New galaxy 'most distant' yet discovered

[Uncle Joe]

55. That is a fascinating article, the key seems to be finding or creating the necessary exotic matter.

Two-dimensional visualization of the Alcubierre drive, showing the opposing regions of expanding and contracting spacetime that displace the central region.

The Alcubierre metric defines the warp-drive spacetime. It is a Lorentzian manifold, which, if interpreted in the context of general relativity, allows a warp bubble to appear in previously-flat spacetime and move away at effectively-superluminal speed. Inhabitants of the bubble feel no inertial effects. This method of transport does not involve objects in motion at speeds faster than light with respect to the contents of the warp bubble; that is, a light beam within the warp bubble would still always move faster than the ship. As objects within the bubble are not moving (locally) faster than light, the mathematical formulation of the Alcubierre metric is consistent with the conventional claims of the laws of relativity (namely, that an object with mass cannot attain or exceed the speed of light) and conventional relativistic effects such as time dilation would not apply as they would with conventional motion at near-light speeds.

The Alcubierre drive, however, remains a hypothetical concept with seemingly difficult problems, though the amount of energy required is no longer thought to be unobtainably large.[5]

http://en.wikipedia.org/wiki/Exotic_matter

In physics, exotic matter is a term which refers to matter which would somehow deviate from the norm and have "exotic" properties. There are several uses of the term.

Hypothetical particles which have "exotic" physical properties that would violate known laws of physics, such as a particle having a negative mass.
Hypothetical particles which have not yet been encountered, such as exotic baryons, but whose properties would be within the realm of mainstream physics if found to exist. Futurist Ray Kurzweil has speculated that by the end of the 21st century it may be possible by using femtotechnology to create new chemical elements composed of exotic baryons that would eventually constitute a new periodic table of elements in which the elements would have completely different properties from the regular chemical elements.[1]
States of matter which are not commonly encountered, such as Bose–Einstein condensates and quark–gluon plasma, but whose properties are perfectly within the realm of mainstream physics.
States of matter which are poorly understood, such as dark matter.

I believe one day science will be able to achieve this goal.

Thanks for the link, derby.