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Galileo Galilei with the telescope discovered craters on the moon and managed to discover the moons that jupiter had.
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He broke sunlight into the colors of the rainbow, revealing its spectrum, and developed the first reflecting telescope.
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It was William Herschel who, with the help of his telescope, discovered the planet Uranus, with the discovery of this the solar system was suddenly enlarged.
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Herschel was the first person to draw a map of our galaxy and deduced that what was seen in the sky was the side face of a disk-based galaxy.
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David Gill took an amazing photograph of a large comet and the stars.
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The hooker telescope was located on mount wilson in California, thanks to it, the astronomer Edwin Hubble made a great discovery about the galaxies that were separating from each other.
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This is the study of the stars through the analysis of invisible waves.
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This was the first 5m telescope, thanks to this the spectra could be measured This was the first 5m telescope, thanks to this the spectra could be measured and radial varieties of large numbers of galaxies.
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It is the latest in optical astronomy, it captures images using new technologies such as active optics and adaptive optics that compensates for the movements and effects of our atmosphere.