When it comes to physics and astrophysics, understanding dark matter has proven to be a challenge, but scientists at the Max Planck Institute for Radio Astronomy suggest that studying super-dense stars may be one key to figuring out how dark matter interacts with ordinary matter.
As far as the measurement of matter contained in our universe, scientists believe that 80 percent of it is dark matter. In the past, our knowledge of dark matter has come strictly through carefully examining things like the rotation of galaxies, gravitational lenses and observing galaxy clusters, as Phys.org report. It is highly likely, according to physicists, that sub-atomic particles that have not yet been discovered may make up this dark matter.
Physicists also question whether there is a fifth force at play that may be working alongside dark matter besides electromagnetic and weak interaction, strong interaction and gravity. Because of this, up until recently nobody has worked to test the idea of a fifth force in conjunction with an object like a neutron star, as Max Planck's Lijing Shao explained.
"There are two reasons that binary pulsars open up a completely new way of testing for such a fifth force between normal matter and dark matter. First, a neutron star consists of matter which cannot be constructed in a laboratory, many times denser than an atomic nucleus and consisting nearly entirely of neutrons. Moreover, the enormous gravitational fields inside a neutron star, billion times stronger than that of the Sun, could in principle greatly enhance the interaction with dark matter."