Author: iamdefinitory

RED GIANTS: A stage in stellar evolution where a star has expanded and cooled after exhausting its core hydrogen, found in the upper right part of the diagram.

WHITE DWARFS: Small, dense stars that have exhausted their nuclear fuel, found in the lower left part of the Hertzsprung-Russell diagram.

SPECTRAL TYPE: A classification of stars based on their spectral characteristics, such as O, B, A, F, G, K, and M.

ABSOLUTE MAGNITUDE: A measure of a star’s luminosity, standardized to a distance of 10 parsecs from Earth.

LUMINOSITY: The total amount of energy emitted by a star per unit of time.

MAIN SEQUENCE: The diagonal band on the Hertzsprung-Russell diagram where most stars, including the Sun, are located.

HERTZSPRUNG-RUSSELL DIAGRAM: A graph that plots stars based on their luminosity and temperature, used to understand stellar evolution.

SUPERNOVA REMNANT: The remnants of a star that has exploded in a supernova, which can also trigger the formation of new stars.

IONIZATION FRONT: The boundary where the radiation from a young star ionizes surrounding gas.