GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Redshift and cosmic background radiation are evidence supporting the ____
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Big Bang Theory
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Nebula
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Electromagnetic spectrum
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None of the above
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Explanation:
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: -So ‘redshift’ is a measure of how far away the galaxies are. But the redshift also serves as a clock. The light from other galaxies takes longer to reach us the further away they are. So when we look at high-redshift galaxies, we are looking far back in time, seeing the Universe as it was billions of years ago.
There is 1 question to complete.