Aside from dark matter and the dark energy that comprised the universe, there remained to be 5 percent of what was called the 'ordinary matter.' About two-thirds of this ordinary matter was left unaccounted for until now.
Space June 21, 2018
Two groups of scientists have found the missing baryons in hot filaments of gas that link galaxies together. Here's how they found these by taking advantage of the Sunyaev-Zel'dovich effect.
Space October 11, 2017
CERN scientists discovered five subatomic particles, which were excited states of Omega-c-zero, a baryon particle comprising two quarks and a charm quark. The excited states were carrying more energy than the standard particle of Omega-c-zero.
Energy March 28, 2017