Asteroseismology is the study of stellar oscillations, which are regular variations in a star's brightness or other properties caused by acoustic waves propagating through the star.

Nuclear fusion is the primary mechanism responsible for stellar nucleosynthesis, where lighter elements are combined to form heavier elements, releasing energy in the process.

The majority of hydrogen burning in a star occurs in the core, where the temperature and pressure are high enough for fusion reactions to take place.

The triple-alpha process is the process by which helium is converted into carbon in stars, where three helium nuclei fuse together to form a carbon nucleus.

Hydrogen is primarily responsible for the opacity of a star's radiative zone, as it absorbs and scatters photons, preventing them from traveling freely.

A supernova is the explosion that occurs when the core of a massive star collapses, releasing a tremendous amount of energy and expelling the outer layers of the star.

T Tauri stars are young, pre-main sequence stars that are characterized by rapid rotation and strong magnetic activity.

Evaporation is the process by which a star loses mass through a stellar wind, where particles are expelled from the star's outer layers.

A white dwarf is the final evolutionary stage of a low-mass star, where the star has exhausted its nuclear fuel and collapsed under its own gravity.

A nova is a sudden, dramatic increase in the brightness of a star due to a thermonuclear runaway on its surface.

Red giants are stars that have exhausted their hydrogen fuel in the core and have expanded to a large size, with a low surface temperature.

Star formation is the process by which a star forms from a collapsing cloud of gas and dust.

Blue supergiants are stars that are very hot and luminous, with a large mass and a short lifespan.

Evaporation is the process by which a star gradually loses mass through its stellar wind, where particles are expelled from the star's outer layers.

Neutron stars are stars that have collapsed under their own gravity, resulting in a very high density and a small size.