Fermilab and CERN etc have seen the tiniest particles and they are called Neutrinos. The Muon neutrino is a fixed size black ball and no heat...it doe not emit or absorb energy but it is attractive to the Electron neutrino which is white and HOT...... and together are Gluons.
All matter is composed of black and white particles. In ZERO Gravity the Black part can separate into a "Clump of Darkness". This was actually done in 2015 and not understood even to this very day.
In 2015 a black hole was formed in space and filled with Bose Einstein Condensate...BEC.