The Asymptotic Giant Branch

The Asymptotic Giant Branch (AGB) is a stage in the life of a star that occurs after it has exhausted the hydrogen in its core and expanded. During this phase, the star burns helium and other heavier elements, causing it to grow much larger and cooler, becoming a red giant. This stage is characterized by pulsations and shedding of outer layers, creating beautiful nebulae while ultimately leading to the formation of a white dwarf. AGB stars play a crucial role in enriching the surrounding space with elements necessary for new star and planet formation.