Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Henrietta Swan Leavitt (; Yuli 4, 1868 <unk> Disamba 12, 1921) wani masanin taurari ne na Amurka. Ta kammala karatu a Kwalejin Radcliffe, ta yi aiki a Harvard College Observatory a matsayin "kwamfuta", wanda aka ba shi aikin bincika faranti na hoto don auna da kuma tsara hasken taurari. Wannan aikin ya sa ta gano alaƙar da ke tsakanin haske da lokacin masu canjin Cepheid. Abin da Leavitt ya gano ya ba 'yan taurari "kyandir na yau da kullum" na farko da za su yi amfani da shi wajen auna nisan taurari masu nisa. Bayan mutuwarta, Edwin Hubble ya yi amfani da dangantakar lokacin haske na Leavitt, tare da sauye-sauyen galactic spectral da Vesto Slipher ya fara aunawa a Lowell Observatory, don tabbatar da cewa sararin samaniya yana fadada (duba dokar Hubble).  Tambaya: Menene aikinsa?
masanin taurari