Buzz Aldrin, the second man on the Moon, has been evacuated from the South Pole after falling ill.
The 86-year-old former astronaut was visiting Antarctica in a tourist group and was evacuated to New Zealand.
He has fluid in his lungs but is responding well to treatment, a statement on his website said. He is being kept overnight for observation.
Mr Aldrin’s manager Christina Korp, who accompanied him, said he was in good spirits.