WASHINGTON (Reuters) – Former astronaut Walter Cunningham, who flew to space aboard Apollo 7 in 1968, part of the first crewed Apollo mission paving the way for 12 others to land on the moon in subsequent years, died on Tuesday at age 90, NASA said. Cunningham joined crewmates Walter Schirra and Donn Eisele for the successful 11-day mission, which was conducted in low-Earth orbit as the first human test flight of the new Apollo spacecraft that would later venture to the moon. Apollo 7 marked the resumption of NASA’s lunar spaceflight program 21 months after the fire that killed all three membe…