

Life in Our Universe
The Kepler Spacecraft's Planets
S1 • E16 May 6, 2012 31m
The Kepler mission is changing everything we know about extrasolar planets. Learn how this supersensitive-imaging instrument works to monitor 157,000 stars continuously for years and what it has uncovered since launching in 2009. But first, review the transit effect created when a parent star crosses its orbiting planet.