<Tr> <Td> strange </Td> <Td> s </Td> <Td> ​ ⁄ </Td> <Td> − ​ ⁄ </Td> <Td> 70 to 130 </Td> <Td> ~ 200 electrons </Td> <Td> antistrange </Td> <Td> s </Td> </Tr> <Tr> <Td> bottom </Td> <Td> </Td> <Td> ​ ⁄ </Td> <Td> − ​ ⁄ </Td> <Td> 4130 to 4370 </Td> <Td> ~ 5 protons </Td> <Td> antibottom </Td> <Td> </Td> </Tr> <P> Baryons are strongly interacting fermions, and so are subject to Fermi--Dirac statistics . Amongst the baryons are the protons and neutrons, which occur in atomic nuclei, but many other unstable baryons exist as well . The term baryon usually refers to triquarks--particles made of three quarks . "Exotic" baryons made of four quarks and one antiquark are known as the pentaquarks, but their existence is not generally accepted . </P> <P> Baryonic matter is the part of the universe that is made of baryons (including all atoms). This part of the universe does not include dark energy, dark matter, black holes or various forms of degenerate matter, such as compose white dwarf stars and neutron stars . Microwave light seen by Wilkinson Microwave Anisotropy Probe (WMAP), suggests that only about 4.6% of that part of the universe within range of the best telescopes (that is, matter that may be visible because light could reach us from it), is made of baryonic matter . About 26.8% is dark matter, and about 68.3% is dark energy . </P>

Matter is usually found in which of the following states