#physics lovers

black holes will only form from stars that are massive enough - as in mass, not size.

small stars expand into red giants at the end of their life, and then they puff out their edges and they become a white dwarf (which are also pretty dense).

large stars, however, expand into red SUPERgiants, and terminate their life via a cataclysmic, bright supernova. the remnants of the supernova can form nebulae, and super dense celestial objects known as neutron stars. but they can also form something else, something much more ominous; a black hole.