• February 2, 2012

    Episode 376: Supernova Milestone

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    Two large programs -- the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) and the Cluster Lensing and Supernova Survey with Hubble (CLASH) -- are being used to find distant supernovae, or exploding stars. Supernovae are used to map the expansion and acceleration of the universe and probe the nature of dark energy. A new, far-away supernova has been found, pushing the mapping even further back in time.