can you mention some of the crew members who travelled?
Frank Borman, James Lovell, and William Anders
Apollo 8
Its three-astronaut crew — Frank Borman, James Lovell, and William Anders — were the first humans to fly to the Moon, to witness and photograph an Earthrise, and to escape the gravity of a celestial body. 

what is apollo 8? The first crewed spacecraft to leave low Earth orbit and the first to reach the Moon, orbit it, and return what is the mission insignia of it? The triangular shape of the insignia refers to the shape of the Apollo CM, it shows a red figure8 looping around the Earth and Moon to reflect both the mission number and the circumlunar nature of the mission.
wiki:1630580
Apollo 8 [SEP] Introduction
Originally planned as the second crewed Apollo Lunar Module and command module test, to be flown in an elliptical medium Earth orbit in early 1969, the mission profile was changed in August 1968 to a more ambitious command-module-only lunar orbital flight to be flown in December, as the lunar module was not yet ready to make its first flight. Astronaut Jim McDivitt's crew, who were training to fly the first lunar module flight in low Earth orbit, became the crew for the Apollo9 mission, and Borman's crew were moved to the Apollo8 mission. This left Borman's crew with two to three months' less training and preparation time than originally planned, and replaced the planned lunar module training with translunar navigation training.