NASA astronaut and Amateur Radio operator John Grunsfeld, KC5ZTF, is among those to be inducted into the Astronaut Hall of Fame this spring. The others are Margaret Rhea Seddon, Steven Lindsey, and Kent Rominger. They will join previous honorees, including Alan Shepard, Neil Armstrong, and John Young in a ceremony on May 30 at Kennedy Space Center. The 2015 inductees are the 14th class. All told, the group has recorded 18 space shuttle missions over 26 years. An astronomer and astrophysicist, Grunsfeld worked on the Hubble Space Telescope on three shuttle missions.

To date, fewer than 90 astronauts have been selected by a panel of their peers to join this elite group. Astronaut Hall of Fame inductees are selected from a pool of nominations, with the finalists chosen by a panel of Hall of Fame astronauts, NASA leaders, flight directors, historians, and journalists. For its inaugural class in 1990, the Hall of Fame inducted the original group of US astronauts — the Mercury Seven.

The Astronaut Hall of Fame features the world's largest collection of personal spaceflight memorabilia. It is operated as part of the Kennedy Space Center Visitor Complex.

Now a NASA associate administrator for science, Grunsfeld is a veteran of five spaceflights. He logged more than 58 days in space and eight spacewalks. His first flight was in 1995 as part of the STS-67 shuttle mission aboard Endeavour. — Thanks to AMSAT News Service via Spaceflight Insider