In this talk, Narciso “Txitxo” Benítez (Instituto Astrofisico de Andalucía, Spain) explains how photometric redshifts of galaxies and other extragalactic objects have revolutionized cosmology, and will continue to do so.

The slides used for this talk can be found at uspconference.if.usp.br/multimedia/narciso_benitez_saopaulo2013/

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