peek at solution solve puzzle
quality: difficulty: solvability: line & color logic only
Puzzle Description:
When a planet or moon always show the same face to the body which it orbits. Caused by gravitational tides slowing the rotation until the period of rotation is equal to the period of revolution.
#1: Teresa K (fasstar) on Nov 13, 2011
I like your teaching style, Brian. :-) Do your students get extra credit for solving your puzzles?#2: Brian Bellis (mootpoint) on Nov 14, 2011
Thank you. What a fine idea.#3: Trish217 (Trish217) on Nov 14, 2011
nice puzzle. easy solve.
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