GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There are more and more galaxies every day!
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Galaxies are getting farther apart as shown by red shift
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Galaxies are getting larger
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Galaxies are getting closer as shown by blue shift
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Detailed explanation-1: -The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.
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: -Hubble’s brilliant observation was that the red shift of galaxies was directly proportional to the distance of the galaxy from earth. That meant that things farther away from Earth were moving away faster. In other words, the universe must be expanding. He announced his finding in 1929.