Outer Space. With the current human civilization existing on Earth, not a lot has been unearthed about it. All we know is that the Earth is in a small Star System in the Milky Way Galaxy. But all of those facts and information came from Scientists and Astrologers of the current civilization.
The number of people who managed to leave the atmosphere of the Earth probably hadn't reached thousands yet and the ones who managed to land and walk on the moon could be counted on fingers.
In short. The current technology on Earth is too primitive.
With the revelation that the Earth is a possible World higher than a Transcendent World, the humans walking on Earth today are the new civilization that sprang up perhaps around 3000 years ago or more.
It's just a guess for now but what happened to the Dark World was most likely connected to what happened on Earth.
