Work in progress
Stellar parallax is a method, using basic trigonometry, to determine the distance of stars within our galaxy. Using concrete and visual examples, I explain the methodology, why distance are defined in parsecs, and the limitation of the technique.
4b. Determining Distance - Stellar parallax
Stellar parallax is not a suitable method for distance beyond 100pc. Henrietta Leavitts work led to a better way of deterring steel;ar distance, through the use of variable stars called Cepheid variables