Galactic Structure: Supermassive Black Hole

Galactic Structure: Supermassive Black Hole

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Galactic Structure: Supermassive Black Hole, Dark Matter Halo, and Stellar Disk


At the center of our galaxy is a supermassive black hole known as Sagittarius A*. This black hole has a mass equivalent to about four million suns and is surrounded by a disk of gas and dust. While the black hole has an immense gravitational pull, it is relatively inactive. The majority of the galaxy's mass is composed of dark matter, which is invisible and only detectable through its gravitational effects. Dark matter forms a diffuse halo that surrounds the visible matter in the galaxy and is responsible for holding the galaxy together. The dark matter halo plays a crucial role in the evolution and formation of galaxies, as it provides the initial "seeds" for the formation of visible matter through gravitational collapse.

I used the blackest paint that absorbs 98% light to paint the black hole.


Graphite, Ink on Aged Paper
•Original artwork created by Daniel Martin Diaz. Ships unframed.
•Custom frame available. Send email to
  for more details. $250 extra cost depending on artwork size.