In astrophysics, Dark matter refers to undetectable mater or particles whose presence explains unexpected gravitational effects on galaxies and stars. Various assumptions were made on the composition of dark matter molecular gas, dead stars, Brown dwarf stars, Black holes, etc. According to galaxies formaton and evolution models as well as cosmological models, dark matter would represent approximately 30% of the total mass of the universe. Dark matter refers to non-luminous matter particles whose presence is suggested because of the gravitational effects on the rotation rate of visible matter such galaxies and the presence of clusters of galaxies.
In
No comments:
Post a Comment