Globular cluster NGC 1851. Globular clusters are spherical groups of very old stars that are tightly bound by gravity and orbit a dense central core. They can contain over a million stars within a volume only a few hundred light years across. They formed billions of years ago,and are distributed in halos around many galaxies,including the Milky Way. NGC 1851 has a mass of 551,000 solar masses. It is around 39,500 light years from Earth,in the constellation of Columba. This image was obtained on 17 November 2015 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Peach, Damian |
Taille de l’image : | 3283 px × 2689 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |