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:
About the Image
|Release date:||26 August 2008|
|Size:||792 x 196 px|
About the Object