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Marc Rayman

Marc Rayman

Marc Rayman grew up in Toledo, Ohio and earned an A.B. in physics from Princeton University. His undergraduate work focused on astrophysics and cosmology. He received an M.S. in physics from the University of Colorado at Boulder, where he conducted investigations
in nuclear physics. He then performed research at the Joint Institute for Laboratory Astrophysics (JILA) on experimental tests of special relativity and atomic and laser physics, and received his Ph.D. there. He continued at JILA as a postdoctoral researcher. Throughout his time at JILA, he worked with Dr. John Hall, who subsequently won a Nobel Prize in Physics.

Dr. Rayman combined his scientific training with his lifelong study and passion for the exploration of space by joining NASA’s Jet Propulsion Laboratory in 1986. His work there has spanned a broad range, including optical interferometry missions to detect planets around other stars, design of a mission to return samples from Mars, a laser altimeter for Mars, the Spitzer Space Telescope, the development of systems to use lasers instead of radios to communicate with interplanetary spacecraft, and more.

In 1994, he helped initiate a new NASA program to characterize highly sophisticated and risky technologies for future space science missions by flying them on dedicated test flights. The first mission of this New Millennium program, Deep Space 1, was launched in October 1998, and he worked on it from its inception in 1995 to its conclusion in 2001. During the course of the project, Dr. Rayman served as chief mission engineer, mission director, and project manager. The new technologies that were tested on DS1 (including such exotic systems as ion propulsion and artificial intelligence) were designed to reduce the cost and risk and to improve the performance of subsequent interplanetary missions. The primary mission was extremely successful and led to a very productive and exciting extended mission, culminating in a spectacular encounter with Comet Borrelly that yielded the best images that had ever been taken of the nucleus of a comet. The spacecraft remains in orbit around the Sun.

Now he is chief engineer and mission director on a mission that builds on DS1 to study the two largest unexplored worlds in the inner solar system. Launched in September 2007, Dawn is designed to explore two giants of the main asteroid belt, protoplanet Vesta and dwarf planet Ceres, in an ambitious mission that should reveal much about the dawn of the solar system. In July 2011, Dawn became the only spacecraft ever to orbit a resident of the asteroid belt. It will spend more than 13 months at Vesta before leaving for its 2015 appointment with Ceres.

Dr. Rayman is the recipient of numerous honors. Among his awards from NASA are a remarkable three Exceptional Achievement Medals as well as the Outstanding Leadership Medal. In addition, he is the only person to have won both the Exceptional Technical Excellence Award and the Exceptional Leadership Award, two of JPL’s most prestigious honors. Asteroid Rayman was named in recognition of his contributions to space exploration.

Marc is very active in education and public outreach. He is a highly regarded and popular speaker, relating the thrill of science and the excitement of discovery, and he has appeared frequently on television and been quoted often in other news media on subjects as wide-ranging as DS1 and Dawn, a fire onboard the Mir space station, the discovery of the top quark, and the profundity of humankind’s exploration of the cosmos. His DS1 blog had an enormous following and gained critical acclaim as it provided an entertaining and informative view into the flight of DS1, and his Dawn blog continues in the same style. Marc is technical advisor and a popular writer for NASA's educational website The Space Place (where his digital alter ego Dr. Marc resides).

In addition to his numerous technical publications in physics and engineering, he has published many articles on Apollo, Skylab, the space shuttle, piloted and robotic missions of the former USSR, planetary missions, and a variety of topics in astrophysics, cosmology, and space exploration for reference books, encyclopedias, magazines, and newspapers.

One of Marc's favorite hobbies is learning about the space activities of all space-faring nations. Since before the age of 10, he has been building an extensive collection of information (and memorabilia) from over 40 nations. His other hobbies include international folk dancing (he and his wife teach and dance with the Pasadena Folk Dance Co-op), photography, hiking, cross-country skiing, and other outdoor activities. Marc also holds a black belt in karate. His wife, Dr. Janice Rayman, is a brain scientist and a very experienced mountaineer. They live in La Cañada, California with their cats Milky Way and Regulus, iguana Event Horizon, tropical fish, and a large variety of fauna and flora in their pond.

Latest Planetary Radio Appearance

At Spacefest VI With Apollo Astronaut Gene Cernan and a Host of Proud Space Geeks

05/27/2014 | 34:47

Planetary Radio visited Spacefest in Pasadena to talk with planetary scientist and space artist Dan Durda, Marc Rayman of the Dawn asteroid mission, and a guy who calls himself the Space Cowboy. We also eavesdrop on Apollo 17 Commander Gene Cernan and his lifelong fan, Griffith Observatory Curator Laura Danly.

More Planetary Radio shows »

Latest Blog Posts

Dawn Journal: Looking Ahead at Ceres

Posted 2014/12/01 02:51 CST | 0 comment

This month, Marc Rayman looks ahead to some upcoming activities for Dawn as it approaches the dwarf planet Ceres.

Dawn Journal: Ion thrusting (or not)

Posted 2014/11/02 02:30 CST | 8 comments

Marc Rayman gives the latest update on the Dawn mission, focusing this time on the performance of its ion propulsion system.

Dawn Journal: 7 Years of Interplanetary Travel

Posted 2014/09/27 07:43 CDT | 6 comments

Marc Rayman gives us an update on the Dawn mission, heading to Ceres, on the 7th anniversary of its launch.

Older blog posts »

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