So, in The Journey to the Center of the TARDIS, we learn that the Eye of Harmony is a Star in a state of decay before it explodes and becomes a black hole, held in perpetual decay.
But, how big was the Star? I couldn't grasp from the episode if the Star is a regular sized Star like ours, or if it was shrunken?
I'm trying to grasp the size of the room it was in. If it was a regular sized star, that'd be one massive room, about the distance from the Sun to Mercury or Venus.
So it is a big star, or a little tiny one?