Forbidden Planet

The Forbidden Planet is an artificial planet created by an unknown alien race. This race, that is now extinct, was extremely smart, and was believed to have been the most advanced race of aliens in the Galaxy.

Creation
It is not known exactly when the Forbidden Planet was created, but through rough translation and extreme estimation, it is believed the Forbidden Planet was built in 1,000,000 BC and took thousands of years to build. Its purpose was to be a creation that would offer unlimited knowledge on all things, though this species was killed off before much could be recorded. The planet was designed completely after Earth, though it is unknown why this is.

Discovery by Humanity
Millions of years later, Humanity discovered the Forbidden Planet through deep space exploration, upon its discovery, all forms of proof and evidence supporting its existence was hidden away from the public, in case something was discovered or something went wrong that would scare or harm Humanity. After a month of investigation, the Forbidden Planet was released for the public to see and talk about. Humanity was in awe by the vast amount of knowledge and technology held on this planet.

Invasion of the Bellum'Dei
After toying around with the library Humanity came across on the Forbidden Planet, a distress signal was sent across the galaxy, alerting the most threatening race of aliens in the Galaxy, the Bellum'Dei. The Bellum charged straight towards the Forbidden Planet, attempting to find out which race they were going to destroy, and what planets they must go to in order to do this. Realizing their mistake, the Humans set a trap for the Bellum, they activated a gravity field, pulling down the Bellum ships, attempting to destroy them before they could get to Earth. With most of their numbers destroyed and trapped, the remaining Bellum fled back to their planet to regroup and rebuild, though survivors of the trap united to kill the humans and deactivate the field. The Forbidden War began.

Trivia
The original name for the Forbidden Planet was going to be Forsaken Planet, though a typo caused the name to change to Forbidden Planet, and it stayed that way.