Advanced Space-themed Crossword Puzzle
Listed Items
- 1.  A transportation device used to reach outer space
 
- 2.  The study of the physical nature of stars and other celestial bodies
 
- 2.  A visitor from another planet
 
- 3.  A huge burning ball of gas in the sky
 
- 4.  The attraction between two objects with mass
 
- 5.  A gigantic group of stars, gas, and dust held together by gravity
 
- 6.  A link between two distant points
 
- 7.  A stroll in the vacuum of space
 
- 8.  A small, rocky object that travels around the sun
 
- 9.  It takes about 29 days to orbit Earth
 
- 10. A small, icy object that orbits the sun
 
- 11. A violent explosion of a star
 
- 12. A building used to study the universe
 
- 13. A point in the year when the sun reaches its greatest declination
 
- 14. A device used to view distant objects
 
- 15. An object seen in the sky without explanation
 
- 16. Expert in the field of astronomy
 
- 17. Course taken by a spacecraft around a celestial body