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How do galaxies grow?
Composite colour-image of the brightest galaxies in four groups located about 4 billion light-years away. The galaxies are ordered in increasing stellar mass, i.e. a rough time sequence. The brightest galaxies in group 1 and 2 both have obvious bright, gravitationally bound companions (see the crosses in this image).
Crédit:ESO
À propos de l'image
| Identification: | eso0824c |
| Type: | Collage |
| Date de publication: | 26 août 2008 |
| Communiqués de presse en rapport: | eso0824 |
| Taille: | 792 x 196 px |
