Free Astronomy Magazine January-February 2026 ARABIC VERSION

JANUARY-FEBRUARY2026       hedarkmatterobjectasseenbytheteam’smas- sive telescope. [NSF/AUI/NSF NRAO/B. Saxton] The lowest mass dark object in the distant Universe byNRAO ninternationalresearchteam, using a worldwide network ofradiotelescopes,including the U.S. National Science Founda- tion National Radio Astronomy Ob- servatory(NSFNRAO)U.S.National ScienceFoundationVeryLongBase- line Array (NSF VLBA) and U.S. Na- tional Science Foundation Green BankTelescope(NSFGBT),hasde- tected an enigmatic dark object withamassaboutonemilliontimes that of our Sun without observing anyemittedlight.Thisisthelowest mass dark object ever detected at a cosmologicaldistanceusingonlyits gravitational influence, marking a majormilestoneinthequesttoun- ravel the nature of dark matter. Thediscoveryleveragesatechnique known as very long baseline inter- ferometry (VLBI) to form a global, Earth-sizedtelescopethatcaptures extremely sharp images of cosmic phenomena. The team observed a distantgalaxysystem,JVASB1938 +666, where the light of a back- ground galaxy is gravitationally lensedbyaforegroundgalaxy,pro- ducingbeautifularcsandmultiple T ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌ ﺮ ﺔ 12 اﻛﺘﺸﺎفأﺧﻒﺟﺮمﻣﻈﻠﻢ ﻓﻲاﻟ ﻮن اﻟ ﻌ ﺪ : ﻘﻠﻢ ﻟﻌﻠﻢ اﻟﻔﻠﻚ اﻟﺮادﻳﻮي اﻟﻤﺮﺻﺪ اﻟﻮﻃ اﻟـﺠﺮم اﻟﻤﻈﻠﻢ ﻤـﺎ رﺻـﺪ ﺑﻮاﺳـﻄﺔ اﻟﺘﻠﺴـ ﻮب اﻟﻀـ ﻢ ﻟﻠﻔﺮﻖ . [NSF/AUI/NSF NRAO/B. Saxton] اﺳــﺘﻄﺎع ﻓﺮﻳــﻖ ﺑﺤــﺚ دوﱄ ﺑﺎﺳــﺘﺨﺪام ﺷﺒﻜﺔ ﻋﺎ ﻴﺔ ﻣﻦ اﻟﺘ ﻠﺴﻜﻮﺑﺎت اﻟﺮادﻳﻮﻳﺔ ﺑﻤﺎ ﰲ ذﻟﻚ ا ﺮﺻـﺪ اﻟـﻮﻃﻨﻲ ﻟﻠﺮﺻـﺪ اﻟﺮادﻳـﻮي اﻟﻔﻠﻜﻲ اﻟﺘـﺎﺑﻊ ﺆﺳﺴـﺔ اﻟﻌﻠـﻮم اﻟﻮﻃﻨﻴـﺔ اﻷﻣﺮﻳﻜﻴﺔ وﻣﺼﻔ ﻮﻓﺔ اﻟﻘﺎﻋﺪة اﻟﻄﻮﻳﻠﺔ ﺟﺪ اُ وﺗﻠﺴﻜﻮب ﻏﺮﻳﻦ ﺑﺎﻧـﻚ ﻣـﻦ ﻛﺸـﻒ ﺟـﺮم ﻣﻈﻠﻢ ﻏﺎﻣﺾ ﺗﺒﻠﻎ ﻛﺘﻠﺘﻪ ﻧﺤﻮ ﻣﻠﻴﻮن ﻣـﺮة ﻛﺘﻠﺔ اﻟﺸﻤﺲ دون رﺻـﺪ أي ﺿـﻮء ﺻـﺎدر . ﻋﻨﻪ وﻳُﻌﺪ ﻫﺬا أﺧﻒ ﺟﺴﻢ ﻣﻈﻠﻢ ﻳُﻜﺘﺸـﻒ ﻋﻨﻪ وﻳﻌﺪ ﻫﺬا أﺧﻒ ﺟﺴﻢ ﻣﻈﻠـﻢ ﻳ ﻜﺘﺸـﻒ ﻋــﲆ ﻣﺴـﺎﻓﺔ ﻛﻮ ﻧﻴ ـ ﺔ ﺑﺎﺳـﺘﺨﺪام ﺗ ـﺄﺛ ه اﻟﺠ ﺬﺑﻲ ﻓﻘﻂ وﻫﻮ إﻧﺠﺎز ﻣﻬـﻢ ﰲ ﻣﺴـﻌﻰ ﻓﻬﻢ ﻃﺒﻴﻌﺔ ا ﺎدة ا ﻈﻠﻤﺔ . ﻳﻌﺘﻤﺪ اﻻﻛﺘﺸﺎف ﻋﲆ ﺗﻘﻨﻴﺔ ﺗُﻌﺮف ﺑﺎﺳﻢ اﻟﺘـﺪ اﺧﻞ ﺑـﺎﻟﺮادﻳﻮ ﻃﻮﻳﻞ اﻟﻘﺎﻋﺪة ﺟﺪ اً واﻟﺘﻲ ﺗﺤﻮ ل ﻣﺠﻤﻮﻋـﺔ ﻣﻦ اﻟﺘﻠﺴﻜﻮﺑﺎت إﱃ ﺗﻠﺴﻜﻮب ﻋﺎ ﻲ ﺑﺤﺠـﻢ اﻷرض ﻗـﺎدر ﻋـﲆ اﻟﺘﻘــﺎط ﺻـﻮر ﻓﺎﺋﻘـﺔ اﻟﻮﺿﻮح ﻟﻠﻈﻮاﻫﺮ اﻟﻜﻮﻧﻴﺔ . وراﻗﺐ اﻟﻔﺮﻳـﻖ ﻧﻈﺎم ا ﺠﺮة اﻟﺒﻌﻴـﺪة JVAS B1938+666 ، اﻟﻮﺿﻮح ﻟﻠﻈﻮاﻫﺮ اﻟﻜﻮﻧﻴﺔ . وراﻗﺐ اﻟﻔﺮﻳـﻖ ﻧﻈﺎم ا ﺠﺮة اﻟﺒﻌﻴـﺪة JVAS B1938+666 ﻴﺚ ﻳ ﺣ ﺜﻨﻰ ﺿﻮء ﻣﺠـﺮة ﺧﻠﻔﻴـﺔ ﺑﻮاﺳـﻄﺔ اﻟﺠﺎذﺑﻴﺔ اﻟﻨﺎﺗﺠﺔ ﻋﻦ ﻣﺠـﺮة أﻣﺎﻣﻴـﺔ ﻣﻤـﺎ ﻳﺆدي إﱃ ﺗﺸـﻜﻞ أﻗـﻮاس وﺻـﻮر ﻣﺘﻌـﺪدة ﻣﺬﻫﻠﺔ ﻣﻈﻬﺮ اً اﻟﻘﻮة ا ﻟﻬﺎﺋﻠﺔ ﻟﺘﺄﺛ اﻟﺠﺎذﺑﻴﺔ ﺗﻤو ﰲ اﻟﻜﻮن ﻜﻦ اﻟﻌﻠﻤﺎء ﻣﻦ دراﺳﺔ ﺗﻮزﻳﻊ ا ﺎدة ا ﻈﻠﻤﺔ ﺑﺪﻗﺔ ﻋﺎﻟﻴﺔ ﻟﻠﻐﺎﻳﺔ . - ﻳﻨﺎﻳﺮ ﺒﺮﺍﻳﺮ ﻓ 2 0 2 6