GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The more distant galaxies are moving the slowest
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The more distant galaxies are moving the quickest
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The more distant galaxies are moving towards us
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Galaxies and space is not changing
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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: -Line of evidence number 3: cosmic microwave background radiation. In the 1960s, Arno Penzias and Robert Wilson were experimenting with a 6-meter radio telescope, and discovered a background radio emission that was coming from every direction in the sky – day or night.