Apollo astronauts who ventured to the moon are at five times greater risk of dying from heart disease than shuttle astronauts, U.S. researchers said on Thursday, citing the dangers of cosmic radiation beyond the Earth's magnetic field.
The study by researchers at Florida State University and NASA found that three Apollo astronauts, including Neil Armstrong, the first person to walk on the moon, or 43 percent of those studied, died from cardiovascular disease, a finding with implications for future human travel beyond Earth.
For the study, the researchers examined the death records of 42 astronauts who flew in space, including seven Apollo veterans, and 35 astronauts who died without ever going into space.
The cause of death of the eighth astronaut, Apollo 14's Edgar Mitchell, who died in February 2016, has not been released, so he was excluded from the study, Delp said.
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