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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Garlick, Mark |
Bildgröße: | 3799 px × 5750 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |