Apr 12, 11The gravitational lensing effect means that they have been able to determine fascinating insights about the galaxy that would not normally be visible even with Hubble Among their discoveries is that the distant galaxy's stars are very old, meaning that galaxies probably formed earlier in cosmic history than we first thoughtJan 01, 01We investigate strong lensing of galaxies in the Hubble Deep Field by foreground groups and clusters of galaxies with masses from 10 13 to 10 15 M solar Over this mass range, groups with the Navarro, Frenk, &Jul 21, 16Galaxy shape also plays a role in discoveries in the Frontier Fields' six parallel fields, which are unaffected by gravitational lensing but provide a view into space almost as deep as Hubble's famous Ultra Deep Field, with three times the area It's well known that galaxies collide and interact, drawn to one another by gravity Discoveries Highlights Shining A Light On Dark Matter Nasa Hubble deep field gravitatio...