Internal heat is the heat source from the interior of celestial objects, such as stars, brown dwarfs, planets, moons, dwarf planets, and (in the early history of the Solar System) even asteroids such as Vesta, resulting from contraction caused by gravity (the Kelvin–Helmholtz mechanism), nuclear fusion, tidal heating, core solidification (heat of fusion released as molten core material solidifies), and radioactive decay. The amount of internal heating depends on mass; the more massive the object, the more internal heat it has; also, for a given density, the more massive the object, the greater the ratio of mass to surface area, and thus the greater the retention of internal heat. The internal heating keeps celestial objects warm and active.
| Attributes | Values |
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| rdfs:label
| - Internal heating (en)
- Chaleur interne (fr)
- 내부열 (ko)
- Calor interno (pt)
- 內熱 (zh)
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| rdfs:comment
| - Internal heat is the heat source from the interior of celestial objects, such as stars, brown dwarfs, planets, moons, dwarf planets, and (in the early history of the Solar System) even asteroids such as Vesta, resulting from contraction caused by gravity (the Kelvin–Helmholtz mechanism), nuclear fusion, tidal heating, core solidification (heat of fusion released as molten core material solidifies), and radioactive decay. The amount of internal heating depends on mass; the more massive the object, the more internal heat it has; also, for a given density, the more massive the object, the greater the ratio of mass to surface area, and thus the greater the retention of internal heat. The internal heating keeps celestial objects warm and active. (en)
- 내부열은 중력과 방사성 물질 붕괴로 인하여, 행성, 갈색 왜성, 항성 등 천체의 내부에서 나오는 열원을 말한다. 내부열의 정도는 질량에 달려 있는데, 천체의 질량이 클수록 내부열의 강도도 올라간다. 내부열은 천체를 데우고 활동하도록 만든다. 내부열은 천체들이 처음 생겨났을 때 발생한 열이 남은 것이다. 항성을 제외하고, 모든 천체는 나이를 먹을수록 천천히 내부열을 잃어간다. (ko)
- Calor interno é a fonte de calor no âmago de corpos celestes tais como planetas, anãs marrons e estrelas, causada pela gravidade e pelo decaimento de materiais radioativos. O montante de calor interno depende da massa; quanto mais maciço o objeto, mais calor interno ele possui. O calor interno mantém objetos celestiais quentes e ativos. Como o calor interno é remanescente do processo de formação dos corpos celestes, a medida que estes envelhecem, perdem calor gradualmente. A princípio, isso só não é válido para as estrelas (que seguem as normas de evolução estelar). (pt)
- 內熱是源自天體內部，如行星、卫星、棕矮星和恆星，由引力坍缩、核聚变、潮汐加热、核心凝固（核心物质由液态凝固为固态时会释放热能）、放射性物質衰變等原因產生的熱。內熱與天體的質量有關，質量越大內熱就越多。內熱能使天體溫暖而活躍。 (zh)
- La chaleur interne est la source d'énergie thermique contenue à l'intérieur des objets célestes, tels que les étoiles, les naines brunes, les planètes, les lunes, les planètes naines résultant de la contraction causée par la gravité (mécanisme Kelvin–Helmholtz), la fusion nucléaire, le réchauffement par effet de marée, la solidification du noyau (enthalpie de fusion libérée lorsque le matériau du noyau fondu se solidifie) et la radioactivité. (fr)
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| - Internal heat is the heat source from the interior of celestial objects, such as stars, brown dwarfs, planets, moons, dwarf planets, and (in the early history of the Solar System) even asteroids such as Vesta, resulting from contraction caused by gravity (the Kelvin–Helmholtz mechanism), nuclear fusion, tidal heating, core solidification (heat of fusion released as molten core material solidifies), and radioactive decay. The amount of internal heating depends on mass; the more massive the object, the more internal heat it has; also, for a given density, the more massive the object, the greater the ratio of mass to surface area, and thus the greater the retention of internal heat. The internal heating keeps celestial objects warm and active. (en)
- La chaleur interne est la source d'énergie thermique contenue à l'intérieur des objets célestes, tels que les étoiles, les naines brunes, les planètes, les lunes, les planètes naines résultant de la contraction causée par la gravité (mécanisme Kelvin–Helmholtz), la fusion nucléaire, le réchauffement par effet de marée, la solidification du noyau (enthalpie de fusion libérée lorsque le matériau du noyau fondu se solidifie) et la radioactivité. La quantité d'énergie interne dépend de la masse : plus l'objet est massif, plus il a de chaleur interne. Aussi, pour une densité donnée, plus l'objet est massif, plus le rapport masse sur surface est grand, et donc plus la rétention de chaleur interne est importante. La chaleur interne permet aux objets célestes de rester chauds et actifs géologiquement. (fr)
- 내부열은 중력과 방사성 물질 붕괴로 인하여, 행성, 갈색 왜성, 항성 등 천체의 내부에서 나오는 열원을 말한다. 내부열의 정도는 질량에 달려 있는데, 천체의 질량이 클수록 내부열의 강도도 올라간다. 내부열은 천체를 데우고 활동하도록 만든다. 내부열은 천체들이 처음 생겨났을 때 발생한 열이 남은 것이다. 항성을 제외하고, 모든 천체는 나이를 먹을수록 천천히 내부열을 잃어간다. (ko)
- Calor interno é a fonte de calor no âmago de corpos celestes tais como planetas, anãs marrons e estrelas, causada pela gravidade e pelo decaimento de materiais radioativos. O montante de calor interno depende da massa; quanto mais maciço o objeto, mais calor interno ele possui. O calor interno mantém objetos celestiais quentes e ativos. Como o calor interno é remanescente do processo de formação dos corpos celestes, a medida que estes envelhecem, perdem calor gradualmente. A princípio, isso só não é válido para as estrelas (que seguem as normas de evolução estelar). (pt)
- 內熱是源自天體內部，如行星、卫星、棕矮星和恆星，由引力坍缩、核聚变、潮汐加热、核心凝固（核心物质由液态凝固为固态时会释放热能）、放射性物質衰變等原因產生的熱。內熱與天體的質量有關，質量越大內熱就越多。內熱能使天體溫暖而活躍。 (zh)
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