From ancient Sumerian texts, there was a description that our creators came from a yet discovered planet that enters our Solar System ever 3,600 years.
The texts said that they were known as the Nephilim, and that they had colonized Earth over 400,000 years ago. The bible also mentions this race, and calls them the “sons of God”.
The planet of Nibiru was suffering as it’s atmosphere was eroding, they came to Earth in order to mine minerals (gold) to help repair their atmosphere.