The Seventh Landing: Going Back to the Moon, This Time to Stay

Escaping from Eden: Does Genesis Teach that the Human Race was Created by God or Engineered by ETs?

Earths of Distant Suns: How We Find Them, Communicate with Them, and Maybe Even Travel There

The Scars of Eden: Has Humanity Confused the Idea of God with Memories of ET Contact?

Drifting on Alien Winds: Exploring the Skies and Weather of Other Worlds

Special Relativity and Classical Field Theory

Planet Earth, Past and Present: Parallels Between Our World and its Celestial Neighbors

Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime

Lords of the Ice Moons: A Scientific Novel

Pterosaurs: Natural History, Evolution, Anatomy

Picture This!: Grasping the Dimensions of Time and Space

Europa’s Lost Expedition: A Scientific Novel

The Biggest Ideas in the Universe: Space, Time, and Motion

Ice Worlds of the Solar System: Their Tortured Landscapes and Biological Potential

Sasquatch: Legend Meets Science

Foundations of General Relativity: From Einstein to Black Holes

Antarctica: Earth's Own Ice World

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