Free Astronomy Magazine November-December 2024 ARABIC VERSION

notrocketscience.Wemadethedis- covery simply by looking at the im- ages. And while we were really surprised, our statistical analyses of the data confirmed what we clearly saw,” said Shara. This accomplishment is entirely due to Hubble’s unique capabilities. Ground-based telescope images do not have the clarity to see novae deep inside M87. They cannot re- solvestarsorstellareruptionsclose to the galaxy’s core because the black hole’s surroundings are far too bright. Only Hubble can detect novaeagainstthebrightM87back- ground.Novaeareremarkablycom- mon in the universe. One nova erupts somewhere in M87 every day.Butsincethereareatleast100 billiongalaxiesthroughoutthevisi- bleuniverse,around1millionnovae erupt every second somewhere out there.     ﻧﻮﻓﻤﺒﺮ - ﺩﻳﺴﻤﺒﺮ 2 0 2 4 ﻳ ﻌـﻮد ﻫ ـﺬا اﻹﻧﺠـﺎز ﺑﺎﻟﻜﺎﻣ ـﻞ إﱃ ﻗ ـﺪرات ﺗﻠﺴﻜﻮب ﻫﺎﺑﻞ اﻟﻔﺮﻳﺪة . ﻻ ﺗﺘﻤﺘــﻊ ﺻــﻮر اﻟﺘﻠﺴــﻜﻮﺑ ﺎت اﻷرﺿــﻴ ﺔ ﺑﺎﻟﻮﺿﻮح اﻟﻜﺎﰲ ﻟﺮؤﻳﺔ ا ﺴﺘﻌﺮات ﰲ أﻋﻤﺎق ا ﺠﺮة M87 وﻻ ﻳﻤﻜﻨﻬﺎ ﺗﻤﻴﻴﺰ اﻻﻧﻔﺠﺎرات اﻟﻨ ﺠﻤﻴﺔ أو اﻟﻨﺠﻮم اﻟﻘﺮﻳﺒﺔ ﻣﻦ ﻗﻠﺐ ا ﺠﺮة ﻷن ﻣﺤﻴﻂ اﻟﺜﻘﺐ اﻷﺳﻮد ﺷـﺪﻳﺪ اﻟﺴـﻄﻮع ـــ وﻟﻜﻦ إﻣﻜﺎﻧﻴﺎت ﺗﻠﺴﻜﻮب ﻫﺎﺑـﻞ اﻟﻔﻀـﺎﺋﻲ ﺗﺠﻌﻠﻪ ﻗﺎدراً ﻋﲆ اﻛﺘﺸﺎف ا ﺴﺘﻌﺮات ﺑﺠﻮار ا ﺠﺮة M87 اﻟﺴﺎﻃﻌﺔ . ﺗﻌﺪ ﻫﺬه اﻷرﺻ ﺎد ﻟﻠﻨﻔﺎﺛـﺎت ﻣﻬﻤـﺔ ﻟﻔﻬـﻢ ﺗﻄـﻮر اﻟﻨﺠـ ﻮم ا ﺘﻔﺠـﺮة واﻟﻄﺎﻗـﺔ اﻟﺘـﻲ ﺗﻄﻠﻘﻬﺎ ﻛﻤﺎ أﻧﻬـﺎ ﺗﺴـﺎﻋﺪﻧﺎ ﰲ ﻓﻬـﻢ ﺗـﺄﺛ اﻟﻨﻔﺎﺛﺎت اﻟ ﺒﻼزﻣﻴﺔ ﻋﲆ ا ﺠﺮات ا ﺤﻴﻄﺔ ﺑﻬﺎ وﻟﻜﻦ ﻟﻢ ﻣﺎ ﻳﺴﺎﻋﺪ ﻋﲆ ﻓﻬﻢ اﻟﻌﻤﻠﻴﺎت ا ﻌﻘﺪة اﻟﺘـﻲ ﺗﺸﻜﻞ اﻟﻜﻮن اﻟﺬي ﻧ ﺮﺻﺪه اﻟﻴﻮم . إن ا ﺴﺘ ﻌﺮات ﺷﺎﺋﻌﺔ ﰲ اﻟﻜﻮ ن ﺣﻴﺚ ﻳﻨﻔﺠﺮ ﻣﺴﺘﻌﺮ واﺣﺪ ﰲ ﻣﺠﺮة M87 ﻛﻞ ﻳـﻮم ﻟﻜـﻦ اً ﻧﻈﺮ ﻟﻮﺟﻮد ﻣﺎ ﻻ ﻳﻘﻞ ﻋﻦ 100 ﻣﻠﻴﺎر ﻣﺠﺮة ﰲ اﻟﻜﻮن ا ﺮﺋﻲ ﻓﺈن ﺣﻮاﱄ ﻣﻠﻴﻮن ﻣﺴـﺘﻌﺮ ﻳﻨﻔﺠﺮ ﻛﻞ ﺛﺎﻧﻴﺔ ﰲ ﻣﻜﺎن ﻣﺎ ﻫﻨﺎ .ك