We're never going to see the stuff outside, but by going to the South Pole and spending three years looking at the detailed structure of the night sky, we can figure out that we're probably in a universe that looks kind of like that.
Nunca veremos la cosa de fuera, pero yendo al Polo Sur y pasando 3 años viendo la estructura detallada del cielo nocturno, podemos suponer que probablemente estamos en un universo parecido a esto.