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.