I think it means that there is a small planetoid (think Pluto sized) in this solar system somewhere directly opposite our sun. It's cold because it's so far away from the sun. We can't see it because it's either too small, doesn't reflect enough light, or because the sun itself is blocking it from our view.
By large enough to skew certain statistical figures, I can only think that they must be speaking of its gravitic effects on the orbits of other planets, or possibly pulling on probes we've sent that way, or bending the light in the telescopes' views that are attempting to look close to that part of the galaxy.
However, there are people who speak of a massive physical spaceship the size of a small planet that is "hiding" on the other side of our sun, and it being the home base of those who manipulate this planet. I suppose that Ra might possibly give a hint towards this when they say "locked" in first density. Since planets have molten cores, the phrase "of a very, very cold nature" could have some significance as well.
By large enough to skew certain statistical figures, I can only think that they must be speaking of its gravitic effects on the orbits of other planets, or possibly pulling on probes we've sent that way, or bending the light in the telescopes' views that are attempting to look close to that part of the galaxy.
However, there are people who speak of a massive physical spaceship the size of a small planet that is "hiding" on the other side of our sun, and it being the home base of those who manipulate this planet. I suppose that Ra might possibly give a hint towards this when they say "locked" in first density. Since planets have molten cores, the phrase "of a very, very cold nature" could have some significance as well.