"TARDIS-sized"?
Is that outside or inside?!
Fermilab’s Dark Energy Camera has captured its first images, as a test run for the Dark Energy Survey due to begin in December 2012. The TARDIS-sized, 62-CCD, 570 megapixel camera, mounted on the Victor M. Blanco telescope at the National Science Foundation’s Cerro Tololo Inter-American Observatory (CTIO) in Chile, can shoot …
As the universe expands, energy density gets less, when it drops below a certain threshold the higher dimensions collapse resulting in dark matter until the energy density is sufficient to shore up the rip, this is the reason why the universe appears to be expanding faster (and where all the mass is). This is another reason why you only find dark matter away from "normal" mass, if normal mass was there the energy density keeps the higher dimentions in place.