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प्रश्न
Why can an X-ray telescope not be based on the earth?
थोडक्यात उत्तर
उत्तर
- The purpose of an X-ray telescope is to study distant heavenly bodies that emit X-rays.
- Most of the X-rays from the heavens are reflected back into space by the Earth's atmosphere.
- Hence, X-ray telescopes are placed in an orbit outside the earth’s atmosphere and not on the earth.
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