I've been digging through the sound files extracted, and I've come across some unused material. Some of it is dialogue, some of it is musical cue. For the most part, its all used.
However. I've come across, honestly something really haunting and tragic, almost Alien 3-esque with an astro-vibe, that doesn't seem long enough for the credits, but I don't see where it would be used outside of it. Perhaps, re-establishing comms with the Torrens? Sevastopol burning up in KG348s atmosphere? The overall theme of it seems really connected with the arc Amanda has trying to discover the fate of her mother, I would have loved to have seen it used, somewhere. But I could see them having trouble placing it somewhere. It almost sounds similar to the cues of the climax of Prometheus. Regardless, have a listen (starts at 0:11, some static beforehand)
https://www.dropbox.com/s/g4neafjjg2x8kcu/668806440.mp3?dl=0
