It's both. Neither Energy nor Matter can be truly destroyed, only converted between one another. With some weird edge cases because physics get wonky the deeper you look at it.
E=MC² Sorry, I typed it out wrong. I was half asleep, then got so excited when I got a notification from Nero. The matter-antimatter asymmetry problem is why literally all the matter, including dark matter, exists.
Our entire universe and everything in it, exists due to a random fluke with the Big Bang, some matter didn't have an anti-matter partner to annihilate with. So it was forced to live alone forever, and eventually found more lonely matter to hang out with. Then, BAM¡¡ human sentience, furries, furry visual novels, lol!!
I'm wondering if it's a Dyson swarm/sphere, around a star 🌟. That houses a sort of Ai, an Ai that perhaps either on purpose or accident, lost a part of whatever it is, that part being the Mæron? Or they sent them it as a way to save them, to create another planet, to maybe use to pull the planet back into orbit? Or they did it on purpose to eliminate the Carain? Maybe it's the ultimate iteration of Simulation Theory, and The Eye is a god of sorts. A god that's watching, playing if you will, and the Carain are the pieces they play with. The Mæron is their version of flipping the board over, letting the pieces go flying.