Elroch - triangulation would work on a level surface not on a spherical one,
The triangulation is in outer space, which is very close to flat.
furthermore, Light Years is not a measurement......it is strictly an assumption.
You need to learn the meaning of words. It is a CONCLUSION, not an assumption.
Take the sun for a better example....how did they determine the distance?
They deduced it by combining many separate observations. I will provide a link.
Simple. They guessed.
No, that is a bad guess. See the previous comment.
Copernicus said 3 million. Kepler said 12 million. others said 50 and some said more than a 100 million miles away.
The Sun has been KNOWN to be around 93 million miles away for a long time now. Of early calculations, Hughens was the only one that involved a guess (about the size of Venus). He was lucky to be nearly right, but his calculation is rightly not respected like those that involved no guesses are. The crucial observation that made no guesswork necessary was of the transit of Venus in 1761.
See the history of estimation of the Sun's distance.
Newton Came along and said the distance mattered not.
No, that is a made-up claim by an unreliable source called @noodles2112. What Newton did do was arrive at a reliable, adequately accurate model of the physics that governed all motion in the Solar System. Still working fine today.
Elroch - triangulation would work on a level surface not on a spherical one, furthermore, Light Years is not a measurement......it is strictly an assumption.
Take the sun for a better example....how did they determine the distance?
Simple. They guessed. Copernicus said 3 million. Kepler said 12 million. others said 50 and some said more than a 100 million miles away.
Newton Came along and said the distance mattered not.