Astronomers and cosmologists are trying to figure out why this dwarf star has oxygen and so much of it since it is only about 60% as heavy as our sun and such a star would not have the capacity to make oxygen using its remaining fuel. This dwarf star is an enigma at the moment. However, it has been theorized to exist. Many theories attempt to explain the existence of such a star. One idea posits that the star may have been part of a binary system and collected enough helium to create the oxygen.