For those conspiracy theorists and urban legend enthusiasts perplexed by the question, "Why has the United States never returned to the moon?" Apollo 18 now offers a frighteningly realistic lost-footage answer. [insert dramatic, suspenseful movie music here]."According to "official" space history, moon missions ended with Apollo 17; and, although an eighteenth mission was scheduled, NASA maintains it scrubbed the launch. Apollo 18 alleges the mission actually went off as planned, and the crew of the ill-fated moon-landing encountered alien life among the craters. Supposedly, investigators recently stumbled upon never-before-released NASA video proving the existence of alien life. Shot by the moonwalkers, the "secret" video documents their encounter with the aliens, and you safely may assume the two parties did not exchange recipes for fish tacos. The very well-crafted trailer for Apollo 18 ostensibly shows you the "lost" footage."Produced by Timur Bekmambetov and directed by Gonzalo Lopez-Gallego, Apollo 18 is frequently reminiscent of Ridley Scott's original Alien, but in a good, allusive way, building suspense and genuine terror from intense realism. The voice-over for the trailer says ominously, "What you are about to see is the actual footage which the astronauts captured on that mission. While NASA denies its authenticity, others say it's the real reason we've never gone back to the moon."When you have seen the footage, you too may become a conspiracy theorist or fan of urban legends."