Short answers, pulled from the story.
Alfred Worden performed the first deep-space EVA on the return flight from the Moon during Apollo 15 in 1971. He spent 38 minutes outside the command module Endeavour, venturing out three times to retrieve film cassettes from cameras on the spacecraft's exterior. He remains the record-holder for the spacewalk performed farthest from Earth.
At his greatest distance, Worden was 2,235 miles from any other human beings while orbiting the Moon alone in the command module Endeavour. The Guinness Book of World Records lists him as the "most isolated human being" during this period. He spent three days alone in lunar orbit while crewmates David Scott and James Irwin were on the surface.
Before Apollo 15, Worden and his crewmates David Scott and James Irwin agreed to carry 398 postal covers to the Moon in exchange for payments of approximately $7,000 each from a West German stamp dealer named Hermann Sieger. This arrangement was not approved by NASA as required. The astronauts were formally reprimanded on the 10th of July, 1972, and were removed from flight status, ending their careers as active astronauts.
Worden orbited the Moon 74 times in the command module Endeavour during the Apollo 15 mission in 1971. He conducted a full scientific program during this time, operating instruments including a gamma-ray spectrometer, an X-ray spectrometer, a panoramic camera, and a mass spectrometer.
Alfred Merrill Worden was born on the 7th of February, 1932, in Jackson, Michigan. He died on the 18th of March, 2020, at an assisted living center in Sugar Land, Texas, at the age of 88.
Worden operated a suite of instruments housed in the service module's SIM bay, including a gamma-ray spectrometer, an X-ray spectrometer, a laser altimeter, a panoramic camera derived from the classified Corona spy satellite program, a stellar and metric mapping camera, an alpha particle spectrometer for detecting lunar volcanism, and a mass spectrometer. He supplemented instrument data with verbal descriptions and photography.