Video captures pulsating UFO dropping out of the sky

A Colombian pilot recorded a supposed unidentified flying object (UFO), also called an unidentified aerial phenomenon (UAP), while flying at 12,500 feet. The object is somewhat disc shaped and shiny. Some are saying that the video is solid proof of an undisclosed technology, while others are claiming it's nothing more than a solar balloon which has a similar shape and color. While it appears that the object flies by the aircraft, it may be just an optical illusion of the aircraft's own speed fly