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The year 1989 in science and technology involved many significant events, some listed below.

Astronomy[edit]

  • August – Asteroid 4769 Castalia is the first asteroid directly imaged, by radar from Arecibo.
  • August 25 – The Voyager 2 spacecraft makes its closest approach to Neptune, providing definitive proof of the planet's rings.
  • September 5 – Pluto–Charon barycentre comes to perihelion.[1]
  • Asteroid 5128 Wakabayashi is discovered by Masahiro Koishikawa.
  • 4292 Aoba is discovered.
  • 4871 Riverside is discovered.
  • 6089 Izumi is discovered.
  • 6190 Rennes is discovered
  • 8084 Dallas is discovered.

Biology[edit]

  • Discovery of the cystic fibrosis trans-membrane conductance regulator gene.[2]
  • The New Zealand Department of Conservation begins to implement a Kakapo Recovery Plan.[3]

Computer science[edit]

  • March 12 - Tim Berners-Lee submits a memorandum, titled "Information Management: A Proposal", to the management at CERN for a system that would eventually become the World Wide Web.
  • June 8 – GNU Bash is released.[4]
  • July 26 – A federal grand jury indicts Cornell University student Robert Tappan Morris, Jr. for releasing a computer virus, making him the first person to be prosecuted under the 1986 Computer Fraud and Abuse Act in the United States.

Environment[edit]

  • The global concentration of carbon dioxide in Earth's atmosphere reaches 350 ppm (parts per million) by volume.

Physics[edit]

  • January – Supplee's paradox is published.[5]
  • March 23 – Stanley Pons and Martin Fleischmann announce cold fusion at the University of Utah.

Physiology and medicine[edit]

  • The Oxford Database of Perinatal Trials begins publishing online.[6]
  • The hepatitis C virus (HCV) is first identified by Michael Houghton and his team.

Technology[edit]

  • July 17 – The Northrop Grumman B-2 Spirit "Stealth Bomber" aircraft, developed for the United States Air Force, first flies.[7]
  • Isamu Akasaki produces the first Gallium nitride p-n junction blue/UV light-emitting diode.

Awards[edit]

  • Nobel Prizes
    • Physics – Norman F. Ramsey, Hans G. Dehmelt, Wolfgang Paul
    • Chemistry – Sidney Altman, Thomas R. Cech
    • Medicine – J. Michael Bishop, Harold E. Varmus
  • Turing Award – William (Velvel) Kahan

Births[edit]

  • May 9 – Katie Bouman, American computer imaging sci entire

Deaths[edit]

  • February 27 – Konrad Lorenz (born 1903), Austrian zoologist.
  • March 18 – Sir Harold Jeffreys (born 1891), English mathematician.
  • April 24 – Horace Hodes (born 1907), American medical researcher.
  • August 10 – Isabella Forshall (born 1900), English pediatric surgeon.
  • August 12 – William Shockley (born 1910), American physicist.
  • August 20 – George Adamson (born 1906), British wildlife conservationist.
  • August 29 – Sir Peter Scott (born 1909), English wildlife conservationist.
  • October 11 – M. King Hubbert (born 1903), American geophysicist.
  • October 28 – Louise Hay (born 1935), French-born American mathematician; breast cancer.
  • December 14 – Andrei Sakharov (born 1921), Soviet Russian nuclear physicist and political dissident.

References[edit]

  1. ^ "Horizon Online Ephemeris System for Pluto Barycenter". JPL Horizons On-Line Ephemeris System @ Solar System Dynamics Group. Retrieved January 16, 2011. CS1 maint: discouraged parameter (link)
  2. ^ "Identification of the cystic fibrosis gene: chromosome walking and jumping". Science. 8 September 1989. Retrieved 30 October 2013. CS1 maint: discouraged parameter (link)
  3. ^ Powlesland, R. G. (1989). Kakapo Recovery Plan 1989–1994. Wellington: Department of Conservation.
  4. ^ Brian Fox (forwarded by Leonard H. Tower Jr.) (June 8, 1989). "Bash is in beta release!". Newsgroup: gnu.announce. Retrieved October 28, 2010. CS1 maint: discouraged parameter (link)
  5. ^ Supplee, James M. (1989). "Relativistic buoyancy". American Journal of Physics. 57 (1): 75–77. Bibcode:1989AmJPh..57...75S. doi:10.1119/1.15875. ISSN 0002-9505.
  6. ^ "About the Cochrane Library". The Cochrane Library. Archived from the original on 2011-01-05. Retrieved January 25, 2011. CS1 maint: discouraged parameter (link)
  7. ^ Lambert, Mark (1990). Jane's All The World's Aircraft 1990–1991. Coulsdon, UK: Jane's Defence Data. ISBN 978-0-7106-0908-3.