I really enjoyed your game! The graphics are very nice and I'm suprised you had time for these cutscenes! Plus I really like the ending!
However, the game is WAY too long. It became repetitive really quickly and even boring, so just a small note. The ending WAS worth it, but I almost gave up.
Also, I'd give the player a sprint ability or smth, it's kinda annoying to slowly walk around the planets sometimes. And I would push the camera back a bit, to let the player see more of the space/planet.
But this was REALLY well made, great job!!!