GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The universe started at a central point.
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Planetesimals formed in debris disks.
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Visible matter only makes up about 5% of the universe.
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The Milky Way is the only galaxy in the universe.
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Detailed explanation-1: -He discovered that the speed at which astronomical objects move apart is proportional to their distance from each other. In other words, the farther away objects are from Earth, the faster they are moving away from us.
Detailed explanation-2: -The origin of the Big Bang theory can be credited to Edwin Hubble. Hubble made the observation that the universe is continuously expanding. He discovered that a galaxys velocity is proportional to its distance. Galaxies that are twice as far from us move twice as fast.
Detailed explanation-3: -Edwin Powell Hubble is renowned for determining that there are other galaxies in the Universe beyond the Milky Way, and for observing that the universe is expanding at a constant rate.
Detailed explanation-4: -Hubble’s observation showed that the red shift of galaxies was directly proportional to the distance of the galaxy from earth. This means that things that are farther away from Earth were moving away more rapidly. In other words, it can be said that the universe must be expanding. He declared his conclusion in 1929.