I'd say that I'm no conspiracy theorist, but I'll be honest, I spotted this 1697 sketch while looking through a UFO conspiracy site. And as far as I'm concerned, it's clearly an ink rendition of two Xbox 360 logos floating in the sky.
This supposedly historical shot was pulled from the 1997 documentary Area 51: Alien Interview. According to the film, on November 4, 1697, the citizens of Hamburg, Germany spotted "two glowing wheels" in the air. To some, it was just further proof of another civilization visiting Earth.
But to modern historians (that would be me, browsing UFO sites when I was bored one Sunday afternoon), these glowing wheels are proof not of future alien technology but of current Microsoft technology. Clearly the company has some sort of time travel machine that resembles a giant Xbox 360 logo. Wait, scratch that. According to this sketch, they have two such machines. And they're probably running some sort of advanced NXE with really fantastic avatars and Netflix streaming in 4K.