Mars exploration,artwork. In the distance a Mars rover explores the Martian surface. Mars is a rocky desert world with no surface water. Its gravity is about one third of that on Earth. The atmosphere is mostly carbon dioxide and surface temperatures are well below freezing. Human missions to explore Mars have been planned since the 1950s,usually involving a period of 10 to 30 years to develop the necessary technology and resources | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Van Ravenswaay, Detlev |
Bildgröße: | 5315 px × 3898 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |