If mission specialist Michael Massimino is worried about performing death-defying repairs on the world’s most famous (and expensive) telescope, he does a convincing job of hiding it. Snug in the electric-orange space suit that he will wear aboard the space shuttle Atlantis, he riffs genially about his Brooklyn upbringing, the search for a great slice of New York pizza, and the absurdities of NASA lingo. He discusses some technical issues about the suit with his crewmates. He reflects on the history around him in this corner of Houston’s Johnson Space Center, where Apollo communications equipment was tested four decades ago. In short, he exudes effortless competence and exactly zero fear.