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The first telescope was built by Galileo. He made an refracting telescope. It had convex lenses.
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John William Draper was the first man to have a telescope that took a clear image of the moon
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Robert H. Goddard launches first liquid fueled rockets in Aburn, Massachusetts
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Hermann Oberth launches first personal rocket with students in Kennedy space center in Florida
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First research flight launched by the U.S. captured by the V-2 space rocket
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First rocket launched into earth's orbit by the USSR. The mission was called Sputnik 1
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First woman in space who was Valentina Tereshkova.
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NASA launches the first two-person space flight. The crew was Gus Grissom and John Young
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First space station in space by USSR
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First soft landing on Mars and first signals from the surface
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First photograph of the whole solar system by U.S. NASA
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First landing on an asteroid by U.S. NASA
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First orbit around an asteroid. Eugene Shoemaker and NASA was involved
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First sample of an asteroid brought back to earth by Japan. JAXA was involved
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When MRO landed on Mars. Scott Hubbard and Jennifer Trosper was involved.