Free Astronomy Magazine July-August 2026 ARABIC VERSION

Nature Astronomy ,show that it is the most massivestarclustersthat clearawaytheirgaseous shroud the fastest, and begin lighting their galaxy the earliest. The team identified nearly9,000starclusters in the four galaxies in different evolutionary stages: young clusters just starting to emerge from their natal clouds ofgas,clustersthathad partially dispersed the gas (both from Webb images),andfullyunob- structedclustersvisible inopticallight(foundin Hubble images). With Webb’s ability to peer inside the gas clouds, they were able to then estimate the mass and ageofeachclusterfrom its light spectrum. The most massive clusters had fully emerged and dispersed the clouds of gas after around five millionyears,whileless massive clusters were between seven and eight million years old when they emerged from their nurseries. JULY-AUGUST2026 ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ ﺗُﺰﻳﻞ ﻏﻼﻓﻬﺎ اﻟﻐـﺎزي ﺑﺸـﻜﻞ أﴎع وﺗﺒﺪأ ﺑﺈﺿﺎءة ﻣﺠﺮّاﺗﻬﺎ ﰲ وﻗﺖ أﺑﻜﺮ . ﻟ ﻘﺪ ﺣﺪ د اﻟﻔﺮﻳﻖ ﻣـﺎ ﻳﻘـﺎرب 9000 ﻋﻨﻘـــﻮد ﻧﺠﻤـــﻲ ﰲ ا ﺠ ـﺮات اﻷرﺑــﻊ ﰲ ﻣﺮاﺣ ـﻞ ﺗﻄﻮرﻳ ـﺔ ﻣﺨﺘﻠﻔ ـﺔ : ﻋﻨﺎﻗﻴ ـﺪ ﻓﺘﻴﺔ ﺑﺪأ ت ﻟ ﻠﺘﻮ ﺑﺎﻟﺨﺮوج ﻣﻦ ﺳــﺤﺒﻬﺎ اﻟﻐﺎزﻳــﺔ وﻋﻨﺎﻗﻴــﺪ أزاﺣــﺖ ﺟــﺰء اً ﻣــﻦ اﻟﻐــﺎز ) ﻛﻼﻫﻤﺎ ﻣﻦ ﺻﻮر ﺗﻠﺴـﻜﻮب ( وﻳ ـﺐ وﻋﻨﺎﻗﻴ ـﺪ ﻣﻜﺸ ـﻮﻓﺔ ﺑﺎﻟﻜﺎﻣــﻞ ﺗُــﺮى ﰲ اﻟﻀــﻮء اﻟﺒﴫي ) ﺗﻢ رﺻﺪﻫﺎ ﺑﻮاﺳﻄﺔ ﺗﻠﺴﻜﻮب (. ﻫﺎﺑﻞ وﺑﺎﺳﺘﺨﺪام ﻗـﺪرة ﺗﻠﺴـﻜﻮب وﻳ ـﺐ ﻋ ـﲆ اﻟﺘﻐﻠﻐ ـﻞ داﺧ ـﻞ اﻟﺴــﺤﺐ اﻟﻐﺎزﻳــﺔ ﺗﻤﻜــﻦ اﻟﻌﻠﻤﺎء ﻣﻦ ﺗﻘﺪﻳﺮ ﻛﺘﻠﺔ وﻋﻤﺮ ﻛﻞ ﻋﻨﻘ ﻮد اﻋﺘﻤﺎدًا ﻋﲆ ﻃﻴﻒ ﺿﻮﺋﻪ وﻗﺪ ﺗﺒ أن اﻟﻌﻨﺎﻗﻴـﺪ اﻷﻛﺜــﺮ ﺿــﺨﺎﻣﺔ ﺗﻜﺸــﻔﺖ ﺑﺎﻟﻜﺎﻣــﻞ وﺑــﺪدت ﺳــﺤﺒﻬﺎ اﻟﻐﺎزﻳـﺔ ﺑﻌـﺪ ﻧﺤـﻮ ﺧﻤﺴـﺔ ﻣﻼﻳـ ﺳـﻨﺔ ﺑﻴﻨﻤـﺎ ﻛﺎﻧ ـﺖ اﻟﻌﻨﺎﻗﻴﺪ اﻷﻗﻞ ﻛﺘﻠـﺔ ﺗـﱰاوح أﻋﻤﺎرﻫﺎ ﺑ ﺳﺒﻌﺔ وﺛﻤﺎﻧﻴـﺔ ﻣﻼﻳ ﺳﻨﺔ ﻋﻨـﺪﻣﺎ ﺧﺮﺟـﺖ ﻣﻦ ﺑﻴﺌﺎﺗﻬﺎ اﻟﻮﻻدﻳﺔ . إ ن اﻹﺟﺎﺑﺔ ﻋﻦ ﻫـﺬا اﻟﺴـﺆال ا ﻔﺘﻮح أي اﻟﻌﻨﺎﻗﻴﺪ اﻟﻨﺠﻤﻴـﺔ ﺗُﺰﻳﻞ ﺳﺤﺐ وﻻدﺗﻬﺎ ﺑ ـ ﴪﻋﺔ أﻛﱪ — ﺗُﻌـﺪ ﺗﻘـﺪﻣًﺎ ﻣﻬﻤًـﺎ ﰲ ﻓﻬﻤﻨﺎ ﻟﺘﻜﻮّن ا ﺠـﺮات . وﻗـﺪ ﺗﻈﻬــــــــــــﺮ ﻫــــــــــــﺬﻩ اﻟﺼـــــــــــــﻮرة اﻟﻤﺠــــﺮات دُرﺳــــﺖ اﻷرــــﻊ اﻟــــ ﻓــﻲﻫــﺬا اﻟﺒﺤــﺚ ﺳــﺒﻖ واﻟــ ــــﻞ ﻣﻨﻬــــﺎ ﻣﻮﺿــــﻮﻋًﺎ أن ﺎﻧــــﺖ ﻟﺼـــــــﻮرة اﻟﺸـــــــﻬﺮﻣـــــــﻦ و ﺎﻟـــــــﺔ ــــﺔ اﻟﻔﻀــــﺎء اﻷوروﺑ / ﺗﻠﺴــــ ﻮب ـــﺐ اﻟﻔﻀــــﺎﺋﻲ و : ﻣـــﻦ اﻷﻋﻠــــﻰ ﻣ ﺴـــــــــــــــــﻴ ﮫ 51 - 4449 NGC ﻣ ﺴﻴ ﮫ 83 - NGC 62 . [ESA/Webb, NASA & CSA, A. Pedrini, A. Adamo (Stockholm University) and the - ﻳﻮﻟﻴﻮ ﺃﻏﺴﻄﺲ 2 0 2 6 38