Color me impressed, this is an actual interesting concept that I have never, and probably would never have conceived of. Now, don’t think too hard about actual science as you read, look at the images, and watch the trailer, unless I’m mistaken it need not apply here.
And now, observe a screen shot from the trailer.

No, that image has not been flipped upside down, Kirsten Dunst’s world has. In Upside Down, Kirsten Dunst and Jim Sturgess star in this sci-fi romance as a pair from two adjacent planets with opposite gravitational pulls who fall in love. But their laws forbid interaction…
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