Space Terminology Crossword

This printable crossword puzzle on the topic of Astronomy & Space has 21 clues. Answers range from 4 to 12 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

The Sixth Planet
A collection of stars
A Dwarf Planet
The study of the solar system
The Eighth Planet
Solid object moving through space
The fifth Planet
Darkening of the moon
Closest planet to the sun
The ratio of the mass, of an object to its volume
The red Planet
The planet we live on
The distance from one side of a circle to the other
The central region of a planet
A ball of rock and ice
People who study our planet
Neptune largest moon
When the moon passes between the earth and the sun
The hottest planet
A large brilliant meteor that explodes
A compact Quaser