Inner Planets Crossword

This printable crossword puzzle on the topic of Astronomy & Space has 12 clues. Answers range from 4 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

The four planets closest to the sun
Closest planet to the sun
Planet with no moons
Planet that living things live on
Planet with a red surface
Sunlight getting reflected by the surface
Infrared radiation trapped in the atmosphere
Measurement that shows amount of radiation
Cliff produced by ocean or faulting
Also known as planet earth
One of the 2 moons of Mars
One of the 2 moons of Mars