Scientists are in awe because of an ultra-massive white dwarf star that is absolutely like nothing they have ever seen before. This star is slightly more massive than our Sun, and scientists claim that it could help us understand the structure of the universe.
Scientists say that the star has “unusually high” levels of carbon in its atmosphere, which cannot be explained through the normal process of a star’s evolution. Apparently the star has formed when two white dwarfs merged into each other about 1.3 billion years ago – and failed to explode as a supernova, as they normally would.
That failure left the unusual star and could help us understand how stars merge. This dwarf star is special also because it marks the first time that astronomers have identified a merged white dwarf by using its atmosphere as a clue.
Lead author Dr Mark Hollands, from the University of Warwick’s department of physics, said: “We have a composition that we can’t explain through normal stellar evolution. The only way you can explain it is if it was formed through a merger of two white dwarfs.”