The rank of the galaxies based on the speed with which each should be moving away from earth due to the expansion of the universe, from fastest to slowest are:
Galaxies are separating from one another in static space. As space enlarges, galaxies are relocating away from one another.
We may learn a lot about the nature of the cosmos from Hubble's law, which states essentially that a galaxy's velocity (or, as it is commonly displayed, its redshift) is precisely proportionate to its distance. The relationship between distance and velocity should not exist if the cosmos is constant and unchanging. According to Hubble's law, a galaxy gets larger the farthest it is from Earth.
Therefore, Hubble-Lemaître law, commonly referred to as Hubble's law, is the finding in physical cosmology that galaxies are eloping from Earth at rates proportionate to their separation. In other words, they are traveling away from Earth more quickly the more away they are.
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The following figures give the approximate distances of five galaxies from Earth. Rank the galaxies based on the speed with which each should be moving away from Earth due to the expansion of the universe, from fastest to slowest.
- 800 million ly
- 2 billion ly
- 70 million ly
- 230 million ly
- 5 billion ly