The sci-fi genre has captured my imagination since I was a young kid so I was ecstatic when I discovered that among the thousands of adult coloring books on Amazon there was a small, yet good, selection of sci-fi adult coloring books. Some scrupulous research later and here are my top 3 sci-fi adult coloring book finds that will make a perfect gift for the sci-fi fan in your life. Star Trek The Next Generation Adult Coloring Book Alright Star Trek fans this one is for you! This coloring book...

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