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        Part of NASA
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        NASA | Viewing X-Rays

        In this interactive activity adapted from NASA, learn about how X-rays are one type of electromagnetic radiation that astronomers use to study the universe. Investigate how the wavelength, frequency, and energy of an electromagnetic wave are related. Explore X-ray images of astronomical objects, and learn about how X-ray detectors work. In addition, learn why the Chandra telescope uses barrel mirrors to collect X-rays.

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