Free Astronomy Magazine March-April 2024 ARABIC VERSION

WASP-69b’s surprisingly long comet-like tail by W. M. Keck Observatory Nicolás Lira i ew data from W. M. Keck Observatory on Maunakea, Hawai ‘ i Island confirms exo- planet WASP-69b, known for its es- caping atmosphere, is forming a comet-like tail that is even longer than previously observed. Named WASP-69b, scientists have studied this Jupiter-sized planet in the past, focusing on its escaping atmosphere and observing only a small trail of helium gas. But during a press con- ference at the January 2024 Meeting of the American Astronomical Soci- ety, a University of California, Los Angeles (UCLA)-led team of re- searchers announced that new Keck Observatory data reveal the tail is at N ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ 40 رﺳﻢ ﺗﺨ ﻠﻲ ﻟﻠ ﻮﻛﺐ اﻟﻨ ﻤـﻲ WASP-69b اﻟــﺬ ــﺪورﺣــﻮل ﻧ ﻤــﮫ اﻟﻤﻀــ ﻒ . ﻳﻮﺟــﺪ أدﻧـــﺎﻩ رﺳﻢ ﻣﺘﺤﺮك ﻳﻮﺿـﺢ اﻟﻐـﻼف اﻟـ ـ ﺠﻮي اﻟﻤﺘﺴـﺮ ﻟﻠ ﻮﻛـــــــــﺐ WASP-69b ﻨـــــــــﺘﺞ ر ﺎﺣــــــــــ واﻟـــــــــﺬ ﺎ ـــﺔ اﻟﻘﺎدﻣـــﺔ ـــﺔ ﺗﺘﻔﺎﻋـــﻞ ﻣـــﻊ اﻟﺮ ـــﺎح اﻟﻨ ﻤ ﻮﻛﺒ ﻣـــﻦ ﻧ ﻤـــﮫ اﻟﻤﻀـــ ﻒ . ﻳﺨﻠـــﻖ ﻫـــﺬا اﻟﺘﻔﺎﻋـــﻞ ـــﻼً ذ ﻃـﻮ ﻼً ﺎت ﺸــ ﮫ اﻟﻤــﺬﻧ و ﻤﺘـﺪ ﻃﻮﻟــﮫ إﻟــﻰ أﻛــ ﻣﻦ 350 أﻟﻒﻣﻴﻞ . - ﻣﺎﺭﺱ ﺃﺑﺮﻳﻞ 2 0 2 4 WASP-69b" ﻟﮫ" ذﻳﻞ ﻃﻮﻳﻞ ﻏﺮ ﺐ ﺎﻟﻤﺬﻧ ﺎت : ﻘﻠﻢ ﻧﻴ ﻮﻻس ﻟ ا - ﻣﺮﺻﺪ ﻛﻲ ﻚﻛ. إم. ﻠﻴﻮد ﺗﺆﻛـﺪ ﺑﻴﺎﻧﺎت ﺟﺪﻳﺪة ﻣﻦ ﻣﺮﺻﺪ ﻛﻴـﻚ ﻋـﲆ ﺟﺒﻞ ﻣﻮﻧﺎﻛﻴﺎ ﺑﺠﺰﻳـﺮة ﻫـﺎواي أن اﻟﻜﻮﻛـﺐ اﻟﻨﺠﻤ ـﻲ WASP-69b ، ا ﻌ ـﺮوف ﺑﻐﻼﻓــﻪ اﻟﺠﻮي ا ﻨﻔﻠـﺖ ﻳﺸـﻜﻞ ذﻳـﻼً ﻳﺸـﺒﻪ ذﻳـﻞ ا ﺬﻧﺒ ﺎت أﻃﻮل ﺣﺘﻰ ﻣﻤﺎ ﺗﻢ رﺻﺪه ﺳﺎﺑﻘ ﺎً ﻟﻘﺪ درس اﻟﻌﻠﻤﺎء ﻫﺬا اﻟﻜﻮﻛﺐ اﻟﺬي ﻳﺤﻤـﻞ اﺳﻢ WASP-69b ﰲ ا ﺎﴈ ﻣﻊ اﻟﱰﻛﻴﺰ ﻋﲆ ﻏﻼﻓﻪ اﻟﺠﻮي ا ﺘـ ـ ﴪب وﻣﺮاﻗﺒـﺔ ﻣﺴـﺎر ﺻﻐ ﻓﻘﻂ ﻣﻦ ﻏﺎز اﻟﻬﻠﻴﻮم . وﻟﻜﻦ ﺧﻼل ﻣﺆﺗﻤﺮ ﺻﺤﻔﻲ ﺿﻤﻦ اﺟﺘﻤﺎع اﻟﺠﻤﻌﻴﺔ اﻟﻔﻠﻜﻴﺔ اﻷﻣﺮﻳﻜﻴﺔ ﰲ ﻳﻨﺎﻳﺮ 2024 أﻋﻠﻦ ﻓﺮﻳﻖ ﻣﻦ اﻟﺒـﺎﺣﺜ ﺑﻘﻴـﺎدة ﺟﺎﻣﻌـﺔ ﻛﺎﻟﻴﻔﻮرﻧﻴﺎ ﰲ ﻟﻮس أﻧﺠﻠـﻮس ) UCLA ( أن ﺑﻴﺎﻧﺎت ﻣﺮﺻﺪ ﻛﻴﻚ اﻟﺠﺪﻳﺪة ﺗﻜﺸﻒ أن ﻃﻮل اﻟﺬﻳﻞ ﻻ ﻳﻘﻞ ﻋﻦ ٣٥٠ أﻟﻒ ﻣﻴﻞ .