Astronomy is the study of stars, planets and suns. The universe is bigger than anyone could imagine. It is not measurable. Most stars and planets are not visible by the naked eye, but have to be seen with a telescope. There are billions of stars all across the universe. Scientists have not even discovered 1/1000000000000 of the universe, which is disappointing. Astronomy is the most ancient of all sciences.The ancient Egyptians used astronomy to make their pyramids. Space objects give radiation which astronomers use to detect new stars.
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