I’ve heard some people speculate that it could be an Aphelion which is an Awoken related beast that can destroy entire worlds. They date back to even before the creation of the Awoken on the ship/space they were born from. And supposedly they’re radioactive beings as a result from nuclear reactor testing, and one has killed at least three known techeuns. Now if an ancient aphelion does become a raid boss. Then I honestly would be very pleased. Because it could potentially open new doors for a numerous amount of additional lore and storylines.