Dark matter may be older than the big bang, new study suggests

Mathematical model suggests dark matter may have been produced before the big bang during cosmic inflation, when space was expanding rapidly


Researchers believe dark matter makes up about 80% of the universe’s mass, but its origins and composition remain among the most elusive mysteries in modern physics. A new Johns Hopkins University study suggests dark matter may have existed before the big bang. The study, published in Physical Review Letters, presents a new idea of how dark matter was created and how it might be identified during astronomical observations.


"The study revealed a new connection between particle physics and astronomy," says Tommi Tenkanen, a postdoctoral fellow in JHU’sDepartment of Physics and Astronomy and the study’s author. "If dark matter consists of new particles that were born before the big bang, they affect the way galaxies are distributed in the sky in a unique way. This connection may be used to reveal their identity and make conclusions about the times before the big bang, too."



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