GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The galaxies outside of our own are moving away from us, and the ones that are farthest away are moving the fastest. This means that no matter what galaxy you happen to be in, all the other galaxies are moving away from you.
Detailed explanation-2: -Galaxies rotate around their centers with the sections of the galaxy that are farther out from the galaxy’s center rotating more slowly than the material closer to the center. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang.
Detailed explanation-3: -Using the ratios he observed, Hubble determined that the farther the galaxy, the greater the red shift. In other words, the greater the distance between a galaxy and the earth, the faster that galaxy was moving away from us.
Detailed explanation-4: -Astronomers use something called the “Hubble constant” to measure how fast this expansion is taking place. The measured value of the Hubble constant can be written in many ways, but the way I like to write it is 0.007 percent per million years.