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Allowed to search the skys and find the moons of different planets and the craters on the moons.
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Lord rosse constructed it in ireland . Used it to discover first spiral nebulae.
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recorded some of the most detailed visible light images ever, allowing a deep view into space and time.
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Scientific successer to the hubble space telescope. With unprecented resolution and sensitivity from long-wavelength visible to the mid-infrared.