Voyager 2 colour composite image of Uranus,taken on January 25,1986,as the spacecraft left the planet behind & set off towards Neptune. The thin crescent of Uranus,seen here,shows a pale blue- green colour. This results from the presence of methane in the planet's atmosphere,which absorbs red wavelengths of light,leaving a predominantly blueish hue. The crescent tends to become white at its extreme edge due to the presence of a high- altitude haze | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NASA |
Taille de l’image : | 2850 px × 4491 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |