The Multiverse: Time and Dimensional Travel Q&As: With Time and Dimensional Travel Exercises

A Brief History Of Time: From Big Bang To Black Holes

Building and Sending Interstellar Probes

The Black Hole War: My Battle with Stephen Hawking to Make the World Safe for Quantum Mechanics

Types of Rocket Propulsion and Potential Space Drives

The Planets

James Webb Space Telescope Mysteries: What Existed Before the Big Bang?

Existential Physics: A Scientist's Guide to Life's Biggest Questions

The Real Nature of Time: An Analysis of Physics, Prophecy, and Time Travel Experiences

Seven Brief Lessons on Physics

The TR-3B Black Manta: What is it Really?

New Scientist: The Origin of (almost) Everything: from the Big Bang to Belly-button Fluff

Fifteen Out of the Box Ideas which will Change the World

For the Love of Physics: From the End of the Rainbow to the Edge of Time---A Journey Through the Wonders of Physics

Aliens Are Already Among Us

Just Six Numbers

Exploring and Settling Our Huge Solar System

The Astronomy Book: Big Ideas Simply Explained

Isaac Asimov's Guide to Earth and Space