Tetl rock,Mars. The distinct layering of this rock intrigued NASA scientists. They were interested in whether it was igneous or sedimentary. If the latter,then that may indicate that at one point in Mars' history water was present on the surface. Photographed by the Mars exploration rover Spirit in the Columbia Hills,Mars,in September 2004 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NASA |
Taille de l’image : | 512 px × 512 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |