See, I'd let you sleep on my couch too, but that's where my fatass diabetic dog sleeps. And if I try to move him, he gets pissy and opens up his blisters all over the place. But if you wanna spoon my bloody dog, then by all means.
Madness string 34527
Theorists also consider the possibility that dark matter also includes gravity leaking into our universe from neighbouring universes. If our universe is on a membrane floating within a higher dimensional space, dark matter may be explained by ordinary stars and galaxies on nearby membrane sheets.