KIDS QUIZ
FAMOUS INVENTORS AND INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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invented the telephone.
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studied gravity.
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is best known for discovering radioactivity which is used medically in x-rays.
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showed that there are galaxies beyond our own, the Milky way.
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Detailed explanation-1: -Contrary to the previously held view of a static universe, Hubble ultimately proved that galaxies are, in fact, moving away from us. By studying the light emitted from various galaxies, Hubble discovered that the light appeared displaced toward the red end of the spectrum.
Detailed explanation-2: -Edwin Hubble, the astronomer who discovered there are galaxies beyond the Milky Way. The story of the debate as to whether or not other galaxies existed beyond our own, and how Hubble settled it once and for all.
Detailed explanation-3: -On December 30, 1924, astronomer Edwin P. Hubble (1889-1953) announced his discovery of the spiral nebula Andromeda, proving for the first time that our own Milky Way was but one of many galaxies in the vast universe.