Imagine if one side of the Earth always faced the sun. Half of the planet would be stuck in perpetual daylight, the other shrouded in permanent night.
But for aliens in other solar systems, our doomsday scenario may be their everyday — and life might get along just fine. In a new study, astronomers propose that extraterrestrial life could exist in so-called terminator zones, the border between light and dark halves of an exoplanet.
