Daniel Thomas Barry (born December 30, 1953)[1] is an American engineer, scientist, television personality, and a retired NASA astronaut.

[2] He was at Singularity University from 2009 to 2012, where he was co-chair of the Faculty of Artificial Intelligence and Robotics and the chair of the graduate summer program.

Barry graduated in 1975 with a Bachelor of Science degree in electrical engineering from Cornell University in Ithaca, New York.

He graduated in 1980 with a Ph.D. in electrical engineering and computer science from Princeton University after completing a doctoral dissertation titled Correlated X-ray diffraction analysis and electron microscopy of photoreceptor membranes In 1982, he graduated with a Doctor of Medicine degree from the Miller School of Medicine at the University of Miami in Miami.

He was appointed as an assistant professor in the Department of Physical Medicine and Rehabilitation and in the Bioengineering Program at the University of Michigan in 1985, and his tenure was approved by the Regents in 1992.

He completed one year of training and qualified for assignment as a mission specialist on Space Shuttle flight crews.

Barry performed a 6-hour, 9 minute spacewalk designed to demonstrate and evaluate techniques to be used in the assembly of the International Space Station.

He started in the older male tribe and immediately bonded with Terry Deitz due to their common flying backgrounds.

When the Casaya tribe won the combined Reward/Immunity Challenge in that episode and sent Sally Schumann to Exile Island (making her immune from the Tribal Council vote), Barry's fate was sealed.