doing their own thing, invisible to us, but otherwise attracting our matter into their, nucleating us among them. so, but of course, a particle physicist would think that the solution is a particle. if you're a hammer, all your problems look like nails. one of the more intriguing accounts i've heard is if you have multiple universes, it turns out gravity can spill out of one universe and be felt by another. and if we have another universe adjacent to ours, it could be that these sites where we see extra gravity is ordinary gravity in a parallel universe. and here we are, looking at it mysteriously like, "what is this?" it's like the blind man touching the elephant. "i don't know what this whole thing is, but here i can describe this part of it. and it's kind of textured, and it's, no, no, no, no, no, this got, it's smooth and hard." and, you know, you can't see the whole elephant. maybe the elephant is ordinary gravity in another universe and we're feeling it and we're making stuff up just to account for it. >> you think there could be another universe? >> i don't see why not. because back when