Question

Do all spiral galaxies have black holes at their centre..??....expliain it....​

Answer 1

yes every galaxy have a super massive black hole in its centre or milky way galaxy to has a super massive black hole in its centre named sagittarius -A star . the black holes along with dark matter keep the galaxies together without it all the solar system would have been independent and would not have formed galaxies

Answer 2

Answer:

Most spiral galaxies contain a central bulge surrounded by a flat, rotating disk of stars. The bulge in the center is made up of older, dimmer stars, and is thought to contain a supermassive black hole. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way.

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