A protostar is a star in the process of formation. They are created when a globule – a dusty and gaseous nebula – condenses under gravity. The globule acts as a cocoon. Because of this,protostars are generally invisible to the universe at large,except at infrared wavelengths. Protostars may be flattened out by rapid rotation,and are probably surrounded by a vast disc of gas and dust,around which planets will one day form | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Garlick, Mark |
Taille de l’image : | 5953 px × 2936 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |