The Hubble Space Telescope captured the first images of the surface of Pluto.
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Carolyn & Eugene Shoemaker and David Levy discovered the Shoemaker-Levy 9 comet.
Three Russian cosmonauts returned from space after spending a record time of 237 days in orbit.
The New York Times published Edwin Hubble's discovery that the Andromeda 'nebula' is actually a galaxy.
Israel launched its first satellite, Ofek-1, from the Palmachim Air Base.
Russia's Mir Space Station was deorbited over the South Pacific Ocean.