I saw most of this less than a month ago, and I think I am just too old for artsy Swedish movies, if you know what I mean. If I remember it was a Danish/Swedish production, and while I initially liked the weird feel and atmosphere, I just got too bored to go on. I fast forwarded through a lot of it, but I got the part about the rogue planet ruining everything. My first thought of course was GLP and Niburu or Wormwood, but I know it was all a symbol in the movie for an existential limit point.
Still it was good to see a movie maker have the guts to incorporate something like this into an attempted thoughtful film. I like how physics was ignored, for the existential effect.
Wish I could say more. I just erased it from my computer yesterday, so I can't take another look easily.
How can something be neat and boring at the same time?
Edited to add: If you want to see a really fine Danish movie, try "Inheritance." Be sure you get the Danish one and not the Argentine "Inheritance." (Although it is good, too, but in an entirely diff way.)