Europa's surface. Galileo spacecraft image of the Tyre impact crater (centre) on the icy surface of Europa,a moon of Jupiter. The crater,surrounded by a 140-kilometre (km) wide system of rings,was formed by the impact of a mountain-sized comet or asteroid. Red areas consist of dirty ice which formed when water contaminated with rocky material came up through cracks in the ice and froze. Blue- green lines are ridges formed after the impact,probably due to tectonic motion of ice sheets over underlying water. Image taken from a distance of 29,000 km on 4 April 1997 by Galileo's solid state imaging (CCD) camera. The image is 214 km wide and the smallest visible objects are 595 metres across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NASA |
Bildgröße: | 4252 px × 4277 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |