But after he ran for senate he decided to go back into space for his second chance but many people had told not to go but he went on his own will and didn't take no for an answer. So now John Glenn is now known as the second man to orbit space and also the oldest man in space. And the only reason he's the oldest man in space is because he had decided to go back when was 77 years old but that was good to nasa because they made a new discovery which is when you send an aging person into space there may be a chance of premature growth. And premature growth means your getting younger but don't go to nasa and try it because it doesn't work most of the time John Glenn only found it because of the position of the rocket was at.