Before examining the methods that have allowed us to conclude the existence of dark matter, let's first establish what we mean when we say 'dark matter'.
3 Loko hi nga si kambisisa vumbhoni bya leswaku hi hanya 'emakumu ya mafambiselo ya swilo,' a hi tweninyana hi ta nyimpi leyi ku nga riki na munhu loyi a a ta yi vona.