Free Astronomy Magazine January-February 2025 ARABIC VERSION

Sincethesesmallicybodiesareinan orbitaltransitionalphase,theyhave been the subject of various studies asscientistsseektounderstandtheir composition, the reasons behind their outgassing activity — the loss oftheiricesthatlieunderneaththe surface — and how they serve as a linkbetweenprimordialicybodies ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ 11 - ﻳﻨﺎﻳﺮ ﻓﺒﺮﺍﻳﺮ 2 0 2 5 ﺗﺼـــﻮر ـــﺎﻟﻲ ﺧ ﻟﻨﺸــــﺎط اﻧ ﻌـــﺎث اﻟﻐـــﺎزات ﻣــــﻦ اﻟﻘﻨﻄــــﻮر 29P / - ﺷﻮاﺳــــﻤﺎن واﺗﺸــــﻤﺎن 1 ﻤــــﺎ ﻳُــــﺮىﻣــــﻦ اﻟــــ ـ ﺠﺎﻧﺐ وﻗــــﺪ أﺷــــﺎر أرﺻــــﺎد اﻟﻄــــﻮل اﻟﻤﻮﺟﻲ اﻟﺮادﻳﻮي اﻟﺴﺎ ﻘﺔ إﻟﻰ وﺟﻮد ﻧﻔﺎﺛﺔ ﻣ ﻮﻧــﺔ ﻣـــﻦ ﻏـــﺎز أول أﻛﺴــ ﺪ اﻟﻜﺮـــﻮن ﻣﻮﺟﻬـــﺔ ﻧﺤـــــــﻮ اﻷرض ﻤــــــــﺎ ﻫــــــــﻮ ﻣﻮﺿـــــــﺢ ﻋﻠــــــــﻰ اﻟ ﻤــــــــ ] NASA,ESA,CSA,LeahHustak(STScI ( ﻷ ﻧﻈﺮاً ن ﻫﺬه اﻷﺟﺴﺎم اﻟﺠﻠﻴﺪﻳﺔ اﻟﺼـ ﻐ ة ﺗﻤﺮ ﺑﻤﺮﺣﻠﺔ اﻧﺘﻘﺎﻟﻴﺔ ﻣﺪارﻳـﺔ ﻓﻘـﺪ ﻛﺎﻧـﺖ ﺎُ ﻣﻮﺿﻮﻋ ﻟﺪراﺳﺎت ﻣﺨﺘﻠﻔﺔ ﺣﻴـ ﺚ ﻳﺴـﻌﻰ اﻟﻌﻠﻤﺎء إﱃ ﻓﻬـﻢ ﺗﺮﻛﻴﺒﻬـﺎ واﻷﺳـﺒﺎب وراء ﻧﺸﺎﻃﻬﺎ اﻟﻐﺎزي ﻓﻘﺪ - ان اﻟﺠﻠﻴﺪ اﻟﺬي ﻳﻘـﻊ ﺗﺤﺖ اﻟﺴﻄﺢ - وﻛﻴﻒ ﺗﻌﻤﻞ ﻛﺤﻠﻘﺔ وﺻـﻞ ﺑ اﻷﺟﺴﺎم اﻟﺒﺪاﺋﻴﺔ ﰲ اﻟﻨﻈـﺎم اﻟـ ـ ﺸﻤﴘ اﻟﺨﺎرﺟﻲ وا ﺬﻧﺒﺎت ا ﺘﻄﻮرة .