@WellsiteGeo@DrPhiltill@chrislintott There are three armed spirals, but they are fairly rare. And even rarer in barred spirals, where you do sometimes get four arms (e.g. maybe the Milky Way), but mostly two.
📷 This NASA/ESA @HUBBLE_space Telescope image shows the distant galaxy merger IC 2431, which could even be a triple galaxy merger in progress 👉 https://t.co/yDXydFuAWj
The #AAS237 poster session I'm part of with @galaxyzoo related posters is happening now. This is a nice direct link to all poster in the session: https://t.co/UeBgKoWEmF