GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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We live in an expanding universe
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The further away a galaxy is, the faster it is receding
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Galaxies far away look redder through a telescope
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All of these
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Detailed explanation-1: -Hubble’s law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth.
Detailed explanation-2: -During the 1920’s and 30’s, Edwin Hubble discovered that the Universe is expanding, with galaxies moving away from each other at a velocity given by an expression known as Hubble’s Law: v = H*r.
Detailed explanation-3: -Answer and Explanation: Hubble’s law states that the further away a galaxy is from planet Earth, the faster it moves away from us, and vice versa.
Detailed explanation-4: -Hubble’s Law says that an object’s velocity away from an observer is directly proportional to its distance from the observer. In other words, the farther away something is the faster it is moving away from us. The spectrum of a galaxy allows you to measure its redshift.