Crossword Puzzle: Solar System Review

This printable crossword puzzle on the topic of Astronomy & Space has 17 clues. Answers range from 3 to 8 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Largest planet in our solar system.
Two things that are similar in size and shape are called?
The red planet.
Humans live here.
The sun is a....
This planet is the closest to the Earth.
The furthest planet form the sun is?
What does Saturn have around it?
How many gas planets are there?
Neptune is this color.
How many moons does Mars have?
Made of rock.
To go round.
First, main or most important
How many primary planets are there?
Mercury is ______ planet.
Uranus is _____ planet from the sun.