Guests

A native of Baltimore, Maryland, Gilbert V. Levin graduated from Forest Park High School and entered the Johns Hopkins University School of Engineering in 1941. In 1944, during World War II, in his junior year, he joined the U.S. Maritime Service, where he trained as a shipboard radio operator....

Emily Lakdawalla is an internationally admired science communicator and educator, passionate about advancing public understanding of space and sharing the wonder of scientific discovery. 

Emily originally studied geology at Amherst College, Massachusetts, working with professor Tekla...

John is a veteran novelist, author of seven political romances as well as a short history of the Republican Party. Born in Bryn Mawr, Pennsylvania, in 1948, John attended Lower Merion High School and Princeton University. In 1976 he was graduated from Union Theological Seminary. John is married...

John R. Bucknell graduated from Cleveland State University in 1995 with a bachelor’s in mechanical engineering and the University of Michigan in 1999 with a master’s in systems engineering and is a licensed professional engineer.  He has led advanced engineering teams at Chrysler and General...

Salvatore T. “Tory” Bruno is the president and chief executive officer for United Launch Alliance (ULA). In this role, Bruno serves as the principal strategic leader of the organization and oversees all business management and operations. Prior to joining ULA, he served as the vice president and...

Bill Simon is currently a sales engineer doing business development and sales for high-technology companies. His experience includes over 14 years as a manufacturer's representative in Southern California specializing in complex RF and microwave components, composites and instrumentation. From...

Rand Simberg is a former project manager with Rockwell International having previously worked at the Aerospace Corporation. At Rockwell, he worked on a number of advanced concepts, including solar power satellites, launch and orbit transfer systems, space tethers, and lunar resource utilization...

Bruce Cahan is a Consulting Professor at Stanford University’s School of Engineering, co-founder of Stanford’s Sustainable Banking Initiative, a former CodeX Fellow at Stanford’s Center for Legal Informatics, and an Ashoka Fellow. In Silicon Valley, Bruce is creating GoodBankTM(IO), as a “...

Bruce Pittman is currently working as a contractor at the NASA Ames Research Center in Silicon Valley where he is the Chief System Engineer in the NASA Space Portal Office.  In this position he supports the Space Technology Mission Directorate at NASA Headquarters on programs ranging from...

Robert Zimmerman is a well known and respected space historian and author. He posts regularly at his website, http://behindtheblack.com, on space, science, and other matters relating to cultural and political issues. Mr. Zimmerman is also an award winning...

Dr. Jason Kalirai is an astronomer at STScI, He studies the formation and evolution of stars and galaxies in the local universe. His current research interests involve imaging and spectroscopic observations of resolved stellar populations, such as nearby star...

Julian Nott is a founder of the modern ballooning movement and one of its most creative and innovative exponents. As of 2017 he has broken 79 World Ballooning Records, and 96 British Records, including exceeding 55,000 feet in a hot air balloon. His records span many classes - hot air, helium,...

Laura Montgomery specializes in regulatory space law, with an emphasis on commercial space transportation and the Outer Space Treaties. She provides expert opinion on the Commercial Space Launch Act, its implementing regulations governing the launch of launch

vehicles, the reentry of...

John is a veteran novelist, author of seven political romances as well as a short history of the Republican Party. Born in Bryn Mawr, Pennsylvania, in 1948, John attended Lower Merion High School and Princeton University. In 1976 he was graduated from Union Theological Seminary. John is married...

Dr. Ashwin Vasavada is the Project Science Director for MSL and the Curiosity Rover on Mars. You can read his full CV at http://vasavada.net/resume.html.

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