May 22 – Apollo program: Apollo 10's lunar module flies within 15,400 m of the Moon's surface.
May 26 – Apollo program: Apollo 10 returns to Earth after a successful eight-day test of all the components needed for the upcoming first human Moon landing.
July 20 – Apollo program: 20:17 UTC – The human race, represented by Neil Armstrong and Buzz Aldrin, lands on the Moon in the Apollo 11Lunar Module Eagle. At 02:56 UTC on July 21 (22:56 ET July 20), Armstrong takes the first human step on the Moon's surface. Apollo 11 lifted off for the Moon on July 16 and returns safely on July 24.
July 21 – Luna programme: 2 hours before the Apollo 11 lunar module lifts off from the Moon's surface, the Soviet uncrewed craft Luna 15, launched on July 13 and intended to return samples from the Moon, crashes in Mare Crisium.
May 15 – A teenager known as 'Robert R.' dies in St. Louis, Missouri, of a baffling medical condition. In 1984 it will be identified as the earliest confirmed case of HIV/AIDS in North America. The first strain of the AIDS virus (HIV) has probably migrated to the United States via Haiti.[11]
Late January – Eugene, Oregon, has a record snowfall of 3 feet in 3 days: a pineapple express moves into the region with a shot of cold air, followed by some snow showers.
^Yamanaka, A.; Saiki, S.; Tamura, S.; Saito, K. (1969). "Problems in chronic obstructive bronchial diseases, with special reference to diffuse panbronchiolitis". Naika (in Japanese). 23 (3): 442–451. PMID5783341.
^Wolfensberger, Wolf (1969-01-10). "The Origin and Nature of Our Institutional Models". Changing Patterns in Residential Services for the Mentally Retarded. Washington, D.C.: President's Committee on Mental Retardation. Archived from the original on 2006-05-12.
^Fastovsky, D.E.; Weishampel, D.B. (2005). "Theropoda I: Nature Red in Tooth and Claw". In Fastovsky, D.E.; Weishampel, D.B. (eds.). The Evolution and Extinction of the Dinosaurs (2nd ed.). Cambridge University Press. pp. 265–299. ISBN 978-0-521-81172-9.
^Schwarz, John H. (2000). "String Theory: The Early Years". arXiv:hep-th/0007118.