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The year 1973 in science and technology included many events, some of which are listed below.

1 Astronomy and space exploration

• March 7 - Comet Kohoutek is discovered
• April 6 - Launch of Pioneer 11 spacecraft
• May 14 - Skylab, the United States' first space station, is launched.
• June 30June 30 is the 181st day of the year (182nd in leap years) in the Gregorian Calendar, with 184 days remaining. Events 1651 Battle of Beresteczko ends with Polish victory 1864 Abraham Lincoln grants Yosemite Valley to California for "public use, resort and - Very long total solar eclipseFor Solar Eclipse the alien friend of the rubber doll Betty Spaghetty, see Betty Spaghetty Zambia 2001 eclipse A solar eclipse occurs when the Sun, Moon and Earth are on a single line with the Moon in the middle. Seen from the Earth, the Moon is in front visible in NE South America, the Atlantic, and central Africa. During the entire Second Millennium, only seven total solar eclipses exceeded seven minutes of totality. This was the last. Observers aboard a ConcordeThe Aerospatiale- BAC Concorde supersonic transport (SST) was one of only two supersonic passenger airliners to have seen commercial service. Concorde had a cruising speed of Mach 2. 04 and a cruise altitude of 56,000 feet ( 17,000 metres) with a delta wi jet were able to stretch totality to about 74 minutes by flying along the path of the moon's umbraA different sense of the word "umbra", used in mathematics, is explained in the article titled umbral calculus. The umbra ( Latin for shadow) is the darkest part of a shadow. From within the umbra, the source of light is completely blocked by the object c.
• July 25July 25 is the 206th day (207th in leap years) of the year in the Gregorian Calendar, with 159 days remaining. Events 306 Constantine I proclaimed Roman emperor by his troops. 1261 Constantinople is captured by Nicaean forces under the command of Michael - SovietThe Union of Soviet Socialist Republics (USSR ( Russian: ; tr. Soyuz Sovetskikh Sotsialisticheskikh Respublik (SSSR) also called the Soviet Union ( ; tr. Sovetsky Soyuz , was a state in much of the northern region of Eurasia that existed from 1922 until 1 Mars 5 space probe launched.
• November 3November 3 is the 307th day of the year (308th in leap years) in the Gregorian Calendar, with 58 days remaining. Events 1755 The colony of Massachusetts offers a bounty of 20 British pounds for the scalps of native american boys and girls under the age of - Mariner program: NASA launches the Mariner 10 toward Mercury (on March 29, 1974 it became the first space probe to reach that planet).
• December 3 - Pioneer program: Pioneer 10 sends back the first close-up images of Jupiter.