Free Astronomy Magazine September-October 2025 ARABIC VERSION

SEPTEMBER-OCTOBER2025 Webb refines the Bullet Cluster’s mass byNASA/ESA/CSA Claire Blome 5 Christine Pulliam ASA’sJamesWebbSpaceTele- scope recently zeroed in on theBulletCluster—deliver- inghighlydetailedimagesthat show a greater abundance of ex- tremely faint and distant galaxies thaneverbefore.UsingWebb’scrisp near-infraredobservationsofthis ﻳﺤﺪد " و ﺐ" ﻛﺘﻠﺔ ﻋﻨﻘﻮد اﻟﻄﻠﻘﺔ ﺪﻗﺔ أﻋﻠﻰ : ﻘﻠﻢ ﺑﻮﻟ ﺎم ﻠ ﻠﻮم ﻛﺮﺴﺘ و ﺎﻟﺔ ﻧ ﺎﺳﺎ و ﺎﻟﺔ اﻟﻔﻀﺎء اﻷوروﺑ ﺔ و ﺎﻟﺔ اﻟﻔﻀﺎء اﻟﻜﻨﺪ ﺔ اﺳـﺘﻬﺪف ﺗﻠﺴﻜ ﻮب ﺟﻴﻤﺲ وﻳﺐ اﻟﻔﻀﺎﺋﻲ اﻟﺘﺎﺑﻊ ﻟﻮﻛﺎﻟﺔ اﻟﻔﻀﺎء ﻧﺎﺳـﺎ ﻣـﺆﺧﺮاً ﻋﻨﻘـﻮد اﻟﺮﺻﺎﺻﺔ ﺣﻴﺚ ﻗﺪم ﺻﻮراً ﻣﻔﺼـﻠﺔ ﻟﻠﻐﺎﻳـﺔ ﺗﻈﻬـﺮ وﻓـﺮة أﻛـﱪ ﻣـﻦ ا ﺠـﺮات اﻟﺨﺎﻓﺘـﺔ واﻟﺒﻌﻴﺪة واﻟﺒﻌﻴﺪة ﻟﻠﻐﺎﻳﺔ أﻛﺜﺮ ﻣـﻦ أي وﻗـﺖ ﻣـ . ﴣـ وﺑﺎﺳﺘﺨﺪام أرﺻﺎد ﺟﻴﻤﺲ وﻳﺐ اﻟﻮاﺿﺤﺔ ﰲ اﻷﺷﻌﺔ ﺗﺤﺖ اﻟﺤﻤﺮاء اﻟﻘﺮﻳﺒﺔ ﻟ ﻬﺬه ا ﻨﻄﻘـﺔ ﺗﻤﻜﻦ اﻟﺒـﺎﺣﺜﻮن ﻣـﻦ رﺳـﻢ ﺧﺮﻳﻄـﺔ أﻛﺜـﺮ اﻛﺘﻤــﺎﻻً ﺤﺘﻮﻳــﺎت ﻣﺠﻤﻮﻋــﺎت ا ﺠــﺮات ا ﺘﺼﺎدﻣﺔ . ـــــ ﺳﺒﺘﻤﺒﺮ - ﺃﻛﺘﻮﺑﺮ 2 0 2 5