Henrietta Hill Swope
Henrietta Hill Swope (Oktoba 26,1902-Nuwamba 24,1980)[1] wani masanin falaki Ba'amurke ne wanda ya yi nazarin taurari masu canzawa.Musamman ma,ta auna dangantakar lokaci-haske ga taurarin Cepheid,waɗanda taurari ne masu canzawa waɗanda lokutan canjin yanayinsu ke da alaƙa kai tsaye da haskensu na zahiri.Don haka ana iya auna lokutansu da tazararsu kuma ana amfani da su don auna girman Milky Way da nisa zuwa sauran taurari.