(Music) [How many universes are there?] Sometimes when I'm on a long plane flight, I gaze out at all those mountains and deserts and try to get my head around how vast our Earth is.
(Música) [Quants universos hi ha?] De vegades durant un llarg vol mire totes eixes muntanyes i deserts i tracte de fer-me la idea de com de gran és la nostra Terra.