Stars with masses comparable to the Sun end their lives as white dwarfs, where electron degeneracy pressure supports the star against gravitational collapse.

Supernovae occur when massive stars, typically blue supergiants, exhaust their nuclear fuel and undergo a violent explosion, ejecting vast amounts of material into space.

When a massive star undergoes a supernova, the core collapses under its own gravity, forming a neutron star, where neutrons are tightly packed together.

The event horizon is the boundary in spacetime beyond which the gravitational pull becomes so strong that nothing, not even light, can escape.

Type Ia supernovae occur when a white dwarf accretes mass from a companion star, exceeding its critical mass and triggering a thermonuclear explosion.

Neutron capture, a process where neutrons are absorbed by atomic nuclei, is the main mechanism for the formation of elements heavier than iron in stars.

Type II supernovae, resulting from the collapse of massive stars, are associated with the formation of neutron stars.

The Chandrasekhar limit is the maximum mass a white dwarf can have before it collapses under its own gravity and becomes a neutron star.

During the main sequence phase, stars primarily generate energy through the fusion of hydrogen into helium in their cores.

Type II supernovae occur when massive stars, typically blue supergiants, exhaust their nuclear fuel and undergo a violent explosion.

When a low-mass star undergoes a supernova, the core collapses and forms a white dwarf, where electron degeneracy pressure supports the star against gravitational collapse.

Planetary nebulae are formed when a star sheds its outer layers, revealing its hot core, which ionizes the surrounding gas.

Type Ib supernovae occur when massive stars, typically blue supergiants, lose their hydrogen-rich outer layers before exploding.

Black holes are formed when massive stars collapse under their own gravity, creating a singularity at their center.

Type Ic supernovae, resulting from the collapse of massive stars that have lost their outer layers, are associated with the formation of black holes.