Merlin's Tour of the Universe: A Traveller's Guide to Blue Moons and Black Holes, Mars, Stars and Everything Far

Black & White Publishing Blue/Black Merlin's Tour Of The Universe: A Traveller's Guide To Moons And Holes, Mars, Stars And Everything Far

A Seriously Humorous Voyage Through the Universe: Learn about Black Holes, Time Travel, Quarks, Spooky Action, and a Heck of a Lot More

Black Holes Book for Kids: Exploring Astrophysics, Special Relativity, General Relativity, and Quantum Physics of Black Holes

Just Visiting This Planet: Merlin Answers More Questions about Everything under the Sun, Moon and Stars