This article presents briefly some information relative to four galaxies tha have interaction with one another. Actually, I thought the pic of them together is the most interesting part of this. These are 4 huge galaxies, probably Milky Way Galaxy size, and all are in a seemingly smallish field of view. Since they are likely 100,000 +/- light years in diameter, it is obvious that they they are not really so close together. but do apparently interact.
Space.com
by Sarah Lewin, Staff Writer | June 19, 2015 03:01pm ET
Talk about galactic drama. Some of the strangest galaxies in the universe congregate in groups like this motley crew, where the Hubble Space Telescope has found examples of furious star creation, bright radiation and active supermassive black holes. Hubble mission representatives described the galactic arrangement as a "bizarre cosmic quartet" in an image description.
Of the four galaxies pictured in the close-up image, the leftmost has heated gas at its core that blasts out infrared radiation, and its neighbor furiously creates new stars — it's a starburst galaxy — and lacks a monster black hole at its center. The two galaxies to the right each harbor huge, active black holes at their cores and shine brightly in nonvisible wavelengths. The rightmost is so bright with X-rays that it's likely its gas and dust were ripped away by other galaxies' close encounters.
http://www.space.com/29704-bizarre-cosmic-galaxy-quartet-hubble-photo.html
Four oddball galaxies are profiled in this photo from the Hubble Space Telescope. The group they're from, HCG6, is rich with unusual, active and strange galactic interactions.
(click on pic for larger view)
(http://s17.postimg.org/mnsp98h8f/Screen_Shot_2015_07_26_at_9_45_37_PM.jpg)