"Unique UFO footage of an object hovering over Mexico City, and filmed from two different angles, has been enhanced and poses more questions than answers. What is it?
The two videos are strung together in a 4-minute sequence with a magnified image in the lower right corner. The OVNI mystified witnesses for days after it was first posted on YouTube on March 13, 2012. Without the enhancements, it's easier to say it's just a balloon, but even without the magnification no one was able to explain how the object hovered in one place for so long.
The enhanced version dispels any notion that the object is a balloon as it changes shape, displays onboard lights and what look like the windows of a ship."