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It varies widely. Most black holes are believed to form when massive stars die. These very large stars generally last only a few million years and likely have been forming and dying since the formation of the first stars about 13 billion years ago. It is estimated that such a star dies every few seconds in the observable universe. Therefore black holes likely have a fairly even distribution of ages ranging from newly formed to nearly the age of the universe.
Wiki User
∙ 8y ago
Wiki User
∙ 10y agoTo become a black dwarf, a white dwarf must cool down so much that it no longer emits significant amounts of radiation. Since this takes much longer than the current age of the Universe, it is not expected that there will be any black dwarves currently. How much longer depends on the specific white dwarf, and on the temperature you want to achieve; here is one estimate quoted in the Wikipedia article on black dwarves: "Barrow and Tipler estimate that it would take 1015 years for a white dwarf to cool to 5 K"
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What are some examples of back dwarfs?
There are currently no black dwarfs. The time it would take for a white dwarf to cool to a black dwarf is greater than the current age of the universe.
Why have black dwarfs not been seen?
It is estimated that it would take trillions of years for a white dwarf to cool to a black dwarf, which is more than the current age of universe. So black dwarfs do not exist yet.
What does a black dwarf burn?
A black dwarf does not burn anything. A black dwarf is the cooled remnant of a dead star.
Does a star that has no fuel but glows faintly is a black dwarf?
Yes. It is a black dwarf.
When was Black Dwarf Hornbill created?
Black Dwarf Hornbill was created in 1861.
What is the relationship between a black dwarf and a white dwarf?
A white dwarf will cool very slowly to become a black dwarf. This process will take longer than the current age of the universe.
How far is the earth to the black dwarf star?
There are not black dwarfs. It would take trillions of years for a white dwarf to cool to a black dwarf, which is more than the current age of the universe.
What is the next stage after The white dwarf stage?
the next stage of a white dwarf is the black dwarf which is form when the degenerate electron slowly cools down by thermal radiation but the time required for a white dwarf to become a black dwarf is bigger than the current age of universe so the evidence of a black dwarf isn't found yet
How Many Black Dwarfs are thought to exist?
No black dwarfs are thought to exist. The estimated time it takes for a white dwarf to cool to a black dwarf is greater than the current age of the universe.
What are some examples of back dwarfs?
There are currently no black dwarfs. The time it would take for a white dwarf to cool to a black dwarf is greater than the current age of the universe.
Why have black dwarfs not been seen?
It is estimated that it would take trillions of years for a white dwarf to cool to a black dwarf, which is more than the current age of universe. So black dwarfs do not exist yet.
What does a black dwarf burn?
A black dwarf does not burn anything. A black dwarf is the cooled remnant of a dead star.
How long will it take for a brown dwarf to become a black dwarf?
A brown dwarf will never become a black dwarf. A black dwarf is what becomes of a white dwarf. This process takes hundreds of trillions of years.
When was The Black Dwarf created?
The Black Dwarf was created in 1817.
When did The Black Dwarf end?
The Black Dwarf ended in 1824.
What is a dim star that forms from a collapsed red giant?
It is called a white dwarf. It is the penultimate stage of a star the size of the Sun, which progresses with age from a yellow or orange star, to a red giant, to a white dwarf, and ultimately (after an immensely long period of time) a black dwarf. (There are no confirmed black dwarf stars because their formation may take much longer than the current age of the universe.)
What is a star formed from a white dwarf that has lost its energy?
A white dwarf is the last stage of 97% of star evolution. A white dwarf will eventually cool down, and become a "black dwarf". Black dwarves are not expected to exist yet; to cool down to that level, it would take longer than the current age of the Universe.
