Advanced Space-themed Crossword Puzzle
Listed Items
- 1.  Person who travels in outer space
 
- 2.  A planet that is the third closest to the sun
 
- 3.  A celestial system of stars and gas
 
- 4.  The sum total of all matter and energy that exists in the cosmos
 
- 5.  A strange object that appears in the sky
 
- 6.  A heavenly body that emits light and heat
 
- 7.  Not from this planet
 
- 8.  It can appear as a bright star with a tail
 
- 9.  A darkening of the sun or moon