Does anybody have any thoughts about what this could possibly be? Source: https://www.youtube.com/watch?v=ZyqtXdLz3Go A kite or party balloons tied on a string is the best guess I've heard so far. But they would have been visible from the front or back and can't appear out of nowhere. It also wouldn't fully explain the almost perfectly straight lines that the smaller objects are seen initially shooting out in. Here is one of the purported original sources which might help a bit if it is slightly better quality. Source: https://www.youtube.com/watch?v=5kegC5gg8TM Some of the comments suggest it was a science experiment, but for what? What could possibly make that occur in the sky other than two fake videos perfectly synced with each other, as seen in the first link? There are apparently multiple El Rosario's in Mexico, and as far as I can tell Alfredo Carillo filmed the second link from an El Rosario inside Mexico City, and another person named Pedro Hernandez recorded it from the opposite direction while in Metepec city on the outskirts of Mexico City.