Brief suggestion to strengthen and complement the following exploration https://phys.org/news/2021-02-supermassive-black-holes-dark.html as well as diverse past suggestions such as https://www.epistemologyontologyfoundationinstitute.org/nature-decode/on-the-scientific-quest-for-dark-spectra-field:
Since observable or ordinary spectra-field and unobservable dark-spectra field are parts of or irreducible elements of the unified spectra-field. And in order for life to exist and evolve, dark spectra-field have to properly form in order for ordinary spectra-field to be stable; and gradually give rise to life and evolution process (i.e. dark to ordinary transition. And vice versa). Analyzing galaxies as briefly suggested here https://www.epistemologyontologyfoundationinstitute.org/nature-decode/on-the-scientific-quest-for-dark-spectra-field and diverse past discernments; and including such as galaxies and unobservable or dark entities characteristics such as spectra-field energy, spectra band or vibration, rhythm, and wave functions would better advance explorations and discoveries.
The efforts would also complement related sciences such as unified spectra-field; process of evolution and optimization in the known physical world. And beyond; the essence, nature, and ground of being. And nature; fractal and holistic nature processes and mechanisms; process of being and becoming; and among many others. And in particularly fundamental and foundation of sciences.
As an illustration: Black Hole Swarm Found Inside a Globular Cluster Solves a Mystery - YouTube
Epistemology of Life and Ontology of Existence Foundation and Institute