11.   It is, for a big-city girl, an altogether alien world.

12.   Later, Sagan revised the calculation and raised the estimate to a million alien worlds.

13.   Most of the animals were gelatinous, their bodies perfectly adapted to an alien world having no surfaces, no waves, and no sunlight.

14.   Spirit is taken away from his home, his mom, his family and suddenly taken into this alien world.

15.   The Western anthropologist is a peculiar guest in an alien world, observing a performance while affecting the world he observes.

16.   These filmmakers have looked closely at an alien world and not blinked.

17.   They all offer not just help, but the comfort of a familiar culture in an alien world.

18.   Whether writing about alien worlds or earthly alienation, Ray Bradbury enchants audiences with near-poetic wordplay even as he scares them out of their wits.