1969 – Apollo program: Apollo 10 returns to Earth after a successful eight-day test of all the components needed for the forthcoming first manned moon landing
. Apollo 10 was the fourth manned mission in the United States Apollo space program. Launched on May 18, 1969, it was the F mission: a "dress rehearsal" for the first Moon landing, testing all of the components and procedures, just short of actually landing. The Lunar Module (LM) came to within 8.4 nautical miles of the lunar surface, the point where the powered descent to the lunar surface would begin. Its success enabled the first landing to be attempted on Apollo 11 in July, 1969. According to the 2002 Guinness World Records, Apollo 10 set the record for the highest speed attained by a manned vehicle at 24,791 mph during the return from the Moon on May 26, 1969.