Many celestial objects have certain limitations on their physical properties, governed by the laws of nature. For example, if a planet gains enough mass (around 10 times as massive as Jupiter), they become massive enough to fuse deuterium or lithium, effectively categorizing them as a star. A similar case happens for stars, which are, for most of their lives, in a stable equilibrium between the inward gravitational force of the gas and the outward radiation pressure from the energy generated by the nuclear reactions in the core. The luminosity (and by extension the radiation pressure) is highly proportional to its mass, which means that if you continue to add mass…
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