05/26/2026
This observation of Arp 107 captures the mid-infrared light emitted from its young stars, soot-like molecules, and even its central supermassive black hole.
The structure of the spiral galaxy has been disturbed by an off-center collision with an elliptical galaxy. This elliptical galaxy, the fuzzy blue object to the spiral galaxy’s left, has mostly older star populations with little dust or gas.
Collisions like these can disperse the existing structure of a galaxy, creating the gaps seen in the image and depriving new stars of the dust and gas they would need to form. However, they can also compress matter within the resulting system and ignite new bouts of star formation.
Credit: NASA, ESA, CSA, STScI.