It was decades before the term "black hole" was coined and people realized that black holes are real astrophysical objects, in fact they're the death state of very massive stars that collapse catastrophically at the end of their lifetime.
Pasaron décadas antes de acuñar el término agujero negro y que la gente se diera cuenta de que los agujeros negros son objetos astrofísicos reales -de hecho, representan la muerte de estrellas muy masivas que colapsan catastróficamente al final de su vida.