Oh god, this connects SO many dots in my own terrifying Megatheorum. I won't even fit this in one reblog, because this is taking forever to write - but I think it's worth it.
On Tor's website, TLT is listed as Scifi/Fantasy. However, when forced to choose, Tor picks Scifi above all. This is HUGE, because even with all the necromancy and fantasy elements of The Locked Tomb, the publisher looked at the series and said "No, this is scifi." Ergo: the "magical" elements must have a basis in science.
Now, spiritual/religious elements (souls etc) can exist alongside science without much issue. But if you're manipulating physical objects in a real-world environment, you have to explain it in a way that could conceivably track with scientific theory as it functions in the real world. You can extrapolate from there.
So. In GtN, we enter a world of fantasy tropes and Regency-era hand wringing about social morés.... but we also see Palamedes tear his hair out about dating Canaan; how nothing seems to fit a reasonable timeline. In real life, scientists use radiometric dating in geology & archeology to determine the age of objects. (also, do necromantic (or irradiated) interactions with objects impart additional radiation? I don't know!!)
TLDR; You can tear the soul out of a planet, but the actual tearing process needs to make enough sense to pass muster in the Scifi world. Nuclear fusion is a great candidate, as mentioned by @oh-jod-dammit and @championofdnd and is supported by the text ("the soul was like a tiny atom bomb"). God, it's right there.
This, of course, raises some questions.
If necromancy is related to radiation, what power does Alecto/Earth impart to John that allows him control of (assumingly) irradiated corpses? and WHY? What about him was so fucking special? Sure, he was trying to get humans off Earth for its own sake, presumably by testing radiation shielding for long-range space flight. (aka the problem with pregnancy is you have to worry about irradiation for fetuses or reproductive organs. probably.)
But how is John a better ally than an eco-warrior or biologist or any number of scientists that were presumably trying to save the Earth? Alecto (allegedly) said she chose him. How did he bring himself to her attention? If we keep following this logic, how did radiation connect them?
I'm tired. Let's review some facts from both sides.
.Electromagnetic Radiation is produced by stars and other celestial bodies.
.Planets, people, and stars emit different types of radiation.
.Planets and people are proven to have souls, which can be removed from the body by force.
.Do stars have souls?? The sun?? The Moon in the Fucking Sky??? (where is the Moon, btw??)
.Does radiation serve as a connection to a different dimension? Are radio waves a bridge to The River? Did John tear a hole in spacetime and make some kind of wormhole?
"you were the noise that was everywhere" thats RADIO WAVES. tamsyn muir I will GET YOU
This is why Wake is wearing a Haz suit in the River Bubble, btw. She only started experiencing negative effects when the suit was punctured. (right?). It's why The Eggs All Died. It's why flipped planets slowly mutate. RADIATION. I love y'all.
The stupid First House robes? They're a fucking PRISM. Electromagnetic Radiation is visible light!! GODDAMN!!!
And here's where I leave this for a breather. My original document got corrupted somehow. probably the radiation :(