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This lead to the discovery of Jupiter's moons, lunar craters, and Venus's phases.
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The first photo of the Moon helped us to see the craters, and possible evolution of the universe.
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Tombaugh was the discoverer of Pluto. It revealed another planet... Pluto, of course!
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When the fruit flies were launched into space, it paved the way for a human to go into space.
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Sputnik l was the first satellite in orbit, and helped scientists see more stars, and planets than before.
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Yuri Gagarin was the first person in space, sent by Russians. This urged the United States to do the same... only better.
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Valentina Nikolayeva Tereshkova was the first woman in space.
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The spacecraft Mariner 4 gave us the first pictures of Mars.
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The first two people to land on the moon were Neil Armstrong, and Buzz Aldrin. This mission accomplished the president's challenge.
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The Soviet craft Luna 16 was launched into space, gathering soil from the moon. Because of this, we now know what the moon is made of.
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Voyager 2 got to Saturn, and transmitted images to us. These showed us what Saturn is made of.
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Voyager 2 transmitted images of Uranus, allowing us to see what it is made of, and possible weather on the planet.
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Hubble helped unveil the universe. It revealed galaxies, and black holes.
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The Magellan spacecraft mapped the surface of Venus, using radar equipment. We now know the size of Venus.
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Dennis Tito paid the Russian Space program $20,000,000 to go into space. This opens up new opportunities in space tourism.