A combination of images from Hubble and the Chandra X-ray spacetelescopes has revealed a collision between 2 galaxy-clusters. In this image the red glow is colliding hot gasses and blue represents the majority of the cluster-masses

2 of ESA’s space observatories have combined to create a multi-wavelength view of violent events taking place within the giant galaxy of Centaurus A. The new observations strengthen the view that it may have been created by the cataclysmic collision of two older galaxies.

A study of galaxies in the deepest far-infrared image of the sky, obtained by the Herschel Space Observatory, highlights the two contrasting ways that stars formed in galaxies up to 12 billion years ago.