<prompt> Ramba uchiverenga ndima iyi - Kuwanikwa kwemasikirwo emapoka enyeredzi akasiyana nemamwe mapoka enyeredzi interstellar clouds kwakaitwa muma1920  <response>: . Kuedza kwokutanga kunyorwa kwemapoka enyeredzi kwakagadzirwa muma1960, neCatalogue of Galaxies and Clusters of Galaxies inonyora mapoka enyeredzi 29 418 nemapoka enyeredzi, uye neMorphological Catalogue of Galaxies, runyorwa rwakazara rwemapoka enyeredzi ane hukuru hwemifananidzo hunopfuura 15, inonyora 30 642. Mumakore okuma1980, Lyons Groups of Galaxies yakaratidza mapoka enyeredzi 485 aiva nemapoka enyeredzi 3.933. Galaxy Zoo ibasa rinovavarira runyoro rwakakwana zvikuru: rakatangwa muna July 2007, rakaronga mifananidzo yemagakaxi inopfuura miriyoni imwe kubva kuThe Sloan Digital Sky Survey, The Hubble Space Telescope uye Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey. 