Free Astronomy Magazine November-December 2026 ARABIC VERSION

A Trillion-mile stream feeding the triple-star system GW Orionis byALMAObservatory Nicolás Lira Jill Malusky BárbaraFerreira sing the Atacama Large Mil- limeter/submillimeter Array (ALMA),astronomershavemappedav aststreamerofgas feedingGWOrionis,ayoungtriple- starsystemsurroundedby threemisalignedringsofplanet- forming material. The observations provide the clearest evidence yet thatlateinfallfromasystem’s natalcloudcanhelptiltandre- shapeaprotoplanetarydisk. The streamer extends approxi- mately12,000astronomicalunits— about 0.2 light-years, or roughly one trillion miles—from the disk. By tracing its motion in carbon monoxide, the team found that the incoming gas meets the disk atitsoutermostdustringandcar-ries angular momentum closely aligned with that ring, while re- maining strongly misaligned with the innermost ring. rtist’s impression of a gas streamer feeding materialontotheprotoplanetarydiskaround GWOrionisandcontributingtoitsmisaligned dust rings. [NSF/AUI/NSF NRAO/B. Saxton] NOVEMBER-DECEMBER2026 U ﻧﻈﺎم ﺗ ﺎرﻏﺎزيﻫﺎﺋﻞ ﻐﺬ GW» أور ﻮﻧ ﺲ اﻟﺜﻼﺛﻲ « 22 ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ : ﻘﻠﻢ ﻧﻴ ﻮﻻس ﻟ ا ﺟﻴﻞ ﻣﺎﻟﻮﺳﻜﻲ ﺎر ﺮا ﻓ ﺮا ﻣﺮﺻﺪ ﻣﺼﻔﻮﻓﺔ أﻟﻤﺎ ﺎﺳــﺘﺨﺪام ﻣﺼــﻔﻮﻓﺔ أﺗﺎﻛﺎﻣــﺎ اﻟﻜﺒ ــ ة ا ﻠﻴﻤﱰﻳﺔ وﺗﺤﺖ ا ﻠﻴﻤﱰﻳﺔ ( أ ﺎ) رﺳﻢ ﻋﻠﻤﺎء اﻟﻔﻠﻚ ﺧﺮﻳﻄﺔ ﻟﺘﻴﺎر ﻫﺎﺋﻞ ﻣـﻦ اﻟﻐـﺎز ﻳﻐـﺬي GW أورﻳ ﻮﻧﻴﺲ وﻫﻮ ﻧﻈﺎم ﻧﺠﻤﻲ ﺛﻼﺛﻲ ﻓﺘﻲ ﺗﺤﻴﻂ ﺑﻪ ﺛﻼث ﺣﻠﻘـﺎت ﻣـﻦ ا ـﻮاد ا ﻜﻮﱢ ﻧـﺔ ﻟﻠﻜﻮاﻛﺐ، ﻣﺎﺋﻠﺔ ﺑﺰواﻳﺎ ﻣﺨﺘﻠﻔﺔ وﺗﻘﺪم ﻫـﺬه اﻷرﺻﺎد أوﺿﺢ دﻟﻴﻞ ﺣﺘﻰ اﻵن ﻋﲆ أن ﺗـﺪﻓﻖ ا ﺎدة ا ﺘﺄﺧﺮ ﻣﻦ اﻟﺴﺤﺎﺑﺔ اﻷﺻـﻠﻴﺔ ﻟﻠﻨﻈـﺎم ﻳﻤﻜﻦ أن ﻳﺴﻬﻢ ﰲ إﻣﺎﻟﺔ ﻗﺮص اﻟﻜﻮاﻛﺐ اﻷوﱄ وإﻋﺎدة ﺗﺸﻜﻴﻠﻪ . وﻳﻤﺘﺪ اﻟﺘﻴﺎر اﻟﻐﺎزي ﺴﺎﻓﺔ ـــــــــــــــــــــــــــــــــــــ رﺳـــﻢ ﺨ ﻠـــﻲ ﺗ اﻷوﻟـــﻲ اﻟﻤﺤـــ ﻂ ـــﻮﻛ اﻟﻘـــﺮص اﻟ ـــﺎرﻏـــﺎزي ﻐـــﺬ ﻟﺘ ــــﺎﻟﻨ ﻢ " GW أور ــــﻮﻧ ﺲ " ــــﺎﻟﻤﻮاد و ﺴــــﺎﻫﻢ ﻓــــﻲ ﺗﺸــــﻜﻴﻞ ﺣﻠﻘــــﺎت اﻟﻐ ﺎر ﻏ اﻟﻤ اﺻﻔﺔ ﻓ ﮫ . [NSF/AUI/NSF NRAO/B. Saxton] ﻧﻮﻓﻤ - ﺒﺮ ﺩﻳﺴﻤﺒﺮ 2 0 2 6 ﺗﻘﺎرب 12 أﻟﻒ وﺣﺪة ﻓﻠﻜﻴﺔ ﻣﻦ اﻟﻘـﺮص أي ﻧﺤﻮ 0.2 ﺳـﻨﺔ ﺿـﻮﺋﻴﺔ، أو ﻗﺮاﺑـﺔ ﺗﺮﻳﻠﻴـﻮن . ﻣﻴﻞ وﻣﻦ ﺧﻼل ﺗﺘﺒﻊ ﺣﺮﻛﺘـﻪ ﰲ أول أﻛﺴـﻴﺪ اﻟﻜﺮﺑﻮن، وﺟﺪ اﻟﻔﺮﻳﻖ أن اﻟﻐﺎز ا ﺘﺪﻓﻖ ﻳﻠﺘﻘﻲ ﺑﺎﻟ ﻘﺮص ﻋﻨـﺪ ﺣﻠﻘﺘـﻪ اﻟﻐﺒﺎرﻳـﺔ اﻟﺨﺎرﺟﻴـﺔ وﻳﺤﻤﻞ زﺧﻤ ﺎً ﺎً زاوﻳ ﻳﺘﻮاﻓﻖ ﺑﺪرﺟﺔ ﻛﺒ ة ﻣﻊ اﺗﺠﺎه ﻫﺬه اﻟﺤﻠﻘﺔ ﺑﻴﻨﻤﺎ ﻳﺨﺘﻠﻒ ﺑﺸـﺪة ﻋـﻦ اﻟﺤﻠﻘﺔ اﻟﺪاﺧﻠﻴﺔ . ﻳﻘﻊ GW أورﻳـﻮﻧﻴﺲ ﻋـﲆ ﺑﻌﺪ ﻧﺤﻮ 1300 ﺳﻨﺔ ﺿﻮﺋﻴﺔ ﰲ ﻛﻮﻛﺒﺔ اﻟﺠﺒﺎر وﺗﺤﻴﻂ ﺑﺎﻟﻨﺠﻮم اﻟﺜﻼﺛﺔ اﻟﻔﺘﻴﺔ ﰲ اﻟﻨﻈﺎم ﺑﻨﻴﺔ ـــــــــــــــــــــــــــــــــــــ