Black Dwarf Star

Well, seeing the name ‘black dwarf star‘, the first question which pops-up in your mind would be “Do black dwarf stars really exist?” You may also think “There are white dwarf stars, so why not black dwarf stars?”

You will get your answers to the questions that are running in your mind. But first, let me do a small recap on how the stars process. So, a main sequence star like our Sun, currently fusing hydrogen into helium and continues with their fusion process until the core completely uses its fuel. During this fusion process, it will become a Red Giant Star and after millions of years it becomes a White Dwarf Star. (For a detailed process refer White Dwarf Stars, The Life of a star)

This is the part you need to pay attention to the words. What happens next has never been seen before, because it hasn’t happened yet in this observable universe. All the white dwarf stars in this Universe are still cooling slowly. This process might take another tens of hundreds of billions of years for a white dwarf to stop producing light and become a black dwarf star.

The Universe simply isn’t old enough to form one yet. We are still young. So, as a conclusion, practically speaking, there are no black dwarfs yet and theoretically speaking, there could be one in the future.