“We do not know what dark matter is, but if it has anything to do with any scalar particles, it may be older than the Big Bang,” says astrophysicist Tommi Tenkanen at the Johns Hopkins University, who was not part of a 2019 University of Tokyo study that proposed the axion as a candidate for dark matter. The only fundamental scalar quantum field that has been observed in nature is the Higgs field-a field of energy that is thought to exist in every region of the universe.
Planet-sized Particles to Highly-speculative Dark-Matter Life
Physicists have imagined new kinds of matter ranging from planet-sized particles to highly-speculative dark-matter life, consistent with the known laws of the universe,