Encyclopedia > Black dwarf

  Article Content

Black dwarf

A Black dwarf is the remains of a sun-sized star which has evolved to a white dwarf and subsequently cooled down such that it no longer gives out radiation. None exist in our universe, as the time taken for a white dwarf to cool to such a degree is longer than the lifespan of the universe to date.

Even at the epoch when black dwarfs exist, they will be extremely difficult to detect, since they will emit little radiation above thermal radiation at a temperature not much above that of the cosmic microwave background radiation. The only way to detect them will be through their gravitational influence (which, being low mass stars, will not be much).



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Quioque, New York

... town the population is spread out with 22.3% under the age of 18, 8.0% from 18 to 24, 31.0% from 25 to 44, 21.9% from 45 to 64, and 16.9% who are 65 years of ag ...

 
 
 
This page was created in 33.3 ms