Ice volcano on Titan,artwork. Titan is the largest of Saturn's moons. It has been known for many years that Titan has an atmosphere. The two Voyager spacecraft found in 1980 that it may be denser than Earth's atmosphere,containing nitrogen and organic compounds,giving the effect of a reddish smog. Carl Sagan proposed that 'ice volcanoes' may replenish the atmosphere with hydrogen,a 'lava' water and liquid methane | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Hardy, David A. |
Taille de l’image : | 3537 px × 5031 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |