1984 in science

The year 1984 in science and technology involved some significant events.

Astronomy and space exploration

 * February 7 – Astronauts Bruce McCandless II and Robert L. Stewart make the first untethered space walk.
 * The National Radio Astronomy Observatory in the United States converts the 36-foot radio telescope on Kitt Peak (originally built in 1967) to the ARO 12m Radio Telescope.

Biology

 * First known case of Bovine spongiform encephalopathy, in England.
 * The enzyme telomerase is discovered by Carol W. Greider and Elizabeth Blackburn in the ciliate Tetrahymena.
 * Danish physiologist Steen Willadsen first successfully uses cells from early embryos to clone a mammal (sheep) by nuclear transfer at the British Agricultural Research Council's Institute of Animal Physiology, Cambridge.

Chemistry and physics

 * Peter Kramer and Dan Shechtman publish their discoveries of what will soon afterwards be named quasicrystals.
 * Hiroshi Kobayashi and colleagues announce synthesis of tetrakis(3,5-bis(trifluoromethyl)phenyl)borate ("BARF").

Computer science

 * January 24 – Apple Computer places the Macintosh personal computer on sale in the United States. It will be the first successful PC to use a graphical user interface.
 * The first edition of language documentation Common Lisp the Language (known as CLtL1) is published in the United States.

History of science

 * Robert Gwyn Macfarlane publishes Alexander Fleming: The Man and the Myth.

Paleontology

 * The fossil skeleton of the hominid "Turkana Boy" is discovered in Kenya.

Physiology and medicine

 * February 3 – Dr. John Buster and the research team at Harbor-UCLA Medical Center announce history's first embryo transfer from one woman to another resulting in a live birth.
 * April 22 – Dr. Robert Gallo and Margaret Heckler of United States Public Health Service announce the discovery of HTLV-III as the virus that causes AIDS.
 * May 10 – Barbara H. Bowman and Oliver Smithies show that variations in haptoglobins are due to genetic polymorphisms.

Technology

 * May 5 – Itaipu Dam in South America begins to generate hydroelectricity.
 * July 21 – In Jackson, Michigan, a factory robot crushes a worker against a safety bar in apparently the first robot-related death in the United States.

Awards

 * Nobel Prizes
 * Physics – Carlo Rubbia, Simon van der Meer
 * Chemistry – Robert Bruce Merrifield
 * Medicine – Niels K. Jerne, Georges J. F. Köhler, César Milstein
 * Turing Award – Niklaus Wirth

Births

 * May 14 – Mark Zuckerberg, American computer programmer and entrepreneur, co-founder of social media platform Facebook
 * December 2 – Maryna Viazovska, Ukrainian-born mathematician

Deaths

 * January 8 – Eerik Kumari (b. 1912), Estonian ornithologist and academic
 * February 21 – Anna Baetjer (b. 1899), American toxicologist.
 * April 8 – Pyotr Kapitsa (b. 1894), Russian physicist, Nobel Prize laureate.
 * April 15 – Grete Hermann (b. 1901), German mathematician and philosopher
 * May 13 – Stanislaw Ulam (b. 1909), Polish American mathematician.
 * May 24 – Sir Stanley Hooker (b. 1907), English aeronautical engineer.
 * August 6 – Abraham Lilienfeld (b. 1920), American epidemiologist.
 * August 11 – George Streisinger (b. 1927), Hungarian American molecular biologist, the first person to clone a vertebrate.
 * October 20 – Paul Dirac (b. 1902), English-born physicist.
 * November 20 – Charles C. Conley (b. 1933), American mathematician working on dynamical systems.
 * December 20 – Stanley Milgram (b. 1933), American social psychologist.