Astronomers report that they have observed the most metal-poor galaxy ever seen in the Local Universe, a region of space within about one billion light-years from Earth. This Hubble Space Telescope image shows the nearby dwarf galaxy AGC 198691. Image credit: NASA / A. Hirschauer & J. Salzer, Indiana University / J. Cannon, Macalester College / K. McQuinn, University of Texas. This faint galaxy, known as AGC 198691 or Leoncino Dwarf, is relatively...