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The husband-and-wife research team of Feryal Ozel and Demetrios Psaltis is using computer simulations to lay the groundwork for taking the first-ever photos of the black hole Sagittarius A*. (Photo: Bob Demers/UANews) The husband-and-wife research team of Feryal Ozel and Demetrios Psaltis is using computer simulations to lay the groundwork for taking the first-ever photos of the black hole Sagittarius A*.