The last total solar eclipse of the 20th century occurred and was visible from Europe and Asia.
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The first spacewalk was made by the Soviet cosmonaut Georgy Grechko during Salyut 6 EO-1 mission.
NASA's Mariner 6 space probe successfully launched from Cape Canaveral, Florida.
Three astronauts, Richard J. Hieb, Thomas D. Akers, and Pierre J. Thuot, simultaneously walked in space for the first time.
Alvan Graham Clark discovered the white dwarf star Sirius B.
NASA's Spitzer Space Telescope discovered a star with seven Earth-sized planets orbiting it.
