Free Astronomy Magazine November-December 2025 ARABIC VERSION

A An exceptional Einstein cross reveals hidden dark matter by NOIRLab Josie Fenske n international team of as- tronomers,includingre- searchersfromALMA,has discoveredaspectacularEinstein Crossinthedistantuniversethatre- veals the hidden presence of dark matter.Observationsuseddatafrom theAtacamaLargeMillimeter/sub- millimeter Array (ALMA) in Chile, theNorthernExtendedMillimeter NOVEMBER-DECEMBER2025 اﻛﺘﺸـﻒ ﻓﺮﻳﻖ دوﱄ ﻣـﻦ ﻋﻠﻤـﺎء اﻟﻔﻠـﻚ ﻣـﻦ ﺑﻴﻨﻬﻢ ﺑﺎﺣﺜﻮن ﻣﻦ ﻣﺮﺻﺪ أ ﺎ ﻇﺎﻫﺮة ﻧﺎدرة ﰲ اﻟﻜﻮن ﺗﻌﺮف ﺑﺎﺳﻢ ) ﺻﻠﻴﺐ أﻳﻨﺸﺘﺎﻳﻦ ( واﻟﺘﻲ ﺗ ﻜﺸﻒ ﻋﻦ وﺟـﻮد ا ـﺎدة ا ﻈﻠﻤـﺔ اﻟﺨﻔﻴـﺔ . اﺳﺘﺨﺪﻣﺖ أرﺻـﺎد ﺑﻴﺎﻧـﺎت ﻣـﻦ ﻣﺼـﻔﻮﻓﺔ اﺳﺘﺨﺪﻣﺖ أرﺻﺎد ﻣﺘﻌﺪدة ﺗﻌﺘﻤﺪ ﻋﲆ ﺑﻴﺎﻧﺎت ﻣـﻦ ﻣﺼـﻔﻮﻓﺔ أﺗﺎﻛﺎﻣـﺎ ا ﻠﻴﻤﱰﻳـﺔ اﻟﻜﺒـ ة وﺗﺤﺖ ا ﻠﻴﻤﱰﻳﺔ أ ﺎ) ﰲ ﺗﺸﻴﲇ وﻣﺼـﻔﻮﻓﺔ ا ﻠ ﻴﻤﱰ اﻟﺸﻤﺎﱄ ا ﻤﺘﺪ ) NOEMA ( ﰲ ﻓﺮﻧﺴـﺎ ـــــــــــــــــــــــــــــــــــــ : ﻘﻠﻢ ﺟﻮزيﻓ ﻨﺴﻜﻲ ﻣﺨﺘ ﻧﻮﻳﺮ ﻻب ﺻﻠ ﺐ أ ﻨﺸﺘﺎﻳﻦ ﻧﺎدر ﻜﺸﻒ ﻋﻦ اﻟﻤﺎدة اﻟﻤﻈﻠﻤﺔ اﻟﻤﺨ ﻔ ﺔ ﺘ اﻟـﺨﺼﺎﺋﺺ ـﻞ واﺣـﺪة ﻣـﻦ اﻟﺼـﻮر اﻟﺘﻔﺼـ ﻠ ﺔ ﻟ اﻟــــ ﻤﺲ ﻟﺼـــ ﻠ ﺐ ا ﻨﺸـــﺘﺎﻳﻦ ﺑﻮاﺳـــﻄﺔ ﻣﺮﺻـــﺪ أﻟﻤـــﺎ ﺗﻮﺿﺢ اﺧﺘﻼف ﺗﻮز ﻊ اﻟﻤﺎدة واﻟﻤﺠﺎل اﻟ ـ . ﺠﺎذﺑﻲ [P.Cox et al. – ALMA (ESO/NAOJ/NRAO)] ﻧﻮﻓﻤﺒﺮ - ﺩﻳﺴﻤﺒﺮ 2 0 2 5 ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ 12