Dokar Hubble, wacce aka fi sani da ka'idar Hubble, tana nufin lura da cewa mafi nisa na tauraron dan adam daga duniya, saurin tafiyarsa daga gare mu, kuma wannan saurin koma bayan tattalin arziki yana daidai da nisa. Dokar Hubble wani sakamako ne na asali a cikin nazarin sararin samaniya kuma yana ba da shaida don faɗaɗa sararin samaniya.A cikin sharuddan lissafi, ana bayyana dokar Hubble a matsayin v = H0d, inda v shine saurin koma bayan tattalin arziki na a duniya. galaxy, d ita ce tazarar sa daga duniya, H0 ita ce ma'aunin Hubble, wanda shine ma'auni na girman fadada sararin duniya a halin yanzu. Dokar Hubble ta nuna cewa sararin samaniya yana fadadawa, kuma taurari suna nisa daga juna yayin da sararin duniya ke fadadawa. duban taurari masu nisa. Tun daga lokacin da binciken bincike da yawa ya tabbatar da shi kuma ana ɗaukarsa ɗaya daga cikin mahimman bayanai na ka'idar Big Bang, wanda shine jagorar bayanin kimiyya game da asali da juyin halitta. Dokar Hubble ta yi tasiri sosai a kan fahimtarmu game da sararin samaniya kuma ta haifar da ci gaban fannin nazarin sararin samaniya.