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Tuesday, September 12 2017

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Type Ia supernovae (SNe Ia) are superb distance indicators and are used to map the expansion history of the Universe. Two decades ago, astronomers used observations of SNe Ia to find that the Universe's expansion is currently accelerating. Since this initial discovery, we have used SNe Ia to constrain the nature of "dark energy," which drives this accelerated expansion. To improve our dark energy constraints beyond our current basic understanding, we must design new and better SN surveys as well as improve our understanding of the physics of the SN explosion itself.