Black dwarf
A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently that it no longer emits significant heat or light. Because the time required for a white dwarf to reach this state is calculated to be longer than the current age of the universe (13.8 billion years), no black dwarfs are expected to exist in the universe yet, and the temperature of the coolest white dwarfs is one observational limit on the age of the universe. A white dwarf is what remains of a main-sequence star of low or medium mass (below approximately 9 to 10 solar masses (M☉)) after it has either expelled or fused all the elements for which it has sufficient temperature to fuse. What is left is then a dense sphere of electron-degenerate matter that cools slowly by thermal radiation,
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Black dwarf
A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently that it no longer emits significant heat or light. Because the time required for a white dwarf to reach this state is calculated to be longer than the current age of the universe (13.8 billion years), no black dwarfs are expected to exist in the universe yet, and the temperature of the coolest white dwarfs is one observational limit on the age of the universe. A white dwarf is what remains of a main-sequence star of low or medium mass (below approximately 9 to 10 solar masses (M☉)) after it has either expelled or fused all the elements for which it has sufficient temperature to fuse. What is left is then a dense sphere of electron-degenerate matter that cools slowly by thermal radiation,
has abstract
A black dwarf is a theoretical ...... black holes or neutron stars.
@en
Czarny karzeł – hipotetyczna g ...... oddziaływania grawitacyjnego.
@pl
Een zwarte dwerg is een hypoth ...... via hun zwaartekrachtsinvloed.
@nl
Ein schwarzer Zwerg ist eine h ...... nze des Alters des Universums.
@de
Uma anã negra é uma estrela an ...... egros ou estrelas de nêutrons.
@pt
Una enana negra es un astro hi ...... o con estrellas de neutrones.
@es
Una nana nera è l'ipotetico ul ...... neri o le stelle di neutroni.
@it
Une naine noire est l'évolutio ...... a plus qu'un atome de matière.
@fr
Чёрные ка́рлики — остывшие и в ...... ого электронного газа их недр.
@ru
القزم الأسود أو القزم المعتِم ...... تحديده من خلال تأثير الجاذبية.
@ar
Wikipage page ID
Wikipage revision ID
740,109,186
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comment
A black dwarf is a theoretical ...... s slowly by thermal radiation,
@en
Czarny karzeł – hipotetyczna g ...... ę w ten sposób czarnym karłem.
@pl
Een zwarte dwerg is een hypoth ...... via hun zwaartekrachtsinvloed.
@nl
Ein schwarzer Zwerg ist eine h ...... nze des Alters des Universums.
@de
Uma anã negra é uma estrela an ...... acionais da idade do universo.
@pt
Una enana negra es un astro hi ...... etectar su campo gravitatorio.
@es
Una nana nera è l'ipotetico ul ...... n più visibile ad occhio nudo.
@it
Une naine noire est l'évolutio ...... se transformer en naine noire.
@fr
Чёрные ка́рлики — остывшие и в ...... ростью последующего остывания.
@ru
القزم الأسود أو القزم المعتِم ...... تحديده من خلال تأثير الجاذبية.
@ar
label
Anã negra
@pt
Black dwarf
@en
Czarny karzeł
@pl
Enana negra
@es
Naine noire
@fr
Nana nera
@it
Schwarzer Zwerg
@de
Zwarte dwerg
@nl
Чёрный карлик
@ru
قزم أسود
@ar