Planets in Our Solar System Crossword

This printable crossword puzzle on the topic of Astronomy & Space has 10 clues. Answers range from 2 to 17 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

How long is a Mercury year?
What is the Great Red Spot on Mercury actually?
What types of liquid was found in lakes on Saturn?
Which Jupiter moon has the thinnest astmosphere?
Which Jupiter moon has liquid water and a hot core?
Which Jupiter moon has a yellow sulfur-rich surface.
Which Jupiter moon has many conditions that could originate life?
What is the mantel of Uranus like?
What is the rain on Venus made of?
What is Mercurys core made of?