Luna 9 touches down on the Moon.
The unmanned Soviet spacecraft was the first to achieve a soft landing there.
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NASA's Dawn probe became the first spacecraft to orbit a dwarf planet.
NASA's Discovery space shuttle launched on mission STS-56.
The Soviet Union's Luna 2 space probe became the first spacecraft to reach the moon's surface.
NASA's spacecraft, The Pioneer 10, became the first craft to exit the solar system.
Apollo 9 and its crew returned to Earth after a 10-day mission orbiting Earth.
