Ammas n umazellaw

Ammas n umazellaw d ammas n tuzzya n umazellaw n uɣaras n walim ɣef yiman-is, yaggug s wazal n 27,000±1,000 yifawatayen ɣef tegnitMajaess D. J., Turner D. G., Lane D. J. (2009). Characteristics of the Galaxy according to Cepheids, MNRAS  deg tnila n tezdemt n uneccab d Ophiuchus d tkureẓma deg wadeg yettfeǧǧijen yakk s waṭas deg umazellaw. Akken i ttɣilen imusnawen d akken yella dinna wemruj aberkan abarar deg wammas n umazellaw.

 Asentem n tilin n wammas amazallaw d wuggug-is 
S usrag n tilin n ugedṛuṛ agratraw ɣef teɣzi n uzlem n yiẓṛi, d ayen yettaǧǧan tazrawt d wannay n wammas n umazellaw d ayen imrayen (iweɛṛen) s uzenzar imeẓri neɣ s unegjenjaṛ neɣ s uzenzar n X. Isalan i d-kksen imusnawen seg wannay n uzenzar n gamma d X d tid yeflalen s tfasa yakk d wannay n azenzar aderzeggaɣ ilan teɣzi n tayyugt ɣezzifen

Deg useggas n 1918, Harlow Shapley yukez-d imsidgenn wammas n umazellaw i tikkelt tamezwarut ass mi yella izerrew asedger n iguza itrawen, dɣa yukez-iten-d akka: Aluy aɣɣad 17h45m40.04s, mil -29° 00' 28.1".

 Amruj aberkan abarar 

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