Table of Contents

• 1 A Universe of Life?
• 2 The Science of Life in the Universe
• 3 The Universal Context of Life
• 4 The Habitability of Earth
• 5 The Nature of Life on Earth
• 6 The Origin and Evolution of Life on Earth
• 7 Searching for Life in Our Solar System
• 8 Mars
• 9 Life on Jovian Moons
• 10 The Nature and Evolution of Habitability
• 11 Extrasolar Planets: Their Nature and Potential Habitability
• 12 The Search for Extraterrestrial Intelligence
• 13 Interstellar Travel and the Fermi Paradox
• Epilogue: Contact – Implications for the Search and Discovery

About the Author

Jeffrey Bennett

Jeffrey Bennett, a recipient of the American Institute of Physics Science Communication Award, holds a B.A. in biophysics (UC San Diego), and an M.S. and Ph.D. in astrophysics (University of Colorado). He specializes in science and math education and has taught at every level from preschool through graduate school. Career highlights including serving 2 years as a visiting senior scientist at NASA headquarters, where he developed programs to build stronger links between research and education, and proposing and helping to develop the Voyage scale model solar system on the National Mall (Washington, DC). He is the lead author of textbooks in astronomy, astrobiology, mathematics, and statistics, and of critically acclaimed books for the public including Beyond UFOs (Princeton University Press, 2008/2011), Math for Life (Bid Kid Science, 2014), What Is Relativity? (Columbia University Press, 2014), and On Teaching Science (Big Kid Science, 2014). He is also the author of six science picture books for children, including Max Goes to the Moon, The Wizard Who Saved the World, and I, Humanity; all six have been launched to the International Space Station and read aloud by astronauts for NASA’s Story Time From Space program. Dr. Bennett lives in Boulder, CO with his wife, children, and dog. His personal website is www.jeffreybennett.com.

Seth Shostak

Seth Shostak earned his B.A. in physics from Princeton University (1965) and a Ph.D. in astronomy from the California Institute of Technology (1972). He is currently a senior astronomer and Director of the Center for SETI Research at the SETI Institute in Mountain View, California, where he helps press the search for intelligent cosmic company. For much of his career, Seth conducted radio astronomy research on galaxies and investigated the fact that these massive objects contain large amounts of unseen mass. He has worked at the National Radio Astronomy Observatory in Charlottesville, Virginia, as well as at the Kapteyn Astronomical Institute in Groningen, the Netherlands (where he learned to speak bad Dutch). Seth also founded and ran a company that produced computer animation for television. He has written more than four hundred popular articles on various topics in astronomy, technology, film, and television. A frequent fixture on the lecture circuit, Seth gives approximately 70 talks annually at both educational and corporate institutions, and he is also a frequent commentator on astronomical matters for radio and television. His book Confessions of an Alien Hunter: A Scientist’s Search for Extraterrestrial Intelligence (National Geographic, 2009) details the latest ideas, as well as the personal experience of his day job. When he’s not trying to track down aliens, Seth can often be found behind the microphone, as host of the SETI Institute’s weekly one-hour radio show about science, Big Picture Science.