Then you measure angular extent of cluster in the sky, and
Waxaa laga yaabaa in dadka qaar aysan la socon in Abwaan Cismaan C/laahi Guure uu ahaa ninki lahaa fikradda iskaa wax uqabsada cusub ama “is xilqaan” oo ah ololaha ugu weyn ee ay dowladda maanta jirtaa ku dhistay qaar kamid ah xarumahi burburay ee dowladda.