Detail of Cygnus Loop Nebula (via Hubble)
This composite image shows the distribution of dark matter, galaxies, and hot gas in the core of the merging galaxy cluster Abell 520, formed from a violent collision of massive galaxy clusters that is located about 2.4 billion light years from Earth. (via Chandra)
NGC 5247, NGC 4321, NGC 1300, NGC 4030, NGC 2997 and NGC 1232.
Apex telescope captured this image of part of the Taurus Molecular Cloud, the nearest (450 light-years) large star formation region to Earth, showing a more than ten light-years long filament of cosmic dust. Above the filament you can see a bright star, it’s φ Tauri.