What was the first Apollo mission to leave Earth orbit and orbit the moon, in 1968?
Apollo 8 "From the Earth to the Moon" episode "1968". The S-IVB stage of Apollo 8 was also portrayed as the location of an alien device in the 1970 "UFO" episode "Conflict". Apollo 8's Lunar Orbit Insertion One was chronicled with actual recordings in the song "The Other Side", on the album "The Race for Space", by the band Public Service Broadcasting. Apollo 8 Apollo 8, the second manned spaceflight mission in the United States Apollo space program, was launched on December 21, 1968, and became the first manned spacecraft to leave low Earth orbit, reach the Moon, orbit it, and safely
Halo orbit each Lagrange point. Because halo orbits tend to be unstable, stationkeeping is required to keep a satellite on the orbit. Most satellites in halo orbit serve scientific purposes, for example as space telescopes. Robert W. Farquhar first used the name "halo" for these orbits in his 1968 Ph.D. thesis. Farquhar advocated using spacecraft in a halo orbit on the far side of the Moon (Earth–Moon ) as a communications relay station for an Apollo mission to the far side of the Moon. A spacecraft in such a halo orbit would be in continuous view of both the Earth and the