There are two main types of supernovae:
* Type Ia supernovae: These occur when a white dwarf star, the dense remnant of a sun-like star, accretes matter from a companion star. When the white dwarf reaches a critical mass, it undergoes a runaway nuclear fusion reaction, completely destroying itself in a powerful explosion.
* Type II supernovae: These occur when a massive star, typically 8-15 times the mass of our sun, runs out of fuel in its core. The core collapses, triggering a shock wave that explodes the star's outer layers.
Supernovae are incredibly bright events, often outshining their entire host galaxy for a period of time. They play a crucial role in the evolution of galaxies, spreading heavy elements formed in the explosion throughout the interstellar medium.
Let me know if you'd like to know more about supernovae!
