Thick-Skinned Gravastars Vie to Replace Black Holes, in Theory: "As if black holes weren't mind-bending enough, a new hypothesis suggests an entirely new idea for Nature's densest objects. In fact, the idea goes black holes aren't holes at all but black bubbles with very thick skins.
The new idea, presented this week at a meeting of the American Physical Society, was conceived to provide an alternative to the exotic description of where stuff goes when a star collapses and becomes, in present theory, a black hole."
O.k. this is just getting more specific, IMHO. They are only 'black' because of the light thing, it's a human failing to put it in such terms. But thinking there is a 'surface' of some type, well, that's just curious.