Across
- 3. Any of the nine large heavenly bodies revolving around the sun and shining by reflected light
- 4. A body in space made up of a central mass and a bright tail
- 6. A building or room in which the planetary system is represented
- 9. A person trained for travelling in space
- 10. An instrument to see distant objects in space
Down
- 1. The earth's natural satellite
- 2. A station orbiting the earth, supporting a crew and used for helping other spacecraft, for observation and research
- 5. A hot and usually bright body in space, such as the sun
- 7. A space capsule or vehicle put into orbit
- 8. An unidentified flying object