Linked from
The 13 pages that link to Chandrasekhar limit, each with the reason it gives.
White dwarfRelated: Above this limit, electron pressure cannot support the star against collapse.
SupernovaRelated: Approaching this limit can lead to runaway thermonuclear burning.
Fermi gasRelated: It shows where Fermi pressure can no longer balance stellar gravity.
Solar massRelated: Its value shows how the unit marks a decisive limit in stellar evolution.
Black dwarfRelated: The limit separates white-dwarf remnants from cores that collapse instead.