I just thought of something! Anyone know Disney's "Atlantis: The Lost Empire"? Well, I just remembered that the "power source" for Atlantis is a crystal that acts as the life force for the Atlanteans, granting them longevity, healing, and providing clean fuel for their technology (which is beyond advanced). And right now we have Steven Universe, a show about sentient gems... TIME FOR AN ATLANTIS GEMSONA!!!
Edit- OMG And I just found out that the "Heart of Atlantis" originated from a comet! It came from space, just like the Gems of Steven Universe