Recent content by gsonnet911

how does this help in finding the distance to non-cepheid stars whose distance away is too great to be measured using the parallax method?

Can someone please explain how the distance to stars/galaxies can be determined using Cepheid variable stars? I know that you can find the distance to the cepheid using the period of its contraction/expansion but how is this used? Im in high school so please use layman's terms :)