Space probe Osiris-Rex by NASA was launched to collect rock samples from the Bennu asteroid.
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NASA's Discovery Space Shuttle carried the Hubble Space Telescope into orbit.
Carolyn & Eugene Shoemaker and David Levy discovered the Shoemaker-Levy 9 comet.
A chimpanzee named Ham became the first primate to go to space aboard the US MR-2 spacecraft.
Scientists discovered the most distant supermassive black hole.
Space welcomed its first tourist from Earth.