What horrible alternative universe is envisioned in the argument known as Olbers' Paradox? How does the argument rely on the Law of Surface Brightness? Since our universe isn't anything like the horri

What horrible alternative universe is envisioned in the argument known as Olbers' Paradox? How does the argument rely on the Law of Surface Brightness? Since our universe isn't anything like the horrible version envisioned by Olbers, what different feature(s) of our universe account for its being suitable for us to inhabit?

How does the force of gravity exerted by an object depend on one's distance from the object? Be able to use Newton's Law of Gravitation to compare the gravitational force at different distances?