Are all spiral shaped galaxies spiral because they have a huge blackhole at their centre ?Report
The Milky Way galaxy we live in has a black-hole in its center. It is spiral in shape. Most galaxies are either spherical or spiral in shape. Is our galaxy spiral shaped due to the central black-hole pulling the galaxy into it like a whirlpool? Do all other spiral galaxies have black-hole centers?
I think that some galaxies spiral because they’re being pulled in towards another galaxy, but for a galaxy to be able to “eat” another galaxy like that they would probably have to have a black hole at the centre too. Wikipedia at least thinks that “Most galaxies are believed to have supermassive black holes at their centers.”