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Robert Goddard invented the liquid-fuel rocket, also called rocket engines.
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The Soviet Union launched Sputnik 1, the first artificial object to orbit the earth. Less than a month later, a dog named Laika was launched aboard the Sputnik 2.
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The United States responded to the Soviet Union with its first satellite, a craft named Explorer 1.
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Yuri Garagin was the first person to travel in space when he made a single orbit around the earth in his Vostok 1 Spacecraft.
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Alan Shepard became America´s first person in space with a fifteen-minute suborbital hop in the Mercury spacecraft.
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Valentina Tereshvoka became the first woman to fly in space.
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Apollo 11 was the first mission to actually land a manned spacecraft.
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Neil Armstrong became the first human being to set foot on another world.
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The USSR launched the space station Mir.
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Over fifteen nations were working together to build this Space Station.