officer of the B612 Foundation, and as well, a U.S. physicist and a former NASA astronaut. He is a veteran of two Space Shuttle missions and an extended stay aboard the International Space Station which included a six-hour spacewalk outside the station performing construction work. During his three missions he logged a total of 206 days in space. His education includes an electrical engineering degree from Cornell University, and a Ph.D. in applied physics from Stanford University. Lu became a specialist in solar physics and astrophysics as a visiting scientist at the High Altitude Observatory based in Boulder, Colorado, from 1989 until 1992. In his final year, he held a joint appointment with the Joint Institute for Laboratory Astrophysics at the University of Colorado. Lu performed postdoctoral fellow work at the Institute for Astronomy in Honolulu, Hawaii from 1992 until 1995 before being selected for NASA's Astronaut Corps in 1994. Lu developed a number of new theoretical advances, which have provided for the first time a basic understanding of the underlying physics of solar flares. Besides his work on solar flares he has published journal articles and scientific papers on a wide range of topics including cosmology, solar oscillations, statistical mechanics, plasma physics, near-Earth asteroids, and is also a co-inventor of the gravitational tractor concept of asteroid deflection. In 2007 Lu retired from NASA to become the Program Manager on Google's Advanced Projects Team, and also worked with Liquid Robotics as its Chief of Innovative Applications, and at Hover Inc. as its Chief Technology Officer. While still at NASA during 2002 Lu co-founded the B612 Foundation, later serving as its Chair and in 2014 is currently its chief executive officer. Lu holds a commercial pilot license with multi-engine instrument ratings, accumulating some 1,500 hours of flight time. Among his honors are NASA's highest awards, its Distinguished Service and Exceptional Service medals, as well as the Russian Gagarin, Komorov and Beregovoy Medals. Tom Gavin, Chairman, Sentinel Standing Review Team Thomas R. Gavin is the chairman of the B612 Foundation's Sentinel Standing Review Team (SSRT), and a former executive-level manager at NASA. He served with NASA for 30 years, including his position as Associate Director for Flight Programs and Mission Assurance at their Jet Propulsion Laboratory (JPL) organization, and "has been at the forefront in leading many of the most successful U.S. space missions, including Galileo's mission to Jupiter, Cassini–Huygens mission to