GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which way is NOT a way to estimate the age of the Universe?
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Look for the oldest stars
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Calculate the expansion rate of Universe
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Count the galaxies
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None of the above
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Explanation:
Detailed explanation-1: -By examining a very tiny portion of the sky, counting up the number of visible galaxies in the universe in that specific region, and then multiplying that number to account for all the regions of the sky, astronomers estimate the number of galaxies in the universe.
Detailed explanation-2: -One way that we can determine the age of a galaxy is to measure the ages of the stars in a galaxy. Since we have a pretty good understanding of how stars evolve, we can take a census of the stars in a galaxy and look at the distribution of star ages in that galaxy.
There is 1 question to complete.