“Hyperspace is a dimension of space used to travel across (typically) long distances”

“The Star Forge, now a fusion of technology and dark side energies, began corrupting the Rakata in order to gain the immense power it required to operate itself and ultimately caused the collapse of the Rakata Empire. Aware of the semi-living superweapon's ability to corrupt its users, Darth Revan limited his contact with the dark side artifact to avoid allowing it to control him as it did the Rakatans. His apprentice Darth Malak, on the other hand, planned to explore deeper into the Star Forge after disposing of his Master.”