Former astronaut and senator John Glenn passed away at the age of 95 after being hospitalized with an unexplained condition. Glenn, who suffered a stroke two years ago after having heart valve replacement surgery died while surrounded by family members at the James Cancer Hospital at Ohio State. A spokesman for the hospital told NBC News that they did not know Glenn's "condition or illness or prognosis." Glenn was a Democratic senator for 25 years and most known for his 1962 ride in a space capsule dubbed Friendship 7 that circled the Earth.