Astronauts tight-lipped about reason for hospital visit after 235 days in space

Nasa still piecing things together' two weeks after return from ISS but crew members cite medical privacy

Three Nasa astronauts who were taken to a Florida hospital after returning to Earth from the International Space Station two weeks ago told reporters on Friday that they were all in good health following the medical ordeal - and that the agency was still piecing things together" about what happened.

Michael Barrett, pilot of the crew that splashed down in the Gulf of Mexico on 25 October after seven months in orbit, gave few further details at a press conference in Houston, citing medical privacy laws that he said prevented him from discussing the episode in detail.