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They can be any age. A brown dwarf is a failed star, one that is not massive enough to start nuclear fusion. A brown dwarf may have formed recently, or could be almost as old as the universe itself.
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∙ 9y ago
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What do stars do when they get old?
Some stars become a black hole or a black dwarf.
Very small stars that are usually old and running out fuel are called?
Those are dwarf stars, which start out as white dwarfs and as they (very slowly) cool, become red dwarfs and eventually brown dwarfs.
What is a small star that only gives of faint light and are cool?
That can either be an old white dwarf, a red dwarf. or a brown dwarf.
What is the difference between young stars old stars and dead stars?
The difference is ones dead. Ones young and ones old
Are blue stars are young or old?
young
Do dwarf stars emit light?
Brown Dwarfs (maybe not true stars)Red Dwarfs (on the main sequence)Orange Dwarf (on the main sequence)Yellow Dwarfs (stars smaller than our sun but on the main sequence)White Dwarfs (old stars that have run out of hydrogen and are now off the main sequence)Neutron Stars (old large stars who's cores have collapsed during a supernova)---------------------------------------------------------------------------------Red dwarf - Like Proxima Centauri.White dwarf - A degenerate star. The remains of a Sun like star.Yellow dwarf - A G type main sequence star, like our own SunBlue dwarf - A hypothetical star formed from a red dwarf.Brown dwarf - A star that did not have enough mass to initiate nuclear fusion.Black dwarf - A hypothetical star formed when a white dwarf has cooled to absolute zero.Orange dwarf. A K type main sequence star, like Alpha Centauri B
Why does the universe not contain any black dwarf stars?
It is not old enough. It is estimated that it would take trillions of years for a white dwarf to a black dwarf. The universe is only about 13.8 billion years old.
Are there any black dwarf stars?
No. It is estimated that it would take trillions of years for a white dwarf to cool to a black dwarf. The universe is not old enough for that to have happened yet.
Are giant dwarfs made up of young or old stars?
Giant Dwarves are old stars.
How can you tell how old a star is?
In star lives, there are no old blue stars. All blues stars are young.
Do spiral galaxies have young stars middle age stars or old stars?
It has all types of stars with different ages
Are blue stars younger than red stars?
Not necessarily. Blue stars are short-lived compared to other stars, so they can never be very old, but a red dwarf star can be any age.
