\n<\/p>\n
G\u00fcne\u015f Sistemi\u2019nin bilinmeyen bir k\u00f6\u015fesinde, hen\u00fcz ke\u015ffedilmemi\u015f dev bir gezegenin varl\u0131\u011f\u0131na dair tart\u0131\u015fmalar bir kez daha alevlendi.<\/p>\n
Science Alert’da yer alan habere g\u00f6re,\u00a0 \u201cDokuzuncu Gezegen\u201d olarak adland\u0131r\u0131lan bu varsay\u0131msal g\u00f6k cismi, baz\u0131 astronomlara g\u00f6re, Kuiper Ku\u015fa\u011f\u0131\u2019ndaki d\u00fczensiz y\u00f6r\u00fcnge hareketlerinin arkas\u0131ndaki gizli g\u00fc\u00e7 olabilir.<\/p>\n
Bu fikir ilk kez 1930\u2019larda, Uran\u00fcs\u2019\u00fcn y\u00f6r\u00fcngesindeki sapmalar g\u00f6zlemlendi\u011finde ortaya at\u0131lm\u0131\u015ft\u0131. O d\u00f6nemde \u201cX Gezegeni\u201d ad\u0131yla an\u0131lan bu bilinmeyen nesne, Pl\u00fcton\u2019un ke\u015ffiyle k\u0131smen a\u00e7\u0131klanm\u0131\u015f, ancak y\u0131llar sonra Nept\u00fcn\u2019\u00fcn k\u00fctlesinin yeniden hesaplanmas\u0131yla ge\u00e7ersiz say\u0131lm\u0131\u015ft\u0131.<\/p>\n
KUP\u0130ER KU\u015eA\u011eI’NDAK\u0130 G\u0130ZEML\u0130 HAREKETLER\u00a0<\/strong><\/p>\n 2016 y\u0131l\u0131nda Caltech\u2019ten astronomlar Konstantin Batygin ve Mike Brown, bu eski varsay\u0131m\u0131 yeniden canland\u0131rd\u0131. Nept\u00fcn\u2019\u00fcn \u00f6tesindeki Kuiper Ku\u015fa\u011f\u0131\u2019nda yer alan cisimlerin y\u00f6r\u00fcngelerinin beklenmedik bi\u00e7imde hizalanmas\u0131, sistemde g\u00f6r\u00fcnmeyen b\u00fcy\u00fck bir g\u00f6k cisminin varl\u0131\u011f\u0131na i\u015faret ediyor olabilir.<\/p>\n T\u0131pk\u0131 D\u00fcnya\u2019n\u0131n Ay \u00fczerinde yaratt\u0131\u011f\u0131 \u00e7ekim etkisi gibi, bu bilinmeyen k\u00fctlenin de k\u00fc\u00e7\u00fck cisimlerin y\u00f6r\u00fcngelerini bozdu\u011fu d\u00fc\u015f\u00fcn\u00fcl\u00fcyor. Batygin ve Brown\u2019a g\u00f6re bu etki, yaln\u0131zca \u00e7ok b\u00fcy\u00fck \u2013 belki de D\u00fcnya\u2019n\u0131n 5 ila 10 kat\u0131 k\u00fctlede \u2013 bir gezegenle a\u00e7\u0131klanabilir.<\/p>\n G\u00d6ZLEMLER NE D\u0130YOR?\u00a0<\/strong><\/p>\n \u0130lk etapta \u015f\u00fcpheyle yakla\u015f\u0131lan teori, y\u0131llar i\u00e7inde giderek artan g\u00f6zlemsel destek buldu. Kuiper Ku\u015fa\u011f\u0131\u2019ndaki baz\u0131 cisimlerin benzer bi\u00e7imde e\u011fik ve uzam\u0131\u015f y\u00f6r\u00fcngelere sahip olmas\u0131, bu sapmalar\u0131n rastlant\u0131 olmad\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnd\u00fcr\u00fcyor. Mike Brown, 2024 y\u0131l\u0131nda yapt\u0131\u011f\u0131 bir a\u00e7\u0131klamada, \u201cDokuzuncu Gezegen\u2019in var olmama ihtimali \u00e7ok d\u00fc\u015f\u00fck,\u201d diyerek bu g\u00f6r\u00fc\u015f\u00fcn\u00fc peki\u015ftirdi.<\/p>\n KAR\u015eI \u00c7IKANLAR DA VAR\u00a0<\/strong><\/p>\n Elbette bilim d\u00fcnyas\u0131nda bu hipoteze kar\u015f\u0131 \u00e7\u0131kanlar da mevcut. En temel soru: \u201cE\u011fer b\u00f6yle bir gezegen varsa, neden hala g\u00f6zlemlenemedi?\u201d Baz\u0131 ara\u015ft\u0131rmac\u0131lar, eldeki verilerin hen\u00fcz yeterli olmad\u0131\u011f\u0131n\u0131 savunurken, baz\u0131lar\u0131 da Kuiper Ku\u015fa\u011f\u0131\u2019ndaki sapmalar\u0131n, k\u00fc\u00e7\u00fck bir kara delik ya da geni\u015f bir enkaz halkas\u0131 gibi farkl\u0131 k\u00fctle\u00e7ekim kaynaklar\u0131ndan kaynaklanabilece\u011fini \u00f6ne s\u00fcr\u00fcyor.<\/p>\n EN B\u00dcY\u00dcK ENGEL: ZAMAN\u00a0<\/strong><\/p>\n Dokuzuncu Gezegen teorisinin \u00f6n\u00fcndeki en b\u00fcy\u00fck zorluklardan biri zaman. Kuiper Ku\u015fa\u011f\u0131\u2019ndaki baz\u0131 cisimler, \u00f6rne\u011fin 2017 OF201, G\u00fcne\u015f \u00e7evresindeki bir tam d\u00f6n\u00fc\u015f\u00fcn\u00fc yakla\u015f\u0131k 24 bin y\u0131lda tamaml\u0131yor. Bu kadar uzun y\u00f6r\u00fcnge s\u00fcreleri, g\u00f6zlemlerle anlaml\u0131 sonu\u00e7lara ula\u015fmay\u0131 olduk\u00e7a zorla\u015ft\u0131r\u0131yor.<\/p>\n 2023 y\u0131l\u0131nda ke\u015ffedilen 2023 KQ14 adl\u0131 yeni bir Kuiper cismi ise teoriyi zorlayan bir ba\u015fka veriyi ortaya koydu. Y\u00f6r\u00fcngesinin beklenenden daha kararl\u0131 olmas\u0131, e\u011fer Dokuzuncu Gezegen ger\u00e7ekten varsa bile, onun \u00e7ok daha uzakta muhtemelen G\u00fcne\u015f\u2019ten 500 astronomik birim (AU) mesafede bulunabilece\u011fine i\u015faret ediyor.<\/p>\n<\/div>\n