>>184757576Aether was hit by a Leviathan just like Tallon IV, except that due to sci-fi mumbo jumbo it impacted the Dark World version of it instead of the Light World. You'll notice that when the planets are portrayed only the Dark World has the large cracks on it.
Just like on Tallon IV, the Leviathan began pushing Phazon into the planet- but only the Dark World.
The Ing had a natural capacity to possess creatures, and even technology. There was a serious risk of them possessing a pilot and taking Space Pirate or Luminoth ships off-world. I'm pretty sure there's a Luminoth entry about how all Luminoth were trained to suicide rather than be possessed, and all of the Luminoth ships were intentionally destroyed when they were about to be pushed back from their spacedocks during the war.