- In the Depths of the Universe
- The Universe
- The Structure and Evolution of Stars
- The Earth as a Planet
- Interplanetary Flights of Space Vehicles
- The Evolution of the Solar System
- The Origin and Evolution of the Planetary System
- The Physics of Space Weather: From Basic Plasma Processes to Applications to Earth and Other Planets
- Cosmogony: The Universe, The Sun, and the Earth's Place In It
Books and articles on Religion and Spirituality:
- The Sacred Texts of the East: A Guide to the Scriptures of the Orient
- The World of the Bible
- The Book of Job: A Commentary
- The History of Religion
- The Philosophy of Religion
- God and the Universe: A Dialogue
- The Problem of Evil
- Prayer: Its Power and Purpose
- The Search for God
- The Meaning of Life
- Death and Immortality
- The Great Questions of Philosophy
Books and articles on Health and Well-Being:
- The Book of Herbal Medicine
- The Natural Healing Diet
- The Power of Positive Thinking
- The Art of Meditation
- The Science of Yoga
- The Mind-Body Connection
- Stress Management
- Healthy Aging
- The Path to Happiness
- Living in the Present Moment
- The Art of Mindfulness
Books and articles on Science, Education, and Technology:
- The History of Science
- The Philosophy of Science
- The Scientific Method
- The Nature of Reality
- The Future of Science
- Quantum Mechanics: A Beginner's Guide
- The Theory of Relativity: A Beginner's Guide
- The Big Bang Theory: A Beginner's Guide
- The Search for Extraterrestrial Life
- Artificial Intelligence: A Beginner's Guide
- Robotics: A Beginner's Guide
- The Future of Education: Technology, Innovation, and Reform
- The Future of Technology: Predictions and Possibilities
- Ethics in Science and Technology: A Primer