By Jason Hanna, CNN
(CNN) -- Former astronaut John Young, a NASA trailblazer whose six journeys into space included a walk on the moon and commanding the first space shuttle flight, died Friday after complications from pneumonia, NASA said Saturday.
He was 87.
We're saddened by the loss of astronaut John Young, who was 87. Young flew twice to the Moon, walked on its surface & flew the first Space Shuttle mission. He went to space six times in the Gemini, Apollo & Space Shuttle programs. pic.twitter.com/l4nSwUCMIq— NASA (@NASA) January 6, 2018
"NASA and the world have lost a pioneer. Astronaut John Young's storied career spanned three generations of spaceflight; we will stand on his shoulders as we look toward the next human frontier," NASA Administrator Robert Lightfoot said.
He ended up as one of NASA's most experienced flyers, becoming the first astronaut to fly into space six times, and the only one to enter space in the each of the Gemini, Apollo and space shuttle programs.
He was part of the first manned Gemini mission -- with Gus Grissom on Gemini 3 in 1965. And he commanded the first space shuttle flight, with pilot Bob Crippen, over three days in April 1981.
Young flew to the moon twice and landed on it once. He was part of the Apollo 10 crew that orbited the moon in May 1969 in preparation for the first landing later that year. In the second trip, Young walked on the moon as part of Apollo 16 in 1972.
"John Young was at the forefront of human space exploration with his poise, talent, and tenacity," Lightfoot said. "He was in every way the 'astronaut's astronaut.' We will miss him."
Former President George H.W. Bush said Young was "more than a good friend; he was a fearless patriot whose courage and commitment to duty helped our Nation push back the horizon of discovery at a critical time."
"Barbara and I join our fellow Americans and many friends in the space community in mourning the loss of astronaut John Young," Bush said in a statement. "... To us, he represented the best in the American spirit -- always looking forward, always reaching higher.
"John leaves a tremendous legacy of accomplishment, in addition to his wonderful family. May his memory serve to inspire future generations of explorers to dare greatly, act boldly, and serve selflessly."
™ & © 2018 Cable News Network, Inc., a Time Warner Company. All rights reserved.NASA released a statement announcing his death via Twitter.