What relationship does Hubble Law define regarding the velocity and distance of galaxies?
Answer
The velocity at which a galaxy moves away is proportional to its distance from us.
Hubble Law serves as a crucial tool for astronomers to estimate the distance of galaxies. It establishes that the speed at which a galaxy appears to be receding from an observer is directly linked to how far away that galaxy is located. This proportional relationship allows scientists to use redshift measurements to calculate distances and even infer the age of the universe by acting like a giant clock that measures the history of cosmic expansion.
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