Try the original geometric principles behind finite light distance -

http://dbhs.wvusd.k12.ca.us/webdocs/...emer-1677.html

Finte light distance is an astronomical effect that is neither an
illusion nor does it represent an actual physical motion,it can't be
added,divided or squared and it remains an astronomical principle
hijacked by dumb theorists who do not know the value of the Mora
Luminis.