Comment by djfergus
19 hours ago
In the Dwarkesh podcast about relativity they talked about one of the ways to prove einsteins theory was to observe a total eclipse - stars that should not be visible were predicted to bend their light rays and be able to be seen. Explorers launched grand expeditions in the early 1900s to be the first to witness and prove the phenomenon.
Made me yearn for a more heroic time.
They kept being thwarted by weather, clouds etc and eventually scientists worked out the theory could be easily proven by the red shift of stars by direct observation.
All times need heroes.
> one of the ways to prove einsteins theory
> scientists worked out the theory could be easily proven
Theories aren't proven.
Einstein, working from previous theories and models, wrote his hypothesis or proposal of General Relativity. This, too, gained consensus and gave rise to mathematical models. The models made predictions, and the predictions have been largely confirmed to date. It has proven to be a robust theory without notable falsification.
https://en.wikipedia.org/wiki/Gravitational_lens
Therefore, the theory enjoys popularity and prominence, and a good reputation in the scientific consensus. There is no "proving a theory" but the models had predicted the gravitational lensing phenomenon, and empirical observations confirmed these predictions as reality, and science marches on.