NASA astronaut Kate Rubins is seen during a tour of the Center of Epigenetics at Johns Hopkins School of Medicine, Monday, April 24, 2017 in Baltimore, Md. Rubins conducted two spacewalks and became the first person to sequence DNA in space during her 115 day mission as part of Expedition 48 and 49.

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Keywords: baltimore, hopkins, joel, johns, kate, kowsky, maryland, md, nasa, rubins, university