Free Astronomy Magazine November-December 2025 ARABIC VERSION

I White dwarf eats chunk of Pluto-like object by NASA/ESA Bethany Downer nournearbystellarneighbour- hood,aburned-outstarissnack- ing on a fragment of a Pluto-like object. With its unique ultravioletcapability, only the NASA/ESA Hub- ble Space Telescope could identify that this meal is taking place. Thestellarremnantisawhitedwarf about half the mass of our Sun, but that is densely packed into a bodyaboutthesizeofEarth.Scientists think the dwarf’s immense gravitypulled in and tore apart an icy Pluto analoguefrom the system’s ownver- NOVEMBER-DECEMBER2025 ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ 24 ﻗﺰم أﺑ ﺾ ﻠﺘﻬﻢ ﻗﻄﻌﺔ ﻣﻦﺟﺮم ﺸ ﮫ ﻠﻮﺗﻮ : ﻘﻠﻢ ﺑ ﺜﺎﻧﻲداوﻧﺮ و ﺎﻟﺔ ﻧﺎﺳﺎ / و ﺎﻟﺔ اﻟﻔﻀﺎء اﻷوروﺑ ﺔ ﻈﻬــﺮ اﻟﺮﺳـــﻢ ﻫــﺬا اﻟﺘﺨ ﻠــــــــﻲ ــــــــﻢ ﻧ ﻗــــــــﺰم أﺑـــــ ﺾﻣﺤـــــﺎط ﻘـــــﺮص ﻛﺒــــــــــ ﻣــــــــــﻦ اﻟــــــــــــ ﺤﻄﺎم ـــﺚ ﺗﺘﺴـــﺎﻗﻂ ﺣ ﻗﻄـــﻊ اﻟــــــــــﺤﻄﺎم ﻣــــــــــﻦ ﺟــــــــــﺮم ﺳﻤﺎوي ﺷﺒ ﮫ ﺑ ﻠﻮﺗﻮ ﻋﻠﻰ اﻟﻘﺰم اﻷﺑ ﺾ . [T. Pyle (Caltech, NASA's Jet Propulsion Laboratory)] رﺻـﺪ ﻋﻠﻤﺎء اﻟﻔﻠـﻚ ﺣـﺪﺛﺎُ ﻓﺮﻳـﺪاُ ﰲ ﺟﻮارﻧـﺎ اﻟﻨﺠﻤﻲ اﻟﻘﺮﻳﺐ ﺣﻴﺚ ﺷﻮﻫﺪ ﻗﺰم اﺑﻴﺾ وﻫﻮ ﺑﻘﺎﻳﺎ ﻧﺠﻢ ﻣﺤﱰق ﻳﺘﻐﺬى ﻋﲆ ﺟﺰء ﻣﻦ ﺟـﺮم ي ﺟﻠﻴﺪ ﻳﺸﺒﻪ ﺑﻠﻮﺗﻮ و ﺑﻔﻀﻞ ﻗﺪرﺗﻪ اﻟﻔﺮﻳـﺪة ﻋﲆ اﻟﺘﻘﺎط اﻷﺷﻌﺔ ﻓﻮق اﻟﺒﻨﻔﺴﺠﻴﺔ ﺗﻤﻜـﻦ ﺗﻠﺴﻜﻮب ﻫﺎﺑﻞ اﻟﻔﻀﺎﺋﻲ اﻟﺘﺎﺑﻊ ﻟﻮﻛﺎﻟﺔ ﻧﺎﺳﺎ ووﻛﺎﻟﺔ اﻟﻔﻀﺎء اﻷوروﺑﻴﺔ وﺣﺪه ﻣـﻦ ﺗﺤﺪﻳـﺪ وﻗﻮع اﻟﻮﺟﺒﺔ "ﻫﺬه " اﻟﻜﻮﻧﻴـﺔ ﺘﻜـﻮن ﻳ . ﻫـﺬا اﻟ ﺑﻴﺾ ﻷ ﻘﺰم أ ﻣﻦ ﺑﻘﺎﻳﺎ ﻧﺠـﻢ ﻓﻘـﺪ وﻗـﻮده اﻟﻨﻮوي و ﺗﺒﻠﻎ ﻛﺘﻠﺘـﻪ ﻧﺼـﻒ ﻛﺘﻠـﺔ اﻟﺸـﻤﺲ ﺗﻘﺮﻳﺒﺎً ﺑﻴﻨﻤﺎ ﻳﻀﻐﻂ ﰲ ﺣﺠﻢ ﻳﻘـﺎرب ﺣﺠـﻢ اﻷرض و . ﻳﻌﺘﻘﺪ اﻟﻌﻠﻤﺎء أن ﺟﺎذﺑﻴ ﻪﺘ اﻟﻬﺎﺋﻠـﺔ ﺳﺤﺒﺖ وﻣﺰﻗﺖ ﺟﺮﻣﺎً ﺎً ﺟﻠﻴﺪﻳ ﺷﺒﻴﻬﺎً ﻟﺒﻠﻮﺗـﻮ ﻧﻮﻓﻤﺒﺮ - ﺩﻳﺴﻤﺒﺮ 2 0 2 5