A group of galaxies — some rich in dark matter, and some lacking dark matter completely — could be explained by a violent, destructive event from their past.
Galaxies in the middle of clusters are usually huge, elliptical galaxies. So what is this spiral-shaped imposter doing here?
Many astronomers believe that AGN activity is responsible for suppressing star formation. However, it appears that maybe the past behaviour of AGN is what’s really to blame.
Active Galactic Nuclei are some of the brightest objects in the Universe. But what is responsible for switching on these supermassive engines?
An accidental discovery of two new galaxies, hiding behind clouds of dust in the furthest reaches of the Universe.