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).

Credit:

ESO

Over de afbeelding

Id:eso0824c
Type:Collage
Publicatiedatum:26 augustus 2008
Gerelateerde berichten:eso0824
Grootte:792 x 196 px

Over het object

Naam:Galaxies
Type:Early Universe : Galaxy : Type : Interacting
Categorie:Galaxies

Afbeeldingstypen

Grote JPEG
105,6 KB