Before the launch of HST, estimates of the Hubble constant typically had errors of up to 50%, but Hubble measurements of Cepheid variables in the Virgo Cluster and other distant galaxy clusters provided a measured value with an accuracy of +-10%, which is consistent with other more accurate measurements made since Hubble's launch using other techniques.While Hubble helped to refine estimates of the age of the universe, it also cast doubt on theories about its future.. 
Ìpín ground-based Telescope can image some of the same waVeléngths as Hubble, sometimes challenge hst in terms of resolution (via àdáDúró Optics), have much larger light-gathering power, and can be upgraded more easily, but cannot yet match the Hubble's excellent rẹ̀ over a wide field of view with the very dark background of space.plans for a jọba successor _*prospered as the next Generation Space Telescope Project, which culminated in plans for the James web space telescope (jwst), the prospered successor of Hubble.. 