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Md. native, astronauts return to American section of International Space Station
Md. native, astronauts return to American section of International Space Station

Astronauts including Columbia native Terry Virts returned to the U.S.-operated section of the International Space Station on Wednesday afternoon, hours after evacuating over fears of an ammonia leak. Virts, fellow NASA astronaut Barry Wilmore and European Space Agency astronaut Samantha Cristoforetti donned protective masks and re-entered the American side of the space station about 3 p.m. and found no indications of any ammonia inside the cabin. Space station engineers had been on alert since about 4 a.m., when sensors suggested that ammonia from a cooling system on the outside of the space station was leaking into a water loop that flows inside the satellite, Michael Suffredini,...

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