White dwarf compared to Sun & Earth
Numéro d’image : 11885803
| White dwarf star. Artwork of a white dwarf star (blue/white,centre right) comparing its size to that of the Sun (left) and the Earth (right). A white dwarf is the collapsed core of a star which has exhausted its nuclear fuel. A white dwarf is extremely dense,containing the mass of a Sun- sized star in a sphere not much larger than the Earth. Immediately after its formation it is extremely hot. As it has no source of energy production within it,however,it gradually cools down,ultimately becoming a black dwarf. This process takes a very long time,and it is thought the universe is not yet old enough for any black dwarfs to exist | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Garlick, Mark |
| Taille de l’image : | 3543 px × 2598 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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