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Karl Jansky, an American engineer, discovered ______ from outer space.
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Karl Jansky, an American engineer, discovered ______ from outer space.

User Yash Mehrotra
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In 1931 Karl G. Jansky, an American radio engineer, detected radio waves from outer space. Several years later Grote Reber, an American electronics engineer, showed that the source of this cosmic radio radiation was the centre of the Milky Way Galaxy, the galactic system in which Earth…

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