What is the truth behind each arcanum?
As you all know, the "magic system" of the Dragon Prince is based on 6 elements, these are sky, moon, sun, ocean, earth, and star.
At first we are told that no human can learn magic, only extract it from living creatures... But then Callum shows us that humans can use magic of one of these elements, once they understand the Arcanum of that element. An arcanum is like a deep truth, a reality of the world. Callum learns 2 of these truths, and the moon elf tries to explain a third one...
Sky: everything is connected, we all breathe the same air and we all live under the same sky. Everything influences everything else, it's an ecosystem.
Ocean: the ocean arcanum is understanding that there are things that go beyond your control, and accepting it. It's learning to go with the flow instead of fighting the current.
Moon: we don't know what is real and what is not. The outside world is filtered through our senses, therefore we don't have a direct contact with what we call reality, we cannot truly see the real world as it is. There are colours and wavelengths of light we cannot see, frequencies of sounds we can't hear, all we have is what little our senses can perceive, and the illusion of reality that our brain can scramble with it.
What about sun, earth and star? Are their arcanums ever explained in the show, or elsewhere?