YouTuber "SheilaAliens" made this video a few years back, which shows numerous clips of atmospheric phenomena that are difficult to explain. In 2016, she made a follow-up video which explains some, but not all, of the videos and images. Some people believe the sky, and many of the things in it, is actually holographic imagery termed "The Sky Matrix," or "Moon Matrix." It may connect, in some way, to the Hollow Earth Theory, which may bear some truth, but was part of a WWII co-intel operation involving The Space Race.
© The Weirding, 2017