Filippenko joined the Berkeley faculty in 1986. One of the world’s most highly cited astronomers and the only person to have served on both teams that simultaneously discovered the Nobel-worthy accelerating expansion of the universe. He is an elected member of the National Academy of Sciences, has co-authored nearly 800 papers, and has been awarded numerous prizes for his research. Filippenko has won Berkeley’s top teaching awards, has been voted by students the “Best Professor” on campus a record nine times, and was named the 2006 Carnegie/CASE National Professor of the Year among doctoral institutions. He has produced five astronomy video courses with The Teaching Company, co-authored an award-winning textbook, and appears in over 100 TV documentaries, including 50 episodes of The Universe series on H2. In 2004, he received the Carl Sagan Prize for Science Popularization. An avid tennis player, hiker, snorkeler, and skier, he enjoys world travel and is addicted to observing total solar eclipses throughout the globe (15 so far).