Theoretical estimates of the number of quark stars in the universe and the estimates of the amount of dark matter are not directly correlated. Quark stars and dark matter are distinct concepts within astrophysics.
Quark stars are hypothetical objects composed primarily of quarks, which are elementary particles that make up protons and neutrons. They are theorized to form under extreme conditions of density and pressure, potentially arising from the collapse of massive stars. Quark stars are not yet conclusively observed or confirmed, and their existence remains a topic of ongoing research and debate in astrophysics.
Dark matter, on the other hand, is a theoretical form of matter that does not interact with light or other electromagnetic radiation, making it invisible and difficult to detect directly. Its existence is inferred from its gravitational effects on visible matter and the structure of the universe. Dark matter is thought to make up a significant portion of the total mass in the universe, providing the gravitational glue that holds galaxies and galaxy clusters together.
While both quark stars and dark matter are subjects of scientific investigation, they are distinct concepts with different properties and origins. Quark stars are speculated to be a type of compact object composed of dense quark matter, while dark matter is thought to be a more pervasive component of the universe that does not consist of ordinary matter particles.
It's important to note that our understanding of both quark stars and dark matter is still evolving, and further research and observations are necessary to provide more definitive answers regarding their existence, properties, and potential connections to each other.