Neil F. Comins
What If the Moon Didnt Exist
Discovering the Universe
Discovering the Essential Universe
Discovering the Essential Universe
What If the Earth Had Two Moons?: And Nine Other Thought-Provoking Speculations on the Solar System
Discovering the Essential Universe & The Once and Future Cosmos
Discovering the Universe, CD-Rom, Star & Planet Locator, Scientific American Reader; Cosmology & Solar System