Everybody knows that the Omega Speedmaster Professional is the “moonwatch,” having occupied the valuable wrist real estate of the Apollo 11 astronauts as they made their way to the Moon for the first time in human history. But few know how that vaunted Swiss chronograph landed there and why the experts at NASA chose the Speedy instead of, say, the Rolex Daytona or a similarly capable Longines chronograph. Daniel Hug of the Zürich newspaper Neue Zürcher Zeitung‘s Bellevue magazine has found some official NASA documents though that cast some light of exactly how the now-famous Omega was cleared for flight.