What is the mathematical expression used to represent the proportionality described by Hubble's Law?
Answer
v = H0 d
Hubble's Law is mathematically codified to express the direct proportionality between a galaxy's recessional velocity ($v$) and its distance ($d$) from the observer. The equation is stated as $v = H_0 d$. In this formulation, $H_0$ serves as the constant of proportionality that links these two measurable quantities. This specific constant is now universally recognized as the Hubble Constant, a critical parameter in modern cosmology used to estimate the age and expansion rate of the universe.
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