The title extraterrestres is the Spanish word for extraterrestrials, which explains why this clip is most often used for alien, UFO and space-themed edits rather than a single film or show. Short, atmospheric sounds like this travel well online because they can be dropped into almost any video without dialogue getting in the way, from spooky October edits to playful conspiracy jokes. Its length also helps creators, since 15 seconds is long enough to build tension but short enough to fit a reveal, a reaction or a punchline without dragging the scene.