What if another Earth -- Earth II -- suddenly showed up in the sky above our Earth, and the door of possibility was opened for there to be a world which hosted its own civilizations just like ours?
Or go further back: if there was another Earth, would you go visit it?
"Another Earth" explores just those ideas, as the "science fiction romance" links an aspiring astrophysicist (Brit Marling) to a music composer (William Mapother) through tragedy. The tragedy was spurred on by another Earth suddenly appearing in the sky, closer than the moon.
In one clip, Marling and Mapother sift through some get-to-know you questions: philosophies on cleaning, going to college or not, and winning an essay contest that would send you to outer space. In the other, Marling takes herself to a place where she can the new Earth clearly in the sky, as the voiceover inquires if we even know who we are as a species or race, and "stand outside ourselves and look at us."
Heavy. The Mike Cahill-directed "Another Earth" debuts in Park City on Jan. 24.