacecraft used for certain purpose
- 9. the name for the U.S. space missions between 1961 and 1975 that had the goal of landing people on the moon. asteroid, a rocky object that orbit the sun
- 13. a hand-held instrument used to view distant objects using both eyes at once