Extrasolar planets orbiting HR 4796A. Artwork of two hypothetical extrasolar planets (lower right,and left of middle) orbiting the star HR 4796A (far left). Between the two planet lies a dust ring that is 120 billion kilometres across. The gravitational forces of the two planets create a 'shepherding effect' confining the dust ring to a specific area. HR 4796A is several times more massive than the Sun. It lies 320 light years away in the constellation Libra | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Cook, Lynette |
Taille de l’image : | 5400 px × 3505 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
|