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Sara Susca, deputy payload manager and payload systems engineer for the NASA's SPHEREx mission, looks up at one of the spacecraft's photon shields at the agency's Jet Propulsion Laboratory in Southern California in October 2023. Short for Specto-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer, SPHEREx will create a map of the cosmos like no other, imaging the entire sky and gathering information about millions of galaxies. With this map, scientists will study what happened in the first fraction of a second after the big bang, the history of galaxy evolution,…
