Free Astronomy Magazine March-April 2026 ARABIC VERSION

S An exoplanet whose composition defies explanation byNASA/ESA/CSA NASAWebbMissionTeam cientists using NASA’s James WebbSpaceTelescopehaveob- servedararetypeofexoplanet, or planet outside our solar system, whose atmospheric composition challenges our understanding of howitformed.OfficiallynamedPSR J2322-2650b, this Jupiter-mass ob- ject appears to have an exotic he- lium-and-carbon-dominated atmo- sphereunlikeanyeverseenbefore. Sootcloudslikelyfloatthroughthe air, and deep within the planet, thesecarboncloudscancondense andformdiamonds.Howtheplanet cametobeisamystery. “Thiswasan absolutesurprise,” saidstudyco-au- thorPeterGaooftheCarnegieEarth andPlanetsLaboratoryinWashing- ton. “I remember after we got the datadown,ourcollectivereaction MARCH-APRIL2026 ﻠﺔ ﻣﺠ FreeAstronomy ﺎﻟﻌﺮ ﺔ 30 ﻮﻛﺐﺧﺎرﺟﻲ ﺘﺤﺪ اﻟﻨﻤﺎذج اﻟﻌﻠﻤـ ﺔ اﻟﺴﺎﺋﺪة : ﻘﻠﻢ ﻓﺮﻖ ﻣﻬﻤﺔ ﺗﻠﺴ ﻮب و ﺐ و ﺎﻟﺔ ﻧﺎﺳﺎ / و ﺎﻟﺔ إ ﺴﺎ / و ﺎﻟﺔ اﻟﻔﻀﺎء اﻟﻜﻨﺪ ﺔ رﺻـﺪ ﻋﻠﻤﺎء ﺑﺎﺳﺘﺨﺪام ﺗﻠﺴـﻜﻮب ﺟـﻴ ﻤﺲ وﻳﺐ اﻟﻔﻀﺎﺋﻲ اﻟﺘﺎﺑﻊ ﻟﻨﺎﺳﺎ ﻧﻮﻋﺎ ﻧﺎدر اً ﻣـﻦ اﻟﻜﻮاﻛﺐ اﻟﺨﺎرﺟﻴﺔ أو اﻟﻜﻮاﻛﺐ اﻟﺘـﻲ ﺗﻘـﻊ ﺧـﺎرج ﻧﻈﺎﻣﻨـﺎ اﻟﺸـ ـ ﻤﴘ واﻟﺘـﻲ ﻳﺸـﻜﻞ ﺗﺮﻛﻴﺐ ﻏﻼﻓﻬﺎ اﻟﺠﻮي ﺗﺤﺪﻳ ﺎً ﻟﻔﻬﻤﻨﺎ ﻟﻜﻴﻔﻴﺔ . ﻧﻬﺎ ﺗﻜﻮ ﻳﻄﻠﻖ ﻋﲆ ﻫﺬا اﻟﻜﻮﻛﺐ ﺎً رﺳﻤﻴ اﺳﻢ PSRJ2322-2650b وﻳﺒﺪو أن ﻫﺬا اﻟﺠـﺮم اﻟﺬي ﻳﻘﺎرب ﻛﺘﻠﺔ ﻛﻮﻛـﺐ ا ﺸـﱰي ﻳﻤﺘﻠـﻚ ﺎً ﻏﻼﻓ ﺎً ﺟﻮﻳ ﺎً ﻏﺮﻳﺒـ ﻳﻬـﻴﻤﻦ ﻋﻠﻴـﻪ اﻟﻬﻠﻴـﻮم واﻟﻜﺮﺑﻮن ﻻ ﻣﺜﻴﻞ ﻟـﻪ ﻋـﲆ اﻹﻃـﻼق . ﻣـﻦ ا ُﺮﺟ ﺢ أن ﺗﻄﻔﻮ ﺳﺤﺐ اﻟ ﺴﺨﺎم ﰲ اﻟﻬـﻮاء وﰲ أﻋﻤﺎق اﻟﻜﻮﻛﺐ ﻳﻤﻜﻦ أن ﺗﺘﻜﺜ ﻒ ﺳﺤﺐ ـ اﻟﻜﺮﺑﻮن ﻫﺬه وﺗﺸﻜ ﺎسﻞ ا . ﻛﻴﻒ ﻧﺸﺄ ﻫﺬا اﻟﻜﻮﻛـﺐ ﻳﺒﻘـﻰ ﻟﻐـﺰ . "اً ﻟﻘـﺪ ﻛﺎﻧـﺖ ﻫـﺬه ﻣﻔﺎ ﺟﺄة ﻣﻄﻠﻘﺔ " ﻛﻤﺎ ﻗﺎل ﺑﻴﱰ ﻏﺎو ا ﺸﺎرك ﰲ إﻋـﺪاد اﻟﺪراﺳـﺔ ﻣـﻦ ﻣﺨﺘـﱪ ﻛـﺎرﻧﻴﺠﻲ ﻟ ﻸرض واﻟﻜﻮاﻛﺐ ﰲ واﺷﻨﻄﻦ " . أﺗﺬﻛﺮ ﺑﻌـﺪ أن ﺣﺼـﻠﻨﺎ ﻋـﲆ اﻟﺒﻴﺎﻧـﺎت ﻛـﺎن رد ﻓﻌﻠﻨـﺎ ــــــ - ﻣﺎﺭﺱ ﺃﺑﺮﻳﻞ 2 0 2 6