Program Archives

OLDEST BANG SINCE THE BIG BANG!
May 18, 2009
Guests: Neil Gehrels
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Neil Gehrels, Principal Investigator for the Swift Mission, returns to tell us about the most distant event ever observed, a Gamma Ray Burst more than 13 billion light years away. Bill Nye reports...  more »

THE BRIGHTEST LIGHT IN THE UNIVERSE
April 28, 2008
Guests: Neil Gehrels
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The Swift spacecraft found the biggest explosion ever witnessed by humans just last month. This Gamma Ray Burst was halfway across the universe. Principal Investigator Neil Gehrels tells us about...  more »

GAMMA RAY BURSTS: EXPLAINING THE UNIVERSE'S BIGGEST BANGS
October 10, 2005
Guests: Neil Gehrels
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Swift satellite principal investigator Neil Gehrels on what causes the universe's biggest explosions. Q&A on the rings of Saturn, and a new space trivia contest during our What's Up segment about the night sky and more.  more »