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The first telescope observation of the night sky leads to discoveries including lunar craters and the phases of Venus.
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The V-2 military program launch a rocket that crosses the Kármán Line into Outer Space.
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Laika was the first animal to be sent into space.
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The first pictures of another planet are taken. The planet is Mars.
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This was the first of many crewless dockings such as the rover on Mars that is controlled by NASA.
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During the first orbit around Venus, NASA managed to take photos from the planet's surface.
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