Habitable alien planet. Artwork of an Earth-like alien planet with a ring system,seen from one of its 2 moons (other moon is at centre). A planet's orbit and its size have to fit within a narrow range in order to have a surface temperature suitable for liquid water,and to retain an atmosphere. The number of other habitable planets in the Milky Way is not known,but has been estimated at anything between 1 (just Earth) and as many as 10 billion | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Garlick, Mark |
Taille de l’image : | 3799 px × 5750 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |