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Geraint Lewis

Geraint F. Lewis is a Professor of Astrophysics at the Sydney Institute for Astronomy, part of the University of Sydney’s School of Physics. He is best known for his work on dark energy, gravitational lensing, and galactic cannibalism, the study of galaxies which collide and absorb parts of each other.​ ​At Sydney, Lewis is head…

Mario Livio

Mario Livio is an Israeli-American astrophysicist and an author of works that popularize science and mathematics. He is a Fellow of the American Association for Advancement of Science. From 1991 to 2015, he was an astrophysicist at the Space Telescope Science Institute, which conducts the scientific program of the Hubble Space Telescope and the James…

Stephen Barr

Stephen M. Barr is an American author and professor in the Department of Physics and Astronomy at the University of Delaware, and a member of its Bartol Research Institute. He is also President of the Society of Catholic Scientists. Barr does research in theoretical particle physics and cosmology. In 2011, he was elected Fellow of…

James Hartle

James B. Hartle was Research Professor and Professor of Physics Emeritus at the University of California, Santa Barbara.  His scientific work was concerned with the application of Einstein’s relativistic theory of gravitation—general relativity—to realistic astrophysical situations, especially cosmology. He has contributed usefully to the understanding of gravitational waves, relativistic stars, black holes, and the theory…

Steve Giddings

Dr. Giddings is a researcher and professor at the University of California at Santa Barbara, specializing in theoretical physics. His current research includes investigating the quantum nature of spacetime, and what happens to information that is sent into black holes. He studied mathematics and physics at the University of Utah, and then went to Princeton…

Laura Mersini-Houghton

Laura Mersini-Houghton is an Albanian-American cosmologist and theoretical physicist, and Professor at the University of North Carolina at Chapel Hill.  She is a proponent of the multiverse hypothesis, which holds that our universe is one of many. She argues that anomalies in the current structure of the universe are best explained as the gravitational tug…

Fred Adams

Fred Adams is a professor of physics at the University of Michigan. His work is in the general area of theoretical astrophysics with a focus on the study of star formation and cosmology. Adams is internationally recognized for his work on the radiative signature of the star formation process, the dynamics of circumstellar disks, and the theory…

Jill Tarter

Jill Tarter is the former Director of the Center for SETI Research at the SETI Institute. She earned her Bachelor of Engineering Physics Degree with Distinction from Cornell University and a MS and a PhD in Astronomy from the University of California, Berkeley. Tarter served as Project Scientist for NASA’s SETI program, the High Resolution…

Wojciech Zurek

Wojciech Hubert Zurek is a Polish-born naturalized American theoretical physicist and a leading authority on quantum theory, especially decoherence and non-equilibrium dynamics of symmetry breaking and resulting defect generation (known as Kibble-Zurek mechanism). He was educated in Kraków, Poland (MS. 1974) and Austin, Texas (PhD 1979). He spent two years at Caltech as a Tolman…

Steven Weinberg

Steven Weinberg is an American theoretical physicist and Nobel laureate in Physics for his contributions to the unification of the weak force and electromagnetic interaction between elementary particles. Weinberg received his Bachelor’s degree from Cornell University. He studied at the Niels Bohr Institute in Copenhagen, and earned his PhD in Physics at Princeton University. He…

Douglas Vakoch

Douglas Vakoch is the Director of Interstellar Message Composition at the SETI Institute, as well as the only social scientist employed by a SETI organization. He received his BA in Comparative Religion from Carleton College and his PhD in Clinical Psychology from SUNY Stony Brook. Vakoch leads the SETI Institute’s project to compose interstellar messages…

Max Tegmark

Max Tegmark is Professor of Physics at Massachusetts Institute of Technology. He holds a BS in Physics and a BA in Economics from the Royal Institute of Technology in Sweden. He also earned a MA and PhD in physics from University of California, Berkeley. Tegmark later returned to Europe and accepted an appointment as a…