Free Astronomy Magazine May-June 2026 ARABIC VERSION

MAY-JUNE2026      A dead star creating a shock wave byESO BárbaraFerreira asanddustflowingfromstars can, under the right condi- tions,clashwithastar’ssur- roundingsandcreateashockwave. Now, astronomers using the Euro- pean Southern Observatory’s Very LargeTelescope(ESO’sVLT)haveim- agedabeautifulshockwavearound a dead star — a discovery that has left them puzzled. According to all knownmechanisms,thesmall,dead starRXJ0528+2838shouldnothave suchstructurearoundit.Thisdiscov- ery,asenigmaticasit’sstunning, challenges our understanding of how dead stars interact with their surroundings. “Wefoundsomething neverseenbeforeand,moreimpor- tantly,entirelyunexpected,” saysSi- moneScaringi,associateprofessorat DurhamUniversity,UKandco-lead ﻧ ﻢﻣ ﺖ ﻳُﻮﻟﺪ ﻣﻮﺟﺔﺻﺪﻣ ﺔ : ﻘﻠﻢ ﺟﻮزي ﻓ ﺴﻜﻲ ﻣﺨﺘ ﻧﻮﻳﺮﻻب ﻌﺘﻘـﺪ أن ا ﻟ ﻐﺎز واﻟﻐﺒﺎر ا ﺘﺪﻓﻘ ﻣﻦ اﻟﻨﺠﻮم ﻳﻤ ﻜ ـﻦ ﻟﻬﻤ ـﺎ ﰲ ﻇ ـﻞ ﻇ ـﺮوف ﻣﻨﺎﺳــﺒﺔ أن ﻳﺼﻄﺪﻣﺎ ﺑﺎﻟﻮﺳﻂ ا ﺤـﻴﻂ ﺑـﺎﻟﻨﺠﻢ وﻳُﻨﺸـﺌﺎ ﻣﻮﺟﺔ ﺻـﺪﻣﻴﺔ وﻗـﺪ ﺗﻤﻜّـﻦ ﻋﻠﻤـﺎء اﻟﻔﻠـﻚ ﺑﺎﺳـﺘﺨﺪام اﻟﺘﻠﺴـﻜﻮب اﻟﻜﺒـ ﺟـﺪ اً اﻟﺘـﺎﺑﻊ ﻟﻠﻤﺮﺻﺪ اﻷوروﺑﻲ اﻟﺠﻨﻮﺑﻲ ﻣﻦ ﺗﺼﻮﻳﺮ ﻣﻮﺟﺔ ﺻﺪﻣﻴﺔ ﻣﺪﻫﺸﺔ ﺗﺤﻴﻂ ﺑﻨﺠﻢ ﻣﻴﺖ — وﻫـﻮ ﺻﺪﻣﻴﺔ ﻣﺪﻫﺸﺔ ﺗﺤـﻴﻂ ﺑـﻨﺠﻢ ﻣﻴـﺖ وﻫـﻮ اﻛﺘﺸﺎف أﺛﺎر ﺣ ﺗﻬﻢ . ﺎً ﻓﻮﻓﻘ ﻟﺠﻤﻴﻊ ا ﻵﻟﻴﺎت ا ﻌﺮوﻓﺔ ﻟﻴﺲ ﻣﻦ ا ﻤﻜﻦ ﻟﻠﻨﺠﻢ اﻟﺼﻐ ا ﻴﺖ RXJ0528+2838 أن ﻳﻤ ﺘﻠ ــﻚ ﻣﺜـــﻞ ﻫــﺬا اﻟﱰﻛﻴﺐ ﻣﻦ ﺣﻮﻟﻪ وﻳﻌﺪ ﻫﺬا اﻻﻛﺘﺸﺎف ﺑﻘﺪر ﻣﺎ ﻫﻮ ﻣﺬﻫﻞ ﺑﴫﻳﺎً اً ﻣﺤّ ﺎً ﻋﻠﻤﻴ إذ ﻳﺘﺤـﺪى ﻓﻬﻤﻨﺎ ﻟﻜﻴﻔﻴـﺔ ﺗﻔﺎﻋـﻞ اﻟﻨﺠـﻮم ا ﻴﺘـﺔ ﻣـﻊ ﻓﻬﻤﻨﺎ ﻟﻜﻴﻔﻴـﺔ ﺗﻔﺎﻋـﻞ اﻟﻨﺠـﻮم ا ﻴﺘـﺔ ﻣـﻊ ﺑﻴﺌﺎﺗ ﻬﺎ ا ﺤﻴﻄﺔ . ﻳﻘﻮل ﺳﻴﻤﻮن ﺳـﻜﺎرﻳﻨﻐﻲ اﻷﺳﺘﺎذ ا ﺸﺎرك ﰲ ﺟﺎﻣﻌﺔ دورﻫﺎم ﺑﺎ ﻤﻠﻜـﺔ ا ﺘﺤﺪة وأﺣﺪ اﻟﻘـﺎدة ا ﺸـﺎرﻛ ﰲ ا ﻟﺪراﺳـﺔ ا ﻨﺸﻮرة ﰲ ﻣﺠﻠﺔ ﻧﻴﺘﴩ أﺳﱰوﻧﻮﻣﻲ ﻟﻘـﺪ »: وﺟﺪﻧﺎ ﺷﻴﺌﺎً ﻟﻢ ﻳﺸﺎﻫﺪ ﻣﻦ ﻗﺒﻞ واﻷﻫـﻢ ﻣـﻦ ذﻟـﻚ أﻧـﻪ ﻏـ ﻣﺘﻮﻗـﻊ ﺗﻤﺎﻣًـﺎ « . وﻳﻀـﻴﻒ - ﻣﺎﻳﻮ ﻳﻮﻧﻴﻮ 2 0 2 6 24 ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ