Changes

A number of solutions to this problem have been proposed, including several versions of an "inflationary model", in which space itself expanded faster than the speed of light early in the Big Bang, but ''after'' different areas exchanged radiation to even out the temperature.

A number of solutions to this problem have been proposed, including several versions of an "inflationary model", in which space itself expanded faster than the speed of light early in the Big Bang, but ''after'' different areas exchanged radiation to even out the temperature.

However, there is no consensus on which explanation is correct, and each of the proposed solutions have their own problems.<ref name="Lisle" />  

However, there is no consensus on which explanation is correct, and each of the proposed solutions have their own problems.<ref name="Lisle" />  

 

== Bibliography ==

== Bibliography ==

* [http://www.nature.com/physics/highlights/6849-3.html#ref1 Inconstant constant?] ''Physical Review Letters 091301'' (9th August 2001)</ref>

* [http://www.nature.com/physics/highlights/6849-3.html#ref1 Inconstant constant?] ''Physical Review Letters 091301'' (9th August 2001)</ref>