Long-duration missions in space take a toll on the body, astronauts lose bone density and suffer muscle loss. Blood circulation is also affected, and fluid shifts can also impact eyesight.
When 42-year-old Jacob Trigg lost his job as a project manager in the tech industry he didn't think it would take too long to find a new one - he always had before.
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Your Google Chat history can now be searched by Gemini - how it works
"I didn't know what was happening," she explained. "The first month I do not remember anything."