Free Astronomy Magazine May-June 2026 ARABIC VERSION

MAY-JUNE2026 This analysis is also importantbe- cause it paves the way for the new NSF–DOEVeraC.RubinObservatory, fundedbytheNSFandDOE/SC,and jointly operated by NSF NOIRLab and SLAC, to collect complementary data during its decade-long Legacy Survey of Space and Time (LSST). LSSTisadeepandwidesurveythat will catalog about 20 billion galaxies across the entire Southern Hemi- sphere sky. The data can be combinedwith those from surveys like DES to en- able high-accuracy measurements of cosmological parameters that will furtherrefineourunderstandingof darkenergyandtheexpansionhis- toryoftheUniverse.“DEShasbeen transformative, and the NSF–DOE VeraC.RubinObservatorywilltake us even further,” said Chris Davis, NSF Program Director for NOIRLab. “Rubin’s unprecedented survey of the southern sky will enable new tests of gravity and shed light on darkenergy.”   ﺗﻜﺘﺴﺐ ﻫﺬه اﻟﺪراﺳﺔ أﻫﻤﻴـﺔ ﺧﺎﺻـﺔ ﻷﻧﻬـﺎ ﺗﻤﻬّﺪ اﻟﻄ ﺮﻳﻖ ﺮﺻﺪ ﻓ ا ﳼ . روﺑ اﻟﺠﺪﻳـﺪ ا ﻤﻮل ﻣﻦ ا ﺆﺳﺴﺔ اﻟﻮﻃﻨﻴﺔ ﻟﻠﻌﻠـﻮم ووزارة اﻟﻄﺎﻗﺔ اﻷﻣ ﻛﻴﺔ واﻟﺬي ﻳ ﺪار ﺑﺸﻜﻞ ﻣﺸـﱰك ﻣﻦ ﻗﺒﻞ ﻣﺨﺘﱪ اﻟﺒﴫ ﻳﺎت اﻟﻔﻠﻜﻴـﺔ اﻟـﻮ ﻃﻨﻲ وﻣﺮﻛﺰ ا ﴪع اﻟﺨﻄـﻲ ﰲ ﺳـﺘﺎﻧﻔﻮرد وذﻟـﻚ ﻟﺠﻤﻊ ﺑﻴﺎﻧﺎت ﻣ ﻜﻤّﻠﺔ ﺧﻼل ﻣ ـ ﴩوﻋﻪ ا ﻤﺘـﺪ ﻟﻌﻘﺪ ﻛﺎﻣﻞ ا ﻌـﺮوف ﺑﺎﺳـﻢ ا ﺴـﺢ اﻟﱰاﺛـﻲ ﻟﻠﻔﻀﺎء واﻟﺰﻣﻦ . وﻳُﻌـﺪ ﻫـﺬا ا ﺴـﺢ ﻋﻤﻴﻘـﺎً وواﺳﻊ اﻟﻨﻄﺎق، إذ ﺳﻴﻘﻮم ﺑﻔﻬﺮﺳﺔ ﻧﺤﻮ ٢٠ ﻟﻠ ﻔﻀﺎء واﻟﺰﻣﻦ ﻌـوﻳ . ﺪ ﻫـﺬا ا ﺴـﺢ ﻋﻤﻴﻘـﺎً وواﺳﻊ اﻟﻨﻄﺎق إذ ﺳﻴﻘﻮم ﺑﻔﻬﺮﺳﺔ ﻧﺤـﻮ 20 ﻣﻠﻴﺎر ﻣﺠﺮة ﻋﱪ ﻛﺎﻣﻞ ﺳـﻤﺎء ﻧﺼـﻒ اﻟﻜـﺮة اﻟﺠﻨﻮﺑﻲ وﻳﻤﻜﻦ دﻣـﺞ ﻫـﺬه اﻟﺒﻴﺎﻧـﺎت ﻣـﻊ ﻧﺘﺎﺋﺞ ﻣﺴﻮﺣﺎت ﻣﺜﻞ ﻣﺴﺢ اﻟﻄﺎﻗﺔ ا ﻈﻠﻤـﺔ ﻹﺗﺎﺣﺔ ﻗﻴﺎﺳـﺎت ﻋﺎﻟﻴـﺔ اﻟﺪﻗـﺔ ﻟﻠ ﻤﻌـﺎﻣﻼت اﻟﻜﻮﻧ ﻴﺔ ﻣﻤﺎ ﻳﺴﻬﻢ ﰲ ﺗﺤﺴ ﻓﻬﻤﻨﺎ ﻟﻠﻄﺎﻗﺔ ا ﻈﻠ ﻤﺔ وﺗﺎرﻳﺦ ﺗﻤﺪد اﻟﻜﻮن ﺑﺸـﻜﻞ اﻓﻀـﻞ . وﻗﺎل ﻛﺮﻳﺲ دﻳﻔﻴﺲ، ﻣﺪﻳﺮ ﺑﺮﻧﺎﻣﺞ ﰲ ﻣﺨﺘﱪ اﻟﺒﴫﻳﺎت اﻟﻔﻠﻜﻴﺔ اﻟﻮﻃﻨﻲ :» ﻟﻘﺪ ﻛﺎن ﻣﺴﺢ اﻟﻄﺎﻗﺔ ا ﻈﻠﻤﺔ ﻣﴩوﻋﺎً ﺗﺤﻮﻳﻠﻴﺎً، وﺳﻴﺄﺧﺬﻧﺎ ﻗﺎل ﻛﺮﻳﺲ دﻳﻔﻴﺲ ﻣﺪﻳﺮ ﺑﺮﻧـﺎﻣﺞ ﰲ ﻣ ﺨﺘـﱪ اﻟﺒﴫﻳﺎت اﻟﻔﻠﻜﻴﺔ اﻟﻮﻃﻨﻲ :» ﻟﻘﺪ ﻛﺎن ﻣﺴﺢ اﻟﻄﺎﻗﺔ ا ﻈﻠﻤﺔ ﻣﴩوﻋﺎً ﺗ ﺤﻮﻳﻠﻴﺎً وﺳـﻴﺄﺧﺬﻧﺎ ﻣﺮﺻﺪ روﺑ إﱃ آﻓﺎق أﺑﻌﺪ . ﻣﻦ ذﻟﻚ إن ﻣﺴﺤﻪ ﻏ ا ﺴﺒﻮق ﻟﻠﺴـﻤﺎء اﻟﺠﻨﻮﺑﻴـﺔ ﺳ ـﻴﻤﻜﻨﻨﺎ ﻣــﻦ إﺟــﺮاء اﺧﺘﺒ ـﺎرات ﺟﺪﻳ ـﺪة ﻟﻠﺠﺎذﺑﻴﺔ وإﻟﻘﺎء اﻟﻀﻮء ﺑﺸﻜﻞ اﻛﺜﺮ ﺗﻔﺼـﻴﻼً ﻋﲆ ﻃﺒﻴﻌﺔ اﻟﻄﺎﻗﺔ ا ﻈﻠﻤﺔ «. - ﻣﺎﻳﻮ ﻳﻮﻧﻴﻮ 2 0 2 6