Faster, Better, Cheaper: Low-Cost Innovation in the U.S. Space Program

Astrophysics for People in a Hurry

Financing the New Space Industry: Breaking Free of Gravity and Government Support

The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory

Origins: Fourteen Billion Years of Cosmic Evolution

Robots In Space: Technology, Evolution, and Interplanetary Travel

Imminent: Inside the Pentagon's Hunt for UFOs

The Extraterrestrial Species Almanac: The Ultimate Guide to Greys, Reptilians, Hybrids, and Nordics

Rocket Men: The Daring Odyssey of Apollo 8 and the Astronauts Who Made Man's First Journey to the Moon

Wizard:: The Life and Times of Nikola Tesla

New Scientist: The Origin of (almost) Everything

The Science of Interstellar

The Magic of Reality: From the multi-million bestselling author of The God Delusion

Space Chronicles: Facing the Ultimate Frontier

Reentry: SpaceX, Elon Musk, and the Reusable Rockets that Launched a Second Space Age

The Mars Mystery: The Secret Connection Between Earth and the Red Planet

Endurance: A Year in Space, A Lifetime of Discovery

Kelly: More Than My Share of It All

Just Six Numbers

Isaac Asimov's Guide to Earth and Space