A question about a book...

[Romulator]

Some lore things though: I don't see why the ARK would crash into the Sun or the Moon, since it was set on a straight travel direction far out from the solar system from what I understand. I don't believe it was set to orbit the Sun at all. Of course, your characters may not know that, but they somehow know of the ARK project itself, even though Pathos-II believed they were the last living humans, so how did they get that information/misinformation?

That is. The story is based on the story, but isn't set in the same universe. So the humanity's still there. I only used ARK as a reference, so there isn't any Phatos-II or Simon Jarrett or any Catherine.

Ah, I've changed the name of the machinery, so I think I'm no more in trouble since I've changed the story of it(?)

If you can avoid making direct references to names, but you reference the ideas that are in SOMA, then I believe you're in the clear.

Friendly writing tip though, assume your reader(s) have not played SOMA. This will allow you to focus on events in your backstory so that you can make your book's plot more believable and understandable.