Author: iamdefinitory

SUPERGIANT: An extremely large and luminous star, much bigger than a red giant, located in the upper right of the Hertzsprung-Russell diagram.

RED GIANT: A large, cool star in the later stages of its evolution, after it has exhausted hydrogen in its core.

HELIUM ACCUMULATION: In a star’s core, as hydrogen is converted to helium, the amount of helium increases, leading to changes in the star’s structure.

SOLAR MASS STARS: Stars with a mass similar to the Sun’s, which will eventually evolve into red giants after their main sequence phase.

ZERO-AGE MAIN SEQUENCE: The stage in a star’s evolution when it first begins fusing hydrogen in its core.

STAR’S LIFESPAN: Main sequence stars with greater mass burn through their fuel faster, leading to a shorter lifespan.

CORE HYDROGEN DEPLETION: The process where a star uses up the hydrogen in its core, signaling the end of its main sequence phase.

MAIN SEQUENCE STAR STABILITY: A star remains stable during the main sequence phase due to the balance between gravity and radiation pressure.

CONVECTIVE ZONE: The outer layer of a star where energy is transported by convection, involving rising and falling gases.