Alex Filippenko has produced five astronomy video courses with The Great Courses, co-authored an award-winning astronomy textbook (five editions), and appears in more than 120 television documentaries.

Alex a renowned astrophysicist and professor of astronomy at UC Berkeley. He was the only person to have been a member of the two teams that revealed the accelerating expansion of the universe and the implied existence of dark energy.  The discovery was voted the top science breakthrough of 1998 by Science magazine and resulted in the 2011 Nobel Prize for Physics being awarded to the leaders of the two project teams, as well as the 2007 Gruber Cosmology Prize and the 2015 Breakthrough Prize in Fundamental Physics to all team members.

Other 2021 Authors & Speakers

Walter Isaacson

Nicole Perlroth

Dave Barry

Luis J. Rodriguez

Dr. Euan Ashley

Dr. Steven E. Koonin

Tom Ikeda

Daniel James Brown

Amy Tan

Doris Kearns Goodwin

Doris Kearns Goodwin

Min Jin Lee

Min Jin Lee

Bari Weiss

Ayaan Hirsi Ali

David M. Rubenstein

Billy Collins

Billy Collins

General H.R. McMaster

Don George

Isabel Allende

Wade Davis

Niall Ferguson

Jeffrey Brown

Dr. Ramon Resa

Julia Flynn Siler

James Strock