posted on Jan, 25 2012 @ 06:55 AM
as an interesting add on to previous article, here is a reference for kardashev scale:
In 1964, Kardashev defined three levels of civilizations, based on the order of magnitude of the amount of power available to them:
Type I: "technological level close to the level presently  attained on earth, with energy consumption at ≈4×1019 erg/sec. Guillermo A.
Lemarchand stated this as "a level "near" contemporary terrestrial civilization with an energy capability equivalent to the solar insolation on Earth,
between 10 to the 16 power and 10 to the 17 power Watts."
Type II: "a civilization capable of harnessing the energy radiated by its own star (for example, the stage of successful construction of a "Dyson
sphere"); energy consumption at ≈4×1033 erg/sec. Lemarchand stated this as "a civilization capable of utilizing and channeling the entire
radiation output of its star. The energy utilization would then be comparable to the luminosity of our Sun, about 4 x 10 to the 26 power Watts."
Type III: "a civilization in possession of energy on the scale of its own galaxy, with energy consumption at≈4×1044 erg/sec." Lemarchand stated
this as "a civilization with access to the power comparable to the luminosity of the entire Milky Way galaxy, about 4 x 10 to the 37 power
It is most obvious type 3 civilizations COULD very well and plausible be cloaking via black holes, or it some type of energy device.
If you accept the kardashev scale, it should be a obvious possibility.
edit on 25-1-2012 by BBalazs because: (no reason given)