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The year 1991 in science and technology involved many significant events, some listed below.

Contents 1 Astronomy and space exploration 2 Chemistry 3 Computer science 4 Awards 5 Births 6 Deaths 7 Organisations

[edit] Astronomy and space exploration

• October 29 - the Galileo probe becomes the first spacecraft to visit an asteroid (951 Gaspra)
• Asteroid 6859 Datemasamune is discovered by Masahiro Koishikawa.
• 11514 Tsunenaga is discovered.

[edit] Chemistry

• Carbon nanotubes discovered by Sumio Iijima

[edit] Computer science

• February 26 - Tim Berners-Lee introduces the web browser.
• September 17 - Linus Torvalds introduces the Linux kernel version 0.01.

[edit] Awards

• Nobel Prizes
  • Physics - Pierre-Gilles de Gennes
  • Chemistry - Richard R. Ernst
  • Medicine - Erwin Neher, Bert Sakmann
• Turing Award - Robin Milner

[edit] Births

[edit] Deaths

• January 30 - John Bardeen (b. 1908), physicist, co-inventor of the transistor. Only physicist to receive the Nobel Prize in Physics twice.
• March 1 - Edwin H. Land (b. 1909), inventor and founder of Polaroid.

[edit] Organisations

• CERN: Finland and Poland join CERN.