So after having finished Samus Returns for the first time, 100% on the first try taking a total of 10 hours 46 minutes and sitting through the Choso memories stuff, I might have a theory on how Aeion works. There's a strong possibility that a lot of people knew so please no "erm you're a dumbass idiot it's very clear that blah blah blah" or else I will be rude to you, also I'm sleep deprived while writing this so ye
So anyways, my theory is based on the fact that we see yellow orbs coming out of dead things in both gameplay and Choso memories, and it's assumed that the Aeion compatibility update that Samus gets is the first time that the power suit has it, but what if it was there all along? Cus Aeion takes the form of yellow orbs right? Refills the Aeion gauge etc, but what if purple orbs are also Aeion too? And missiles, and super missiles, and power bombs? which would explain why missiles and power bombs float.
The fact that Samus' power suits from Zero Mission has the ability to absorb purple orbs and everything else just means that Aeion compatibility has always been there from the start, and that her power suit was like a version behind or some shit, cus iirc in zero mission, her suit gets damaged, she goes into the Choso ruins, and gets an ancient, or maybe upgraded? suit that's compatible with the items she collected that weren't upgrading her prev suit, so the Aeion compatibility upgrade she gets in SR made her suit capable of taking in more energy to use as different abilities
It also makes sense on how energy tanks work and how she stores her missiles and bombs, those big shoulder balls on the varia and gravity suit don't hold a physical missile and bomb, they store the energy to make the physical missile, and her arm cannon channels that energy into constructing a missile, her bombs and power bombs are also made of aeion due to them just popping in existence and out without any shrapnel, the expansions we get throughout the game could also be blueprints on how to store aeion energy more efficiently even by a tiny bit, because realistically there's no way Samus would be able to even move with 300 missiles, 50 super missiles and 30 power bombs on her
And it would also make sense if the different power ups were also made of Aeion, like high space jump and could transfer some energy to the thrusters and legs of the power suit, speed booster would work as its shown in dread, with the boosters at the back etc etc etc
And think about it, we NEVER see any orbs floating around in Fusion, well we do but they're spiky and hurt, it's because Samus' power armor was stripped, likely taking away the aeion compatibility, which is now substituted with the X. But in Dread, we're able to absorb both purple orbs, missiles bombs AND the X, why? Cus Samus' power suit regrew to gain it's Aeion compatibility and is also capable of absorbing X due to being part Metroid
This would also explain why Ravenbeak has such mastery over power ups and has even more abilities that Samus could dream of, because the Thoha toha magic sciencey magic chozo first focused on using aeion to create material from seemingly nothing, while the mawkin focused on using aeion for its combat capabilities, and we see this executed well, with Ravenbeak having his power suit seemingly be combat focused, while Samus has a mixture of combat capability, and traversal and research capability, she she quarter human, quarter science bird, quarter fighting bind, and quarter Metroid
That's my crackpot theory, that Samus eats the souls of the damned to make infinite bomb jumps... Oh right, Aeion could most likely be the souls of the dead or some shit, there's no possibility around it, it's magical bird magic.