Astronaut Suni Williams to retire from NASA
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Four astronauts are set to depart the International Space Station Wednesday amid a health concern. The unprecedented early departure will leave behind a skeleton crew.
NASA did not identify the crew member or provide details on the medical concern, citing privacy issues in a brief blog post.
An astronaut in need of medical care is on the way back to Earth. The ailing astronaut departed the International Space Station with three crewmates on Wednesday.