I nodded off at least once while watching this movie, so I'll likely have to watch it again in its entirety. In the meantime, I'll offer my initial takeaway below which might be missing some details that a second, more attentive viewing might (eventually) fix.

There was plenty of potential to dig more deeply into the stress and trauma of being on a space station when the Earth - with everyone we've ever loved, and everything we've ever known - is destroyed, particularly when it seems it was done by humans. So, like, HOW?

But, there wasn't enough - not enough emotional connection to the characters, not enough emotional connection to Earth, not enough philosophical exploration of the isolation, the emptiness, the point in struggling to survive, what happens to the universe afterwards...

Of all the characters (again, as far as I caught while still awake), only one is shown to have to any sense of past, any sense of connection to someone on Earth. That was odd.

It was also a little unrealistic to have a team on a "ten year shift". We saw how everything went sideways during the Biosphere Project in nary a few weeks while right here on Earth. Neither human beings nor systems are that strong. Things break down. Expecting a small team to handle a ten-year stretch was absurd, a recipe for disaster within.

I also don't recall why they couldn't just go to the colony for which they served as a midpoint waystation. What happened to those people? In fact, why was there no communication with them?

All in all, it was interesting - not terrible, but could/should have been much better.