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NASA’s ‘Hubble Hugger’ and Science Chief John Grunsfeld To Retire - Universe Today
Five time space shuttle astronaut and current NASA science chief John Grunsfeld - best known as the ‘Hubble Hugger’ for three critical and dramatic servicing and upgrade missions to the iconic Hubble Space Telescope - his decided to retire from the space agency he faithfully served since being selected as an astronaut in 1992.