Free Astronomy Magazine September-October 2026 ARABIC VERSION

SEPTEMBER-OCTOBER2026 45 likeastar,planet,orblack hole—anyobjectwithsuf- ficient gravity — closely aligns with a background starfromourvantagepoint. Light from the distant star curvesasittravelsthrough the warped space-time caused by the nearer ob- ject’smass. Ifthealignmentisespecially close,thenearerobjectacts likeacosmiclens,focusing and magnifying light from thebackgroundstar. “Most often,thelensingobjectis anotherstar,” saidMatthew Penny,anassistantprofessor atLouisianaStateUniversi- ty, and co-lead of Euclid’s exoplanet science working group who has spent more than a decade simulating bothEuclidandRomandata. “But Roman will also be a- bletodetectplanetsorbit- ing them, and all kinds of weirdobjectsthatarenearly impossibletofindanyother way.” Among those strange ob- jectsareblackholesleftbe- hindafterthemostmassive stars die. Astronomers think there shouldbeabout100millionofthese stellar-massblackholesintheMilky Way,butsofarthey’vealmostexclu- sively detected the invisible objects whentheyinteractwithacompan-ion star. Yet most are thought to wanderthegalaxyalone.Romanwill find them even when there’s noth- ingnearbytorevealtheirpresence. While microlensing events created byplanetsaretypicallyhoursordays long, black holes pack in so much massthattheycanbendlightovera larger region of space, creating muchlongersignals.Thatmeansas- tronomers may need to observe them for years to see the objects move out of alignment. “The extra two years provided by Euclid give astronomers more time to watch the lens and source star driftapart,makingiteasiertoiden-tify the lens and measure its mass,” said Himanshu Verma, a postdoc-toral researcher at Louisiana State University who has been analyzing Euclid images to help scientists pre- dict and better understand the mi- crolensingeventsRomanisexpected to observe. Whilemostplanet-huntingmethods arebestatfindingscorchingworlds tightly hugging their host star, mi- crolensing is better at detecting worldsinorbitslargerthanEarth’s. That includes planets that whirl aroundtheirstarsfartherawaythan Neptune orbits the Sun and ones that have been kicked out of their originalstarsystemsaltogether,now destined to roam the galaxy all alone. “WhenRomanfindsthem,as- tronomerswillbeabletocross-refer- ence Euclid’s earlier observations to lookforstarsnearthelensingobject, sowecanconfirmwhetheraplanet istrulyrogueorjustorbitingveryfar fromitshoststar,” saidDavidBen- nett,aseniorresearchscientistand microlensingexpertattheUniversi-ty of Maryland, College Park and NASA’sGoddardSpaceFlightCenter. Scientists will also pair Euclid data withRoman’sGalacticPlaneSurvey. Thisobservationprogramwillreveal our home galaxy in unprecedented detailoveranareaabout400times larger than the galactic bulge sur- vey. In one month of observations spreadacrosstwoyears,theRoman surveywillunveiltensofbillionsof stars and explore previously un- charted structures. It’s tricky to study our own galaxy because it’s like trying to map the human body from inside a cell; there’salotofstuffintheway.Com- bining Euclid’s observations with Roman’swillletastronomerswatch stars slowly move across the sky. Sincestarsindifferentpartsofthe Milky Way tend to follow different paths,thiswillhelpastronomersfig-ure out which part of the galaxy thosestarsarein. “Oneofthemost excitingaspectsoftheEuclidobser- vations is that they give us the chance to test and improve Milky Way models,” Penny said. Euclid’sone-daydetouroffersasci- entific payout that will last for years and shows how much more can emerge when telescopes team up. “We’veshownthatthesetwotele- scopescanworktogethertodosci- ence that surpasses what either was originally designed for,” Rhodes said. “In doing so, we’ve established amodelforfuturecoordinatedob- servationsthatcanunlockfarmore discoveriesthaneithermissioncould makealone.”  ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ 45 ﺗﺸ إﱃ ﺣـﺪوث ﻇـﺎﻫﺮة ﻋﺪﺳـﺔ اﻟﺠﺎذﺑﻴﺔ اﻟﺼﻐﺮى وﺗﺤـﺪث ﻫـﺬه اﻟﻈـﺎﻫﺮة ﻋﻨـﺪﻣﺎ ﻳﺼـﻄﻒ ﺟــﺮم ﺿ ﺨﻢ، ﻣﺜﻞ ﻧﺠﻢ أو ﻛﻮﻛﺐ أو ﺛﻘﺐ أﺳﻮد أو أي ﺟـﺮم ﻳﻤﺘﻠـﻚ ﺟﺎذﺑﻴـﺔ ﻛﺎﻓﻴﺔ ﻣﻊ ﻧﺠـﻢ ﻳﻘـﻊ ﰲ اﻟﺨﻠﻔﻴـﺔ ﻛﻤﺎ ﻳُﺮى ﻣﻦ اﻷرض . ﻳﻨﺤﻨﻲ ﺿﻮء اﻟـﻨﺠﻢ اﻟﺒﻌﻴـﺪ أﺛﻨـﺎء ﻣﺮوره ﻋﱪ اﻟﺰﻣﻜﺎن ا ﻨﺤﻨﻲ ﺑﻔﻌﻞ ﻛﺘﻠ ـﺔ اﻟﺠ ـﺮم اﻷﻗــﺮ ب وإذا ﻛ ـﺎن اﻻﺻﻄﻔﺎف ﺷﺪﻳﺪ اﻟﺪﻗﺔ ﻓﺈ ن اﻟﺠﺮم اﻷﻗﺮب ﻳﻌﻤﻞ ﻛﻌﺪﺳﺔ ﻛﻮﻧﻴﺔ ﻓ ﻛﺰ وﻳﻀﺨﻢ ﺿـﻮء اﻟـﻨﺠﻢ اﻟﻮ اﻗـﻊ ﰲ اﻟﺨ ﻠﻔﻴﺔ . ﻗﺎل ﻣﺎﺛﻴﻮ ﺑﻴﻨﻲ اﻷﺳـﺘﺎذ ا ﺴﺎﻋﺪ ﰲ ﺟﺎﻣﻌﺔ وﻻﻳـﺔ ﻟﻮﻳﺰﻳﺎﻧـﺎ وأﺣﺪ ﻗﺎدة ﻣﺠﻤﻮﻋـﺔ ﻋﻤـﻞ ﻋﻠـﻮم اﻟﻜﻮاﻛــﺐ اﻟﺨﺎرﺟﻴ ـﺔ ﰲ إﻗﻠﻴ ـﺪس ـ واﻟﺬي أﻣ ﴣ أﻛﺜـﺮ ﻣـﻦ ﻋﻘـﺪ ﰲ ﻣﺤﺎﻛﺎة ﺑﻴﺎﻧﺎت ﻛﻞ ﻣﻦ ﺗﻠﺴﻜﻮﺑﻲ إﻗﻠﻴــﺪس وروﻣــﺎن :» ﰲ ﻣﻌﻈــﻢ اﻟﺤـﺎﻻ ت ﻳﻜـﻮن اﻟﺠﺴـﻢ ا ﺴـﺒﺐ ﻟﻠﻌﺪﺳﺔ ﻧﺠﻤﺎ آﺧﺮ ﻟﻜﻦ ﺗﻠﺴـﻜﻮب روﻣﺎن ﺳﻴ ﺘﻤﻜﻦ أﻳﻀ ﺎً ﻣﻦ اﻛﺘﺸﺎف ا ﻟﻜﻮاﻛـﺐ اﻟﺘـﻲ ﺗـﺪور ﺣـﻮل ﺗﻠـﻚ اﻟﻨﺠﻮم إﺿﺎﻓﺔ إﱃ أﻧﻮاع ﻏﺮﻳﺒﺔ ﻣﻦ اﻷﺟـﺮام اﻟﺘـﻲ ﻳﻜــﺎد ﻳﻜـﻮن ﻣـﻦ ا ﺴــﺘ ﺤﻴﻞ اﻟﻌﺜــﻮر ﻋﻠﻴﻬــﺎ ﺑــﺄي ﻃﺮﻳﻘﺔ أﺧـﺮى « وﻣـﻦ ﺑـ ﻫـﺬه اﻷﺟﺮام اﻟﻐﺮﻳﺒﺔ اﻟﺜﻘـﻮب اﻟﺴـﻮداء اﻷﺟﺮام اﻟﻐﺮﻳﺒﺔ اﻟﺜﻘـﻮب اﻟﺴـﻮداء ا ﻨﺠﻤﻴـﺔ اﻟﺘﻲ ﺗﺘﺸﻜﻞ ﺑﻌﺪ ﻣﻮت أﻛﺜـﺮ اﻟﻨﺠـﻮم ﻛﺘﻠـﺔ . وﻳﻌﺘﻘﺪ ﻋﻠﻤﺎء اﻟﻔﻠﻚ أن ﻣﺠـﺮة درب اﻟﺘﺒﺎﻧـﺔ ﺗﺤﺘﻮي ﻋﲆ ﻧﺤـﻮ ١٠٠ ﻣﻠﻴـﻮن ﺛﻘـﺐ أﺳـﻮد ﻧﺠﻤﻲ، إﻻ أﻧﻬﻢ ﺣﺘﻰ اﻵن ﻟـﻢ ﻳﺘﻤﻜﻨـﻮا ﻣـﻦ ﺗﺤﺘﻮي ﻋﲆ ﻧﺤـﻮ 100 ﻣﻠﻴـﻮن ﺛﻘـﺐ أﺳـﻮد ﻧﺠﻤﻲ إﻻ أﻧﻬﻢ ﺣﺘـﻰ اﻵن ﻟـﻢ ﻳﺘﻤﻜﻨـﻮا ﻣـﻦ اﻛﺘﺸﺎف ﻫﺬه اﻷﺟﺮام ﻏ ا ﺮﺋﻴـ ﺔ إﻻ ﻋﻨـﺪﻣﺎ ﺗﺘﻔﺎﻋﻞ ﻣـﻊ ﻧﺠـﻢ ﻣﺮاﻓـﻖ ﺑﻴﻨﻤـﺎ ﻳﻌﺘﻘـﺪ أن ﻣﻌﻈﻤﻬﺎ ﻳﺘﺠﻮل ﻣﻨﻔـﺮد اً ﰲ أرﺟـﺎء ا ﺠـﺮة . وﺳﻴﺘﻤﻜﻦ ﺗﻠﺴﻜﻮب روﻣـﺎن ﻣـﻦ اﻛﺘﺸـﺎﻓﻬﺎ ﺣﺘﻰ ﻋﻨ ﺪﻣﺎ ﻻ ﻳﻜﻮن ﻫﻨـﺎك أي ﺟـﺮم ﻗﺮﻳـﺐ ﻳﻜﺸﻒ ﻋ ﻦ وﺟﻮدﻫﺎ وﰲ ﺣ ﺗﺴﺘﻤﺮ أﺣـﺪاث ﻋﺪﺳـﺔ اﻟﺠﺎذﺑﻴ ـﺔ اﻟ ﺼـﻐﺮى اﻟﻨﺎﺗﺠــﺔ ﻋـﻦ اﻟﻜﻮاﻛﺐ ﻋﺎدة ﻟﺴﺎﻋﺎت أو أﻳﺎم ﻓﺈن اﻟﺜﻘـﻮب اﻟﺴﻮداء ﺗﻤﺘﻠﻚ ﻛﺘﻠﺔ ﻫﺎﺋﻠﺔ ﺗﺠﻌﻠﻬﺎ ﻗﺎدرة ﻋﲆ ﺛﻨﻲ اﻟﻀﻮء ﻋﱪ ﻣﻨﻄﻘﺔ أﻛـﱪ ﻣـﻦ اﻟﻔﻀـﺎء ﻓﺘﻨﺘ ﺞ إﺷﺎرات ﺗﺪوم ﻟﻔـﱰات أﻃـﻮل ﺑﻜﺜـ وﻫﺬا ﻳﻌﻨ ﻲ أن ﻋﻠﻤﺎء اﻟﻔﻠﻚ ﻗﺪ ﻳﺤﺘـﺎﺟﻮن إﱃ ﻣﺮاﻗﺒﺘﻬﺎ ﻟﺴﻨﻮات ﺣﺘﻰ ﻳـﺮوا اﻟﺠـﺮم ﻳﺒﺘﻌـﺪ ﺎً ﺠﻴ ﺗﺪرﻳ ﻋﻦ ﺣﺎﻟﺔ اﻻﺻﻄﻔﺎف . ﻗﺎل ﻫﻴﻤﺎﻧﺸﻮ ﻓ ﻣﺎ اﻟﺒﺎﺣـﺚ ﰲ ﻣﺮﺣﻠـﺔ ﻣـﺎ ﺑﻌﺪ اﻟﺪﻛﺘﻮراه ﺑﺠﺎﻣﻌﺔ وﻻﻳﺔ ﻟﻮﻳﺰﻳﺎﻧﺎ واﻟـﺬي ﻳﻌﻤﻞ ﻋﲆ ﺗﺤﻠﻴﻞ ﺻـﻮر ﺗﻠﺴـﻜﻮب إﻗﻠﻴـﺪس ﺴﺎ ﻋﺪة اﻟﻌﻠﻤﺎء ﻋﲆ اﻟﺘﻨﺒﺆ ﺑﺄﺣـﺪاث ﻋﺪﺳـﺔ اﻟﺠﺎذﺑﻴﺔ اﻟ ﺼﻐﺮى اﻟﺘﻲ ﺳ ﺻﺪﻫﺎ ﺗﻠﺴﻜﻮب روﻣﺎن وﻓﻬﻤﻬﺎ ﺑﺼﻮرة أﻓﻀﻞ :» إن اﻟﻌـﺎﻣ اﻹﺿﺎﻓﻴ اﻟﻠﺬﻳﻦ ﻳﻮﻓﺮﻫﻤﺎ ﺗﻠﺴﻜﻮب إﻗﻠﻴﺪس ﻳﻤﻨﺤﺎن ﻋﻠﻤﺎء اﻟﻔﻠـﻚ وﻗﺘـ ﺎً أﻃـﻮل ﺘﺎﺑﻌـﺔ اﺑﺘﻌﺎد ﻋﺪﺳﺔ اﻟﺠﺎذﺑﻴﺔ واﻟﻨﺠﻢ اﻟﺨﻠﻔـﻲ ﻋـﻦ ﺑﻌﻀﻬﻤﺎ ﻣﻤﺎ ﻳﺴﻬﻞ ﺗﺤﺪﻳﺪ اﻟﺠﺴـﻢ ا ﺴـﺒﺐ ﻟﻠﻌﺪﺳﺔ وﻗﻴﺎس ﻛﺘﻠﺘﻪ « وﰲ ﺣـ أن ﻣﻌﻈـﻢ ﻃﺮق ا ﻟﺒﺤﺚ ﻋﻦ اﻟﻜﻮاﻛﺐ ﺗﻜﻮن أﻛﺜﺮ ﻛﻔـﺎءة ﰲ ا ﻛﺘﺸﺎف اﻟﻜﻮاﻛﺐ اﻟﺤﺎرة اﻟﻘﺮﻳﺒﺔ ﺟﺪ اً ﻣﻦ ﻧﺠﻮﻣﻬـﺎ ﻓـﺈن ﻋﺪﺳـﺔ اﻟ ﺠﺎذﺑﻴــﺔ اﻟ ﺼـﻐﺮى ﺗﺘﻔﻮق ﰲ اﻛﺘﺸﺎف اﻟﻜﻮاﻛـﺐ اﻟﺘـﻲ ﺗـﺪور ﰲ ﻣﺪارات أﺑﻌﺪ ﻣﻦ ﻣﺪار اﻷرض . وﻳﺸـﻤﻞ ذﻟـﻚ ﻣﺪارات أﺑﻌﺪ ﻣﻦ ﻣـﺪار اﻷرض وﻳﺸـﻤﻞ ذﻟـﻚ اﻟﻜﻮاﻛـﺐ اﻟﺘـﻲ ﺗـﺪور ﺣـﻮل ﻧﺠﻮﻣﻬـﺎ ﻋـﲆ ﻣﺴﺎ ﻓﺎت ﺗﺘﺠﺎوز ﻣﺪار ﻧﺒﺘﻮن ﺣﻮل اﻟﺸـﻤﺲ وﻛﺬﻟﻚ اﻟﻜﻮاﻛﺐ اﻟﺘﻲ ﻃـ ﺮدت ﻣـﻦ أﻧﻈﻤﺘﻬـﺎ اﻟﻨﺠﻤﻴﺔ اﻷﺻﻠﻴﺔ وأﺻﺒﺤﺖ ﺗﺘﺠﻮل ﻣﻨﻔﺮد ة ﰲ أﻧﺤﺎء ا ﺠﺮة . ﻗﺎل دﻳﻔﻴ ﺪ ﺑﻴﻨﻴﺖ ﻛﺒـ ﻋﻠﻤـﺎء اﻷﺑﺤﺎث وﺧﺒ ﻋﺪﺳﺔ اﻟﺠﺎذﺑﻴﺔ اﻟ ﰲ ﺼـﻐﺮى ﺟﺎﻣﻌﺔ ﻣ ﻳﻼﻧـﺪ وﻣﺮﻛـﺰ ﺟـﻮدارد ﻟـﺮﺣﻼت اﻟﻔﻀـﺎء اﻟﺘـﺎﺑﻊ ﻟﻨﺎﺳـﺎ :» ﻋﻨـﺪﻣﺎ ﻳﻜﺘﺸـﻒ ﺗﻠﺴﻜﻮب روﻣﺎن ﻫﺬه اﻷﺟﺮام ﺳﻴﺘﻤﻜﻦ ﻋﻠﻤﺎء اﻟﻔﻠﻚ ﻣﻦ ﻣﻘﺎرﻧﺔ ﺑﻴﺎﻧﺎﺗﻪ ﻣﻊ أرﺻﺎد ﺗﻠﺴﻜﻮب إﻗﻠﻴﺪس اﻟﺴﺎﺑﻘﺔ ﻟﻠﺒﺤﺚ ﻋﻦ ﻧ ﺠ ﻮم ﻗﺮﻳﺒﺔ ﻣﻦ اﻟﺠ ﺮ م ا ﺴﺒﺐ ﻟﻌﺪﺳﺔ اﻟﺠﺎذﺑﻴﺔ وﺑﺬﻟﻚ ﻳﻤﻜﻨﻨﺎ اﻟﺘﺄﻛﺪ ﻣﻤﺎ إذا ﻛﺎن اﻟﻜﻮﻛﺐ ﺗﺎﺋﻬ ﺎً ﺑﺎﻟﻔﻌـﻞ أم أﻧﻪ ﻻ ﻳﺰال ﻳﺪو ر ﺣﻮل ﻧﺠﻤﻪ وﻟﻜـﻦ ﰲ ﻣـﺪار ﺑﻌﻴﺪ ﺟﺪ . «اً ﺳﻴﻘﺪم ﻫﺬا اﻟﱪﻧـﺎﻣﺞ اﻟﺮﺻـﺪي ﺻﻮرة ﺠﺮﺗﻨﺎ ﺑﺘﻔﺎﺻﻴﻞ ﻏ ﻣﺴـﺒﻮﻗﺔ ﻋـﲆ ﻣﺴﺎﺣﺔ ﺗﺰﻳﺪ ﺑﻨﺤﻮ 400 ﻣـ ﺮة ﻋـﻦ ﻣﺴـﺎﺣﺔ ﻣﺴﺢ ﻟﻠﱪوز ا ﺠﺮي وﺧﻼل ﺷ ﻬﺮ واﺣﺪ ﻣـﻦ اﻟﺮﺻﺪ ﻣﻮزع ﻋﲆ ﻋﺎﻣ ﺳﻴﻜﺸﻒ ﻫﺬا ا ﺴﺢ ﻋﻦ ﻋﴩات ا ﻠﻴﺎرات ﻣﻦ اﻟﻨﺠﻮم وﺳـﻴﺪ رس ﺗﺮاﻛﻴﺐ ﻣﺠﺮﻳﺔ ﻟﻢ ﺗُﺮﺻﺪ ﻣﻦ ﻗﺒﻞ وﺳﻴﺴـﻤﺢ اﻟﺠﻤﻊ ﺑ أرﺻﺎد إﻗﻠﻴﺪس وروﻣـﺎن ﻟﻌﻠﻤـﺎء اﻟﻔﻠﻚ ﺑﻤﺘﺎﺑﻌﺔ ا ﻟﺤﺮﻛﺔ اﻟﺒﻄﻴﺌﺔ ﻟﻠﻨﺠﻮم ﻋـﱪ اﻟﺴﻤﺎء وﺑﻤﺎ أن اﻟﻨﺠـﻮم ا ﻮﺟـﻮدة ﰲ أﺟـﺰاء ﻣﺨﺘﻠﻔﺔ ﻣﻦ درب اﻟﺘﺒﺎﻧﺔ ﺗﺘﺤﺮك ﰲ ﻣﺴـﺎرات ﻣﺨﺘﻠﻔﺔ ﻓﺴﻴﺴﺎﻋﺪ ذﻟﻚ اﻟﻌﻠﻤﺎء ﻋـﲆ ﺗﺤﺪﻳـﺪ اﻟﺠﺰء اﻟﺬي ﺗﻨﺘﻤﻲ إﻟﻴـﻪ ﺗﻠـﻚ اﻟﻨﺠـﻮم داﺧـﻞ ا ﺠﺮة . ﻗﺎل ﻣﺎﺛﻴﻮ ﺑﻴﻨﻲ :» ﻣﻦ أﻛﺜﺮ اﻟﺠﻮاﻧﺐ إﺛﺎرة ﰲ أرﺻﺎد إﻗﻠﻴﺪس أﻧﻬﺎ ﺗﻤﻨﺤﻨﺎ ﻓﺮﺻـﺔ ﻻﺧﺘﺒـﺎر ﻧﻤﺎذج ﻣﺠﺮة درب اﻟﺘﺒﺎﻧﺔ وﺗ .« ﺤﺴﻴﻨﻬﺎ رﻏﻢ أن إﻗﻠﻴﺪس ﺧﺼﺺ ﻳﻮﻣ ﺪاً ﺣـوا ﺎً ﻓﻘـﻂ ﻟﻬﺬه ا ﻬﻤﺔ اﻻﺳﺘﺜﻨﺎﺋﻴﺔ ﻓﺈن اﻟﻌﺎﺋـﺪ اﻟﻌﻠﻤـﻲ ﻣﻨﻬـﺎ ﺳﻴﺴـﺘﻤﺮ ﻟﺴـﻨﻮات، وﻳُﻈﻬـﺮ ﻣﻘـﺪار اﻹﻧﺠﺎزات اﻟﺘﻲ ﻳﻤﻜﻦ ﺗ ﺤﻘﻴﻘﻬﺎ ﻋﻨﺪﻣﺎ ﺗﻌﻤـﻞ اﻟﺘﻠﺴﻜﻮﺑﺎت ﻣﻌ . ﺎً اﺧﺘﺘﻢ ﺟﻴﺴﻮن رودس ﻗﺎﺋﻼً :» ﻟﻘﺪ أﺛﺒﺘﻨـﺎ أن ﻫﺬﻳﻦ اﻟﺘﻠﺴﻜﻮﺑ ﻗﺎدران ﻋـﲆ اﻟﻌﻤـﻞ ﻣﻌـ ﺎً ﻹﻧﺠﺎز ﻋﻠﻮم ﺗﺘﺠﺎوز ﻣـﺎ ﺻُـﻤﻢ ﻛـﻞ ﻣﻨﻬﻤـﺎ ﻟ ﺘﺤﻘﻴﻘﻪ ﻣﻨﻔـﺮد اً وﺑـﺬﻟﻚ وﺿـﻌﻨﺎ ﻧﻤﻮذﺟـ ﺎً ﻟﻠﺮﺻﺪ ا ﻨﺴﻖ ﻳﻤﻜﻨﻪ أن ﻳﻔـﺘﺢ اﻟﺒـﺎب أﻣـﺎم اﻛﺘﺸﺎﻓﺎت ﺗﻔﻮق ﺑﻜﺜ ﻣﺎ ﺗﺴﺘﻄﻴﻊ أي ﻣـﻦ ا ﻬﻤﺘ ﺗﺤﻘﻴﻘﻪ ﺑﻤﻔﺮدﻫﺎ . ﺗﻘـﺪم ــﺔ ـﺪس اﻟﺘــﺎﺑﻊ ﻟﻮ ﺎﻟــﺔ اﻟﻔﻀــﺎء اﻷوروﺑ ﻫـﺬﻩ اﻟﺼـﻮرة اﻟﻤﻠﺘﻘﻄــﺔ ﺑﻮاﺳــﻄﺔ ﺗﻠﺴـ ﻮب إﻗﻠ ) ﻣـــﻊ إﺿــــﺎﻓﺔ ا ﻷﻟـــﻮان ﺎﺳــــﺘﺨﺪامﺻـــﻮر أرﺿــــ ﺔ ( ﻟﻘﻄـــﺔ ﻣ ﻜــــﺮة ﻟﻤﻨﻄﻘـــﺔ ﻣــــﻦ ﻣﺠﺮﻨـــﺎ ﺳ ﺻــــﺪﻫﺎ ﺗﻠﺴـ ﻮب ﻧﺎﻧﺴــﻲﻏـﺮﺲروﻣــﺎن اﻟﻔﻀــﺎﺋﻲ اﻟﺘــﺎﺑﻊ ﻟﻨﺎﺳــﺎ ﺸـ ﻞ ﻣﺘﻜـﺮرﺧــﻼل اﻟﺴــﻨﻮات اﻟﻘﺎدﻣــﺔ . أﻣﻀــﻰ ﺗﻠﺴــ ﻮب ــﺪس ﻳﻮﻣــﺎً إﻗﻠ واﺣــﺪاً ﻓــﻲ اﻟﺘﻘــﺎطﺳﻠﺴــﻠﺔ ﻣــﻦ ﺗﺴــﻊ ﺻـﻮر ــﺎﻟﻘﺮ ﻣــﻦ ﻣﺮﻛــﺰ ﻣﺠﺮة در اﻟﺘ ﺎﻧﺔ . ﺗﺘﻤ ﺻﻮرﮫ اﻷوﺳﻊ ﺪ ﻗﺔ ﻣﻤﺎﺛﻠﺔ ﻟﺪﻗﺔ ﺻﻮرة ﺗﻠﺴ ﻮب روﻣﺎن ﻋﻠـﻰ اﻟـﺮﻏﻢ ﻣﻦ أﻧﻬﺎ أﻗﻞ ﻋﻤﻘﺎً وﺗﻔﺘﻘﺮ إﻟﻰ ﻌﺾ اﻷﻟ ﺳ اﻫﺎ ﻮان اﻟ ﺗﻠﺴـ ﻮب روﻣـﺎن . ﻋﻠـﻰ ﺴـﺎر اﻹﻃـﺎر ﻨﻈﺮ ﺗﻠﺴ ﻮب إﻗﻠ ﺪسﻋ اﻟﻤﻘﺪﻣﺔ اﻟﻜﺜ ﻔﺔ ﻟﻤﺴﺘﻮىﻣﺠﺮة ـﺚ ﺗﻈﻬـﺮ اﻟﺴـﺤﺐ در اﻟﺘ ﺎﻧـﺔ ﺣ اﻟـــﺠﺰ ﺌ ﺔ اﻟﺴــﻤ ﻜﺔ ﻋﻠـﻰﺷـ ﻞ ﻘــﻊ داﻛﻨــﺔ ﺗﺤﺠــﺐ أﺟـﺰاء ﻣــﻦ ﺑـﺮوز اﻟﻤﺠـﺮة . ﻳﺮﻔــﻊ ﺎﺗﺠــﺎﻩ اﻟ ﻤــ اﻟﻤﺸـﻬﺪ إﻟـﻰﺧﻄـﻮطﻋـﺮضٍ ﻣﺠﺮ ـﺔ أﻋﻠـﻰ : ﺼـﺒﺢ اﻟﺘـﻮﻫﺞ اﻷﺻـﻔﺮ ﻟﻠـ وز أﻛـ وﺿـﻮﺣﺎً ﻣـﻊ ﻋـﺪد أﻗﻞ ﻣﻦ اﻟﺴﺤﺐ اﻷﻣﺎﻣ ﺔ اﻟﻤﻌﺰوﻟﺔ اﻟ ﺗﻌ ض ﺿﻮء اﻟﻨﺠﻮم . [ESA/Euclid/Euclid Consortium/NASA, CFHT,image processing by J.- C. Cuillandre and E. Bertin (CEA Paris-Saclay)] - ﺳﺒﺘﻤﺒﺮ ﺃﻛﺘﻮﺑﺮ 2 0 2 6