International Journal of Physics
ISSN (Print): 2333-4568 ISSN (Online): 2333-4576 Website: Editor-in-chief: B.D. Indu
Open Access
Journal Browser
International Journal of Physics. 2021, 9(1), 36-41
DOI: 10.12691/ijp-9-1-4
Open AccessArticle

The Galaxies and the Dark Matter

José Luís Pereira Rebelo Fernandes1,

1Independent Researcher since 2005, Engineer, graduated from the University of Porto

Pub. Date: December 21, 2020

Cite this paper:
José Luís Pereira Rebelo Fernandes. The Galaxies and the Dark Matter. International Journal of Physics. 2021; 9(1):36-41. doi: 10.12691/ijp-9-1-4


To understand the rotation of galaxies, the idea of the existence of dark matter was created. Through a better observation of reality, analyzing the distribution of matter, we conclude that this distribution is very close to that proportional to the radius cube, thus remembering the spherical distribution. With the appearance of the accretion disk, it retained a large part of the matter that gravitated the gravitational sphere of the galaxy, maintaining its distribution proportional to the cube of the radius, part of the total matter will be contained in the Accretion Disc and the rest will continue to gravitate to the galaxy. Given the large size of the galaxy, the latter may be practically printable given its dispersion in the total volume of the galaxy. We conclude that the idea of the existence of dark matter is not necessary to justify the rotation of the galaxy.

universe gravitation potential gravity velocity mass physics variable

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit


[1]  José Luís Pereira Rebelo Fernandes, The Relativity of the Time with the Universal Density of Potential Energy at Different Stationary Reference Frames, International Journal of Physics. 2020, 8(1), 11-13.
[2]  José Luís Pereira Rebelo Fernandes, The Universal Gravitational Variable, International Journal of Physics. 2020, 8(1), 35-38.
[3]  José Luís Pereira Rebelo Fernandes, The Real Removal of the Moon from the Earth. The Age of the Universe, International Journal of Physics. 2020, 8(3), 114-119.
[4]  José Luís Pereira Rebelo Fernandes, The Variation of the Atomic Radius with the Universal Density of Potential Energy, International Journal of Physics. 2020, 8(4), 127-133.
[5]  Boehle, A.; Ghez, A. M.; Schödel, R.; Meyer, L.; Yelda, S.; Albers, S.; Martinez, G. D.; Becklin, E. E.; Do, T.; Lu, J. R.; Matthews, K.; Morris, M. R.; Sitarski, B.; Witzel, G. (October 3, 2016). “An Improved Distance and Mass Estimate for SGR A* from a Multistar Orbit Analysis” (PDF). The Astrophysical Journal. 830 (1): 17.
[6]  David Freeman (May 25, 2018). “The Milky Way galaxy may be much bigger than we thought” (Press release). CNBC. Archived from the original on August 13, 2018. Retrieved August 13, 2018.
[7]  Staff (July 27, 2017). “Milky Way's origins are not what they seem”. Archived from the original on July 27, 2017. Retrieved July 27, 2017.
[8]  Yin, J.; Hou, J.L; Prantzos, N.; Boissier, S.; et al. (2009). “Milky Way versus Andromeda: a tale of two disks”. Astronomy and Astrophysics. 505 (2): 497-508.
[9]  Gillessen, Stefan; Plewa, Philipp; Eisenhauer, Frank; Sari, Re'em; Waisberg, Idel; Habibi, Maryam; Pfuhl, Oliver; George, Elizabeth; Dexter, Jason; von Fellenberg, Sebastiano; Ott, Thomas; Genzel, Reinhard (November 28, 2016). “An Update on Monitoring Stellar Orbits in the Galactic Center”. The Astrophysical Journal. 837 (1): 30.
[10]  Croswell, Ken (March 23, 2020). “Astronomers have found the edge of the Milky Way at last”. ScienceNews. Archived from the original on March 24, 2020. Retrieved March 27, 2020.
[11]  Taylor, J.H., “Binary Pulsars and Relativistic Gravity”, Rev. Mod. Phys., 66, 711-719, (1994).
[12]  Shappee, Benjamin; Stanek, Kris (June 2011). “A New Cepheid Distance to the Giant Spiral M101 Based on Image Subtraction of Hubble Space Telescope/Advanced Camera for Surveys Observations”. Astrophysical Journal. 733 (2): 124.
[13]  Armando, Gil de Paz; Boissier; Madore; Seibert; et al. (2007). “The GALEX Ultraviolet Atlas of Nearby Galaxies”. Astrophysical Journal Supplement. 173 (2): 185-255.
[14]  Francis, Matthew (22 March 2013). “First Planck results: the Universe is still weird and interesting”. Ars Technica.
[15]  Kuijken, K.; Gilmore, G. (July 1989). “The Mass Distribution in the Galactic Disc - Part III - the Local Volume Mass Density” (PDF). Monthly Notices of the Royal Astronomical Society. 239 (2): 651-664.
[16]  Babcock, Horace W. (1939). “The rotation of the Andromeda Nebula”. Lick Observatory Bulletin. 19: 41-51.
[17]  Stonebraker, Alan (3 January 2014). “Synopsis: Dark-Matter Wind Sways through the Seasons”. Physics - Synopses. American Physical Society.