User:Delta xFrom Wikipedia, the free encyclopedia Welcome from Delta x. Galaxy Cluster Abell 1689 imaged by Hubble Space Telescope The 100 inch (2.5 m) Hooker telescope at Mount Wilson Observatory near Los Angeles, California, used by Hubble to measure galaxy redshifts and discover the general expansion of the universe.
Welcome from Delta x. Galaxy Cluster Abell 1689 imaged by Hubble Space Telescope The 100 inch (2.5 m) Hooker telescope at Mount Wilson Observatory near Los Angeles, California, used by Hubble to measure galaxy redshifts and discover the general expansion of the universe.