Short answers, pulled from the story.
Collins flew the command module Columbia alone in lunar orbit, completing 30 orbits of the Moon. For 48 minutes of each orbit he was out of radio contact with Earth on the far side of the Moon. He described the experience not as loneliness but as 'awareness, anticipation, satisfaction, confidence, almost exultation.'
Yes. During the Gemini 10 mission in July 1966, Collins became the first person to perform more than one spacewalk in the same mission. He was also the fourth person overall to perform a spacewalk.
Collins was born on the 31st of October 1930, in Rome, Kingdom of Italy, where his father served as the U.S. military attaché. He spent the first 17 years of his life moving between military postings including Rome, Puerto Rico, and several U.S. cities before graduating from St. Albans School in Washington, D.C., in 1948.
Collins became Assistant Secretary of State for Public Affairs in 1969, then directed the National Air and Space Museum from 1971 to 1978, overseeing its construction and opening on the 1st of July 1976. He later became undersecretary of the Smithsonian Institution, and in 1980 became vice president of LTV Aerospace before founding his own consulting firm in 1985.
Michael Collins created the Apollo 11 mission patch. He traced a painting by artist Walter A. Weber from a National Geographic Society book called Water, Prey, and Game Birds of North America and added the lunar surface and Earth behind the eagle. The olive branch was suggested by a computer expert at the simulators, and the call sign Columbia came from Julian Scheer, the NASA Assistant Administrator for Public Affairs.
Collins died of cancer on the 28th of April 2021, in Naples, Florida, at the age of 90. His ashes were interred at Arlington National Cemetery on the 30th of January 2023.