Edward Tsang "Ed" Lu (; born July 1, 1963) is 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. In 2007 Lu retired from NASA to become the Program Manager on Google's Advanced Projects Team. While still at NASA during 2002 Lu co-founded the B612 Foundation, dedicated to protecting the Earth from asteroid strikes, later serving as its Chair. As of 2014 he is currently its Chief Executive Officer.