I don't know.
That's really the feeling I get from this. I think that's probably the best I can get. At first, I was having a hard time connecting the song with the game. I thought that it was really only just the similar name and, you know, "space." But it's also the discomfort, that neither song nor game has an ending that we know for certain, left in that vague void of "it is what it is" whether that be an oncoming war or conversations never had.
I don't know, and I love it.