Tags: Galaxy.
NGC 1156 is a dwarf irregular galaxy in the Aries constellation of the type ibm. It is considered a Magellanic-type irregular. The galaxy has a larger than average core and contains zones of contra-rotating gas. The counter-rotation is thought to be the result of tidal interactions with another gas rich galaxy some time in the past.The AGES survey has discovered a candidate dark galaxy close to NGC 1156 one of only a few so far found.It has a H II nucleus.
