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Mars'ta yaşam var mıydı? NASA'nın emek harcamaları neler söylüyor? - HAKANSEYHAN
Amerikan Ulusal Havacılık ve Uzay Dairesi (NASA) Jet Propulsion Laboratory (Jet Tahrik Laboratuvarı) bölümünde çalışmalarını sürdüren bilim insanı Dr. Ümit Yıldız, Mars’taki yaşam izi arama faaliyetlerine ilişkin, “Mars’ta şu anda sıvı su yok fakat yüzey kabuğunun altında buzlu, donmuş suya rastladığımızı rahatça söyleyebiliriz. Daha da altta, hani toprak altı göletler vardır ya, bu şekilde göletleri de bulduk. Kısacası oldukça yaklaşmış durumdayız. Yaşamla ilişkilendirdiğimiz şey de genel anlamda sudur. Su gördüğümüz yerde yaşam olabilir diyebiliriz.” ifadelerini kullandı.
Bursa’da uzay ve havacılık mevzusunda coşku ve farkındalık oluşturmak amacıyla kurulan Gökmen Uzay ve Havacılık Eğitim Merkezi’ni (GUHEM) ziyaret eden Yıldız, AA muhabirine, Türkiye’de son yıllarda bilim merkezleri adına ciddi gelişmelerin bulunduğunu söylemiş oldu.
Yıldız, birçok şehirde bilim merkezleri yapıldığını sadece Bursa’daki GUHEM’in uzay ve havacılık alanında bir tek Türkiye’de değil, dünyadaki sayılı merkezlerden biri bulunduğunu söyledi.
GUHEM’i ziyaret edenlerin merkezden etkilendiğini belirten Yıldız, “Inanırım ki bu evlatların bir kısmı uzay alanına yönelip bir şeyler yapacaklardır. Ben en güzel o kısmı görüyorum. Küçücük evlatları bile şu anda etkilemesi benim için oldukça mühim. Ek olarak buraya daha da destek verilmeli. Türkiye’nin her tarafınca buraya öğrencilerin gelmesini temenni ediyorum.” diye konuştu.
Yıldız, Türkiye Uzay Ajansının çalışmalarına da değinerek, “Bir yol haritası çizilmiş durumda. İlk hedef, 2023’te Ay’a sert iniş, ondan sonrasında da yumuşak iniş yapmak. Takip ettiğim kadarıyla gerçekleşebilme ihtimalini görüyoruz. En azından elimizde bir plan var. Bu plana bakılırsa de bir şeyler devam eder ve başarabiliriz. Madem bir uzay ajansımız var. 5-10 senelik planlardan ziyade oldukça daha uzun soluklu planlamaları şimdiden konuşmamız gerekiyor.” ifadelerini kullandı.
“Mars’ta bir uçan vasıta çalıştıracak seviyemizin bulunduğunu biliyoruz” NASA’nın Mars’a gönderilmiş olduğu “Perseverance” adlı robotun çalışmalarını özetleyen Yıldız, “Minik bir robot değil, bir cip büyüklüğünde. Bunun yanında bir de helikopter gönderildi.” dedi.
Helikopterin beklenenden oldukça daha uzun süre çalıştığını dile getiren Yıldız, şunları kaydetti:
“Buradan şunu görebiliyoruz, artık Mars’ta bir uçan vasıta çalıştıracak seviyemizin bulunduğunu biliyoruz. Perseverance robotunun en büyük amacı orada yaşam bulmaya çalışmak. Yaşam var mı, yok mu bilmiyoruz fakat sıvı suyun bulunduğunu biliyoruz. Milyarlarca yıl ilkin oradaki suyla birlikte bir ihtimal bir yaşam oluşmuştur diye düşünüyoruz. Bir ihtimal bulacağız, bir ihtimal bulamayacağız fakat şu anda bu vasıta araştırmasına devam ediyor. Umuyorum ki kısa sürede güzel bir haber alırız, Mars’ta yaşam bulabiliriz.
Yıldız, Perseverance robotunun geçen şubatta Mars’a iniş yaptığını anımsatarak, o zamandan beri devamlı veri gönderdiğini söylemiş oldu.
Yıldız, sözlerini şu şekilde tamamladı:
“Birkaç yüz bin fotoğraf gönderdi. Mars’ta şu anda sıvı su yok fakat yüzey kabuğunun altında buzlu, donmuş suya rastladığımızı rahatça söyleyebiliriz. Daha da altta, hani toprak altı göletler vardır ya, bu şekilde göletleri de bulduk. Kısacası oldukça yaklaşmış durumdayız. Yaşamla ilişkilendirdiğimiz şey de genel anlamda sudur. Su gördüğümüz yerde yaşam olabilir diyebiliriz. Bir ihtimal buradan bir şey çıkarabiliriz. Eskiden Mars’ta sıvı suyun bulunduğunu da tortul kayalardan anlıyoruz. Oradan kesinlikle su geçmesi gerekiyor ki o taşlar yuvarlak hale gelsin. Uydu fotoğraflarından nehirlerin geçmiş olduğu yolları da biliyoruz.
Demek ki burada eskiden sıvı su var fakat bu suyun ne kadar orada kaldığını bilmiyoruz. Bir ihtimal 50 yıl, bir ihtimal 500 bin yıl kaldı. Mars’ın 4,5 milyar senelik zamanı var. Orada eskiden su bulunduğunu rahatça söyleyebiliriz.”
Başa dön tuşu