Not, it's not a white hole. White holes create what is best explained as negative gravity, so there would be no walking, or pools if it was one. It could explain the strange 'wind' Tucker felt in the gravity well, but that's it. Plus, energy can neither be created or destroyed, so the energy a white hole ejects, would have to be constantly coming from somewhere. I think it's a being or God of sorts, and it somehow merged the victims of the accident somehow and combined them with a human somehow, creating Tucker. Would explain how he understands them but can't speak it, as he doesn't possess the hardware to do so. Also his hallucinations of the cleaning robot, and this mascot, both of which only he can see, hear, and smell, and can also physically hurt him. I'm curious about the 'Heron' video clip in his mind, his dreams of watching planets form right in front of his eyes, his prophetic statements and thoughts, and his strange attraction to Rhoun or whoever you chose as your love interest. Tyr did say they lost neurals during that accident as well. We also have wonder how Rhys and Soknoss know more about hom than anyone we've met on the station so far, and why he was so determined to meet Tucker. I also wonder if those on the ship don't age, remembering what the captain said about how long she's known Tyr, and she said it was 'lifetimes.'