Planetary Protection: Safeguarding Worlds from Biological Contamination

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

Origin of Life: From Chemical Soup to Living Systems

Cosmos

Molecular Evolution: From Simple Chemicals to Complex Life

Billions & Billions: Thoughts on Life and Death at the Brink of the Millennium

Biogeology: Life's Interaction with Planetary Processes

Human Universe

Habitable Zones: Understanding Where Life Can Thrive in the Universe

The Elegant Universe

Planetary Habitability: Factors That Make Worlds Suitable for Life

The Fabric of the Cosmos: Space, Time and the Texture of Reality

Prebiotic Chemistry: The Chemical Steps Toward Life's Beginning

Origins: Fourteen Billion Years of Cosmic Evolution

Space Biology: How Life Adapts to the Cosmic Environment

Our Mathematical Universe: My Quest for the Ultimate Nature of Reality

Terraforming: Engineering Planets for Human Habitation

The Varieties of Scientific Experience: A Personal View of the Search for God

Biosignatures: Detecting Life's Chemical and Physical Traces Across the Cosmos

The Planets