Started this last night, love it. Even the music on the title screen was cool.
Just took my time wandering around played hide and seek, repaired a satellite and finally got my launch code and went to space. Had a slight mishap involving a button which led to me being ejected into space
Even the achievements are interesting. Like there is one for using the scanner thing you have and getting all 4 instruments playing the music lined up. You can hear them on their own from the starting location but in space you can line them all up at once.
EDIT: Did a few more loops didn't really twig what was happening until it happened in front of me Spoiler: sun goes super nova
and resets the loop.
Really cool to have these clues presented to you as you worry about remembering them and seeing whats over there before your times runs out.
Theres an area I found on the starting planet that i haven't worked out the significance of yet. I'm sure it will be revealed later.