The shuttle Atlantis and the Russian space station Mir joined, forming the largest artificial satellite to orbit the earth.
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The Mars Polar Lander was launched.
Ariel 1, the first British-American satellite, was launched from Cape Canaveral in Florida, US.
NASA's Explorer 9 satellite launched from the Wallops Flight Facility in eastern Virginia.
The Fermi Gamma-ray Space Telescope was launched into Earth's orbit atop a Delta II rocket.
NASA's Discovery space shuttle launched on mission STS-56.