Below you can find the With a diameter averaging about 7 miles it's the smaller of mars' 2 moons Jeopardy Words Answer. The answer to With a diameter averaging about 7 miles it's the smaller of mars' 2 moons has 6 letters. This clue belongs to the D in science category and is part of Jeopardy Word Level 2271. If you scroll near the bottom you will find other clues and answers part of level 2271