Lanx
<Prior Amod>
I'm watching Upside Down now and it doesn't seem to be it. Look , they have the full thing on the tubes. . There's a specific scene with the other planet in the sky and you can at least make out a quarter of the entire planet (it's really close, but not as close as Upside Down.)
Also can we just take a moment to say how stupid Upside Down is. What, they built all their buildings on both sides in the exact same way? Riiiight. Cracked out art student made this film.
You're getting confused between upside down and melancholia b/c they both have Kirsten Dunst in it.