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Astronaut John Glenn marks 50 years since first orbit
Former astronaut and Senator John Glenn celebrated the 50th anniversary of his Earth orbit by chatting with the crew on the International Space Station.
Mr Glenn, 90, was the first American to orbit the Earth, and later became the oldest person to travel in space.
The conversation was part of a larger forum on Nasa's future held at Ohio State University.
Mr Glenn is only one of two surviving Mercury astronauts, who were the first in the country's space programme.
Former astronaut and Senator John Glenn celebrated the 50th anniversary of his Earth orbit by chatting with the crew on the International Space Station.
Mr Glenn, 90, was the first American to orbit the Earth, and later became the oldest person to travel in space.
The conversation was part of a larger forum on Nasa's future held at Ohio State University.
Mr Glenn is only one of two surviving Mercury astronauts, who were the first in the country's space programme.
