Rai Weiss is a Professor Emeritus at Massachusetts Institute of Technology (MIT). Dr. Weiss is known for his pioneering measurements of the spectrum of the cosmic microwave background radiation and his seminal leadership in the conception, design and operation of the laser interferometer gravitational wave detector; remarkable scientific achievements recognized by his roles as a co-founder and an intellectual leader of both the COBE (microwave background) Project and LIGO (gravitational-wave detection). He has received numerous scientific and group achievement awards from NASA, an MIT Excellence in Teaching Award, the John Simon Guggenheim Memorial Foundation Fellowship, the Medaille de lADION Observatoire de Nice, the Gruber Cosmology Prize, and the Einstein Prize of the American Physical Society. Dr. Weiss is a fellow of the American Association for the Advancement of Science, the American Physical Society and The American Academy of Arts and Sciences. He received his B.S. and Ph.D. in physics from MIT.