Free Astronomy Magazine November-December 2024 ARABIC VERSION

Webb reveals a galaxy shaped like a question mark byNASA/ESA/CSA Leah Ramsay ChristinePulliam t’s7billionyearsago,andtheuni- verse’s heyday of star formation is beginningtoslow.Whatmight our Milky Way galaxy have looked likeatthattime?Astronomersusing NASA’sJamesWebbSpaceTelescope have found clues in the form of a cosmicquestionmark,theresultof a rare alignment across light-years ofspace. “Weknowofonlythreeor fouroccurrencesofsimilargravita- ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ 26 " و ﺐ" ﻜﺘﺸﻒ ﻣﺠﺮة ﺗﺸ ﮫ ﺳﺘﻔﻬﺎم ﻻا ﻋﻼﻣﺔ ﻧﻮﻓﻤﺒﺮ - ﺩﻳﺴﻤﺒﺮ 2 0 2 4 ﻟﻘـﺪ ﻣﺮت ﺳﺒﻌﺔ ﻣﻠﻴﺎرات ﺳﻨﺔ ﴫ ـ وﺑﺪأ ﻋ ازدﻫﺎر ﺗﻜـ ﻮﻳﻦ اﻟﻨﺠـﻮم ﰲ أرﺟـﺎء اﻟﻜـﻮن ﻳﺘﺒﺎﻃﺄ ﻓ ﻜﻴـﻒ ﻛﺎﻧـﺖ ﺗﺒـﺪو ﻣﺠﺮﺗﻨـﺎ درب اﻟﺘﺒﺎﻧﺔ : ﻘﻠﻢ ﻟ ﺎ راﻣﺰي و ﺑﻮﻟ ﺎم ﻛﺮﺴﺘ و ﺎﻟﺔ ﻧﺎﺳﺎ / و ﺎﻟﺔ اﻟﻔﻀﺎء اﻷوروﺑ ﺔ و ﺎﻟﺔ اﻟﻔﻀﺎء اﻟﻜﻨﺪ ﺔ اﻟﺘﺒﺎﻧﺔ ﺑ ﺬﻟﻚ اﻟﻮﻗﺖ؟ ﻟﻘﺪ وﺟﺪ ﻋﻠﻤﺎء اﻟﻔﻠـﻚ اﻟﺬﻳﻦ ﻳﺴﺘﺨﺪﻣﻮن ﺗﻠﺴﻜﻮب ﺟـﻴﻤﺲ وﻳـﺐ اﻟﻔﻀﺎﺋﻲ اﻟﺘﺎﺑﻊ ﻟﻮﻛﺎﻟﺔ ﻧﺎﺳﺎ أدﻟﺔ ﰲ ﺷـﻜﻞ ﻋﻼﻣ ﺔ اﺳﺘﻔﻬﺎم ﻛﻮﻧﻴﺔ ﻧﺘﻴﺠـﺔ ﻻﺻـﻄﻔﺎف ﻧﺎدرة ﻋﱪ ﺳﻨﻮات ﺿﻮﺋﻴﺔ ﻣﻦ اﻟﻔﻀﺎء . ﻗﺎل ﻋﺎﻟﻢ اﻟﻔﻠﻚ ﻏﻴﻮم دﻳﺴﱪي ﻣﻦ ﺟﺎﻣﻌـﺔ ﺳﺎﻧﺖ ﻣﺎري ﰲ ﻣﺪﻳﻨﺔ ﻫﺎﻟﻴﻔﺎﻛﺲ اﻟﻜﻨﺪﻳـﺔ اﻟﻮﻳﺐ، ﻣﻤﺎ ﻳﺸ إﱃ أﻧﻪ رﺑﻤﺎ ﻧﺠﺪ ا ﺰﻳﺪ ﻣﻦ ﻫﺬه اﻷﺷﻴﺎء اﻵن ." وﻫﻮ ﻋﻀـﻮ ﰲ اﻟﻔﺮﻳـﻖ اﻟـﺬي ﻗـﺪم ﻧﺘـﺎﺋﺞ ﺗﻠﺴﻜﻮب : " وﻳﺐ ﻧﺤﻦ ﻧﻌﻠﻢ ﻓﻘﻂ ﻋﻦ ﺛـﻼث أو أرﺑﻊ ﺣﺎﻻت ﻣﻦ ﺗﻜﻮﻳﻨﺎت أﻟﻴﻨﺲ اﻟﺠﺎذﺑﻴ ﺔ ا ﺘﺸﺎﺑﻬﺔ ﰲ اﻟﻜﻮن ا ﺮﺋ ﻲ ﻣﻤﺎ ﻳﺠﻌـﻞ ﻫـﺬا اﻻﻛﺘﺸﺎف ﻣﺜ ﻷﻧـ اً ﻪ ﻳﻮﺿـﺢ ﻗـﻮة ﻧﻄـﺎق اﻟﻮﻳﺐ ﻣﻤﺎ ﻳﺸ إﱃ أﻧﻪ رﺑﻤﺎ ﻧﺠﺪ ا ﺰﻳﺪ ﻣﻦ ﻫﺬه اﻷﺷﻴﺎء اﻵن ."