A mysterious star with an atmosphere dominated by oxygen has left scientists scratching their heads.
Discovered 1,200 light years away in the constellation Draco, the star has been described as “very strange” and is the only one ever discovered that exhibits such peculiar properties.
A white dwarf is typically what remains after a star sheds its outer layers, leaving behind the core. Normally when this happens the star’s heavier elements such as oxygen and carbon will sink down to the center of the core while the lighter elements, such as hydrogen and helium, float to the top.
In this case however, the white dwarf star discovered by astronomers possesses an atmosphere comprised of 99.99% oxygen – See more at: http://www.unexplained-mysteries.com/news/293221/white-dwarf-stars-atmosphere-is-99-oxygen#sthash.JhuKDkiE.dpuf