Sci-fi planets like Dune's Arrakis and Star Wars' Tatooine might look cool, but according to NASA they're more fiction than ...

Sky watchers are in for a treat this month as the stars align to give amateurs a shot to see six planets at once.

For centuries, planets beyond our solar system—called exoplanets—existed only in theory and science fiction ... which all involve both ground- and space-based observatories.