Uranus. Artwork showing Uranus as seen from Miranda,one of its moons. Like Jupiter,Saturn and Neptune,Uranus is a gas giant,with an atmosphere mainly composed of hydrogen and helium. The atmosphere of the planet occupies about 30% of its radius and overlies an ocean of water,ammonia and methane at very high pressure (20 million kiloPascals) and temperature (2500 Kelvin). Miranda is composed of rock and water ice. It has a diameter of 670 kilometres (km) and a mean distance from Uranus of about 130,000 km. Its surface has a surprising range of features,including ridges,impact craters with diameters up to 50 km,and canyons as deep as 20km | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Butler, Chris |
Taille de l’image : | 4325 px × 2990 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |