Astronaut Suni Williams is putting health rumors to rest after photos of her during her mission aboard the International Space Station sparked concern.

NASA and Russian officials disagree on the cause of a worsening leak on the ISS, raising safety concerns for astronauts.

Read more Astronauts, state representatives and engineers gathered in celebration on a wide-open field at Johnson Space Center on Friday. Former astronaut Nancy Currie-Gregg strode amid tall grass ...