GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How fast light can travel
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The expansion of the Universe
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Creation of new planets
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None of the above
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Detailed explanation-1: -What evidence is there to support the Big Bang theory? Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble’s discovery in the 1920s of a relationship between a galaxy’s distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Detailed explanation-2: -Evidence that the universe is expanding can be found using the Doppler effect, because distant galaxies have a red shift. This means that the galaxies are moving away from each other, which means that the universe is expanding.
Detailed explanation-3: -Some pieces of evidence used to prove the big bang theory are moving galaxies, cosmic background, and the age of the universe.