Shaak Ti was the only thing keeping it from being consumed by darkness. Felucia is a world finely balanced between the light and dark sides of the Force. The darkness was about to over take the balance of the world and consume it, but Shaak Ti's presence there not only brought back the balance, but deafened it and created a nexus of Light Side power: The Force Unleashed novel
Shaak Ti's power in the Force as so great, she influenced Felucia. Note: This is best viewed in blog format.
