Free Astronomy Magazine March-April 2023 ARABIC VERSION

BI-MONTHLY MAGAZINE OF SCIENTIFIC AND TECHNICAL INFORMATION FREELY AVAILABLE THROUGH THE INTERNET March-April 2023 English edition of the magazine Stars are disappearing faster and faster Hydrogen masers reveal new secrets of a massive star The majesty of our Milky Way in unprecedented detail Black hole devours bypassing star A near-pristine star found to be binary l A ’ STROFILO Editor in chief Michele Ferrara Scientific advisor Prof. Enrico Maria Corsini Publisher Astro Publishing di Pirlo L. Via Bonomelli, 106 25049 Iseo - BS - ITALY email info@astropublishing.com Internet Service Provider Aruba S.p.A. Via San Clemente, 53 24036 Ponte San Pietro - BG - ITALY Copyright All material in this magazine is, unless otherwise stated, property of Astro Publishing di Pirlo L. or included with permission of its author. Reproduction or retransmission of the materials, in whole or in part, in any manner, with- out the prior written consent of the copyright holder, is a violation of copy- right law. A single copy of the materi- als available through this course may be made, solely for personal, noncom- mercial use. Users may not distribute such copies to others, whether or not in electronic form, whether or not for a charge or other consideration, with- out prior written consent of the copy- right holder of the materials. The publisher makes available itself with having rights for possible not charac- terized iconographic sources. Advertising - Administration Astro Publishing di Pirlo L. Via Bonomelli, 106 25049 Iseo - BS - ITALY email admin@astropublishing.com A galactic shock is shaping Stephan’s Quintet Two waterworlds in the Kepler-138 system The Fermi paradox − many solutions, no certainty Webb confirms its first exoplanet Mysterious “ghost” stars wandering around for billions of years Pair of black holes dine together in nearby galaxy merger 4 14 18 22 24 26 30 34 42 46 48 ﻣﺠﻠــــــــﺔ ــــــــﺔ ﻋﻠﻤ ــــــــﻞﺷــــــــﻬﺮ ﻦ ﺗﺼــــــــﺪر ــــــــــــﺔ ــــــــــــﺔ واﻟﺘﻘﻨ ﻟﻠﻤﻌﻠﻮﻣــــــــــــﺎت اﻟﻌﻠﻤ ﻣﺘﻮﻓﺮة ﻣﺠﺎﻧﺎً ﻣﻦ ﺧﻼل اﻹﻧ ﺖ – ﻣﺎرس أﺑﺮﻞ 2023 اﻟﻨﺴﺨﺔ اﻟﻌﺮ ﺔﻣﻦ اﻟﻤﺠﻠﺔ ASTROFILO اﻟ ﻤﺔ واﻟﺘﺤﺮﺮ . م ﻣﺎﺟﺪ أﺑﻮ زاﻫﺮة ﻣﺮاﺟﻌ ﺔاﻟﻤﺤﺘﻮى ـﺻﺎﻟ . أ ﺢ اﻟﺼﻌﺐ اﻟﻤﻌﺎﻟـﺠﺔواﻟﺘﻨﺴﻴﻖ . أ ﻣﻔﺎزﻋ ﺪاﻟﻠﻄ ﻒ اﻟﻤﺘﺎ ﻌﺔاﻻﻟﻜ وﻧ ﺔ . م ﻧﻮافﻋ ﺪا ﻷﻟﮫ ﺣﻘﻮق اﻟﻨﺸﺮ ﻤﻴــﻊ اﻟﻤــﻮاد اﻟـــﻮاردة ﻓــﻲﻫــﺬ ﻩ اﻟﻤﺠﻠــﺔ ﻫــﻲ ﻣﻠــﻚ ﻟﻤﺆﺳﺴـﺔ Astro Publishing di Pirlo L ﻣـﺎ ﻟـﻢ ُـﻨﺺﻋﻠــﻰﺧـﻼف ذﻟــﻚ أو ﻣﻀــﻤﻨﺔ ﺑـﺈذن ﻣــﻦ ﻣﺆﻟﻔﻬــﺎ ًـــﺎ أو ﻌـــﺪ إﻋـــﺎدة إﻧﺘــــﺎج اﻟﻤــﻮاد أو إﻋـــﺎدة إرﺳــﺎﻟﻬﺎ ﻠ ــــــﺄيﻃﺮﻘـــــﺔ دون اﻟــــــ ًــــــﺎ ﺟﺰ ـ ﺤﺼﻮل ﻋﻠــــــﻰﻣﻮاﻓﻘــــــﺔ ـــﺔ ﻣﺴـــ ﻘﺔ ﻣـــﻦ ﺻــــﺎﺣﺐﺣﻘـــﻮق اﻟﻄﺒـــﻊ واﻟﻨﺸـــﺮ ﺧﻄ ًــﺎ ﻟﻘــﺎﻧﻮن ﺣﻘــﻮق اﻟﻄﺒــﻊ اﻧﺘﻬﺎ . واﻟﻨﺸــﺮ ﻤﻜــﻦ ﻋﻤــﻞ ﻧﺴــــــﺨﺔ واﺣـــــــﺪة ﻣـــــــﻦ اﻟﻤــــــﻮاد اﻟﻤﺘﺎﺣــــــﺔ ﻟﻼﺳـــــــﺘﺨﺪام ــﻮزﻟﻠﻤﺴـــﺘﺨﺪﻣ اﻟﺸﺨﺼـﻲﻓﻘــﻂﻏــ اﻟﺘﺠــﺎريﻻ ﻳﺠ ـــﺎن ذﻟـــﻚ ﺗﻮزــــﻊ ﻫــــﺬﻩ اﻟﻨﺴـــﺦ ﻋﻠـــﻰ اﻵﺧـــﺮﻦﺳـــﻮاء أ ﻓـــﻲﺷـــ ﻞ إﻟﻜ وﻧـــﻲ أمﻻ ﺳـــﻮاء ﻣﻘﺎﺑـــﻞ رﺳـــﻮم أو ـــﺔ ﻣﺴـــ ﻘﺔ ــــﺪون ﻣﻮاﻓﻘـــﺔ ﺧﻄ ــــﺎرآﺧــﺮأم ﻻ أي اﻋﺘ ﻣﻦ ﺻﺎﺣﺐﺣﻖ ﻧﺴﺦ اﻟﻤﻮاد . اﻟ ﻤﺔ - اﻟﻘﺴﻢ اﻟﻌﺮﻲ Jeddah astronomy society Jeddah city, Saudi Arabia jeddah_society@yahoo.com Email ٤ ١٤ ١٨ ٢٢ ٢٤ ٢٦ ٣٠ ٣٤ ٤٢ ٤٦ ٤٨ اﻟﻨﺠﻮم ﺗﺨﺘﻔﻲأﺳﺮع وأﺳﺮع ﺗﻜﺸﻒ أﺳﺮاراً ﺟﺪ ﺪة ﻣ ارات اﻟﻬ ﺪروﺟ ﻣﺠﺮ ﻨﺎ اﻟﻌﻈ ﻤﺔ ) در اﻟﺘ ﺎﻧﺔ ( ﺘﻔﺎﺻﻴﻞﻏ ﻣﺴﺒﻮﻗﺔ ﺛﻘﺐ أﺳﻮد ﻠﺘﻬﻢ ﻧ ﻤﺎً ﻋﺎﺑﺮاً إﻛﺘﺸﺎفﻧ ﻢ ﺪاﺋﻲﻋﻠﻰأﻧﮫ ﻧﻈﺎم ﻧ ﻤﻲﺛﻨﺎﺋﻲ ﺗﺼﺎدمﻣﺠﺮيﺷ ﻞ ﻤﺎﺳ ﺔﺳﺘ ﻔﺎن ﻮﻛ ﺎن ﻣﺎﺋ ﺎنﻓﻲﻧﻈﺎم ﻛ ﻠﺮ - ١٣٨ ﻣﻔﺎرﻗﺔﻓ ﻣﻲ – ﺣﻠﻮل ﻋﺪ ﺪة وﻟﻜﻦ دون ﻘ ﺗﻠﺴ ﻮبو ﺐ ﻳﺆﻛﺪ وﺟﻮد ﻮﻛ ﺔ اﻟﻨ ﻤﻲاﻷول ﻧﺠﻮم أﺷ ﺎح " " ﻏﺎﻣﻀﺔ ﺗﺘﺠﻮل ﻣﻨﺬ ﻣﻠ ﺎرات اﻟﺴﻨ ﺛﻨﺎﺋﻲ ﻣﻦ اﻟﺜﻘﻮب اﻟﺴﻮداء ﺘﻌ ﺸﺎن ﻣﻌﺎً