Teams of astrophysicists worldwide are trying to observe different possible types of dark matter (DM), hypothetical matter in the universe that does not emit, absorb or reflect light and would thus be very difficult to detect. Fermionic DM, however, which would be made of fermions, has so far been primarily explored theoretically.
Click here for original story, Recent searches for light fermionic dark matter by the PandaX-4T collaboration
Source: Phys.org