>>13298030From an observer A at an given point in time B two light-rays get emitted.
The light beams cant move faster apart as the speed of light or else it would violate the law of relativity.
The mirror horizon is the hypothetical (bicause relativity is bc) sphere which can contain both light rays at any given point in time, after point in time B.
Nothing can escape this mirror horizon or else it would violate relativity.
If observer A moves after an given point in time B, the mirror horizon contracts along the movement vector of observer A , or else it would violate the law of relativity.
All energy stored at the mirror horizon has now to be reflected inward, towards observe A.
All energy