Astronaut's 'serious medical condition' forces Nasa to end space station mission early

Nasa has said it will return a four-person crew aboard the International Space Station (ISS), cutting short their mission a month early because of a "serious medical condition" affecting one of the astronauts.The agency did not disclose the name of the crew member or the medical condition, citing health privacy, but said the person was in a stable condition. "This is not an emergency evacuation," said a Nasa…