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Astronomy and Space Science
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Xray astronomy is
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study of x rays emitted by celestial bodies
💡 Explanation:
X-ray astronomy is the study of X-rays emitted by celestial bodies including stars, galaxies, black holes, and neutron stars. These high-energy X-rays are absorbed by Earth's atmosphere, so X-ray telescopes must be placed in space. It is not the study of X-rays of planets themselves or human X-rays in space.