Thanks for the feedback! and no worries, the current build does only have the one ending. I was originally planning for 3 with one being complete failure (originally the game would have been timed but it felt too rushed so I cut it), the ending it has now, and then a third that would have related to some optional events on the ship that I didn't have time to add.
Funnily enough, I actually was going to add a mission report screen after the ending explaining what exactly became of the ship and its crew but I wound up cutting it for the sudden cut to black instead. I think in hindsight, the mission report screen would have probably been the better choice to help explain what just happened.