Hubble Data Shows Dwarf Galaxies Expel Majority of Their Oxygen

Research using NASA's Hubble Space Telescope indicates that dwarf galaxies are inefficient at retaining oxygen produced by their stars, expelling most of it into space. A study of 37 nearby dwarf galaxies found they typically hold onto only 11% of generated oxygen, significantly less than larger galaxies. This phenomenon, likely caused by supernova explosions, suggests these smallest galaxies are major contributors to distributing oxygen throughout the universe.