Comet,artwork. Comets are bodies of ice and dust that enter the inner solar system from the outer solar system. As they approach the Sun,the heat boils the ice,producing a coma around the nucleus,along with a tail stretching out behind it (upper left). The direction of the tail indicates the direction of the Sun. Comets passing near the Earth can be a spectacular sight,and have been seen as omens of doom. Comets have elongated orbits and can have a short or long period,ranging from less than 200 years to more than tens of thousands of years. They can vary in size from hundreds of metres to many kilometres across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Lunau, Claus |
Bildgröße: | 4458 px × 3933 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |