We've looked other places, maybe not as hard as we should or we could, but we've looked and haven't found any; Earth is the only place we know of with life. Is Earth special? This is a question
Hemos visto otros lugares, quizá no tanto como deberíamos o podríamos, pero hemos buscado y sin encontrar nada; La Tierra es el único lugar donde sabemos que hay vida. ¿La Tierra es especial? Me