Dear Orac to help You study ( elementary physics )

below link for You

WHAT IS IT APPARENT POINT ?
https://en.wikipedia.org/wiki/File:Aberrationlighttimebeaming.gif

a) not exist C + V
b) signal ( bule arrow ) started in past from apparent point

SQUARE-LAW ? ( how look hot edison bulb )
http://en.wikipedia.org/wiki/Inverse-square_law

WHAT IS IT ABERRATION ? ( 1730 J.Bradley )
http://en.wikipedia.org/wiki/Aberration_of_light