Artwork of the nucleus of a comet
Bildnummer 11764350
| Artwork of the icy core (nucleus) of a comet. Comets are mostly frozen ices (water,methane and ammonia) and dust,and they are often referred to as 'dirty snowballs'. The nucleus of a comet can be many kilometres across. They orbit the Sun on highly elliptical orbits. When far from the Sun they are inert; but as they approach the inner Solar System the Sun's heat warms them up,surface ices begin to melt and jets of high-pressure gases begin to erupt from the surface. It is these gases that give the comet its distinctive coma (head) and tail | |
| Lizenzart: | Lizenzfrei |
| Credit: | Science Photo Library / Garlick, Mark |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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