A newly discovered dwarf galaxy with a limited oxygen supply may offer astronomers new insights in the formation and evolution of the early universe. "We found that a considerable fraction of the stellar mass of the galaxy was formed only a few million years ago, making this one of the best counterparts we've found of primordial galaxies," Trinh Thuan, an astronomer at the University of Virginia, said in a news release. "Because of its extremely low oxygen level, this galaxy serves as an accessible proxy for star-forming galaxies that came together within one to two billion years after the Big...