Translation of "amas galactique" into English

On a déjà observé et photographié des milliers de ces amas galactiques.

Thousands of these galactic clusters already have been observed and photographed.

Mais pour analyser les amas galactiques, les astronomes et astrophysiciens doivent pouvoir déterminer les structures tridimensionnelles et les masses d'amas.

But in order to analyse galaxy clusters, astrophysicists need to be able to accurately determine the three-dimensional (3D) structures and masses of clusters.

Les amas globulaires typiques sont beaucoup plus massifs que les amas galactiques. Chacun peut contenir entre quelques milliers et plus d'un million d'étoiles.

Typical globular clusters are far more massive than open clusters; each one may contain anywhere from a few thousand to a million or more stars.