The world of science fiction is a strange place inhabited by strange beings and even stranger images. From astronauts to aliens, galaxies to gremlins, saucers to spaceships, the imaginations of science fiction can indeed take us to faraway worlds.
NASA has been exploring outer space for decades, and the film and TV adventures of "Star Wars" and "Battlestar Galactica" have opened a window to the future. Is it science? Is it fiction? Sometimes it's hard to tell the difference.