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NASA - Astrobiology Basin Toplantisi

Sylian

Son yazan: Sylian
yeri: Bilim & Teknik

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Cuce Grand Master

Cuce

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dasaaa said:

said:
arsenik sentezleyen bi zımbırtı varmış onu açıklıcaklarmış

şu gibi açıklamalar arka sırada uyumama sebep oluyor.

hiçbişi anlamıyorsun, ne önemi var diye bakıyorsun.. hiç..

çok sıkıcı.


abi atmosferen aşağı arsenir sentezliyen bi canlı düşse. mesela istanbulun üstünde arsenik sentezlese, suya karışsa falan. mesela
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huun Grand Master

huun

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o arsenik işi yeni değil bildiğim kadarıyla. okyanusun dibinde mağma sızan yerlerde abidik, gubidik şeylerle yaşayan bakteriler bulduklarından beri hayat sağlayan şartlar hakkında zaten bildiklerini sıfırlamışlardı.

özellikle arsenik olmasının bir önemi var mı bilmiyorum.
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LathspeLL Grand Master

LathspeLL

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"NASA finds new life" said:

Hours before their special news conference today, the cat is out of the bag: NASA has discovered a completely new life form that doesn't share the biological building blocks of anything currently living in planet Earth. This changes everything.

At their conference today, NASA scientist Felisa Wolfe Simon will announce that they have found a bacteria whose DNA is completely alien to what we know today. Instead of using phosphorus, the bacteria uses arsenic. All life on Earth is made of six components: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. Every being, from the smallest amoeba to the largest whale, share the same life stream. Our DNA blocks are all the same.

But not this one. This one is completely different. Discovered in the poisonous Mono Lake, California, this bacteria is made of arsenic, something that was thought to be completely impossible. While she and other scientists theorized that this could be possible, this is the first discovery. The implications of this discovery are enormous to our understanding of life itself and the possibility of finding beings in other planets that don't have to be like planet Earth.

No details have been disclosed about the origin or nature of this new life form. We will know more today at 2pm EST but, while this life hasn't been found in another planet, this discovery does indeed change everything we know about biology. I don't know about you, but I've not been so excited about a bacteria since my STD tests came back clean.


http://gizmodo.com/5704158/nasa-finds-new-life


Buda bir yorum:

said:
I'm a microbiologist/ molecular biologist. I am amazed and impressed by this news. However, it's not totally "new life" and it does share most of the building blocks of existing life. What I've read on several articles released today is that the organism discovered is a new strain of a previously known bacterium that can use Arsenic in place of Phosphorous. This is huge news, as Phosphorous is considered one of the essential building blocks of life, and is a key component of DNA and bacterial cell membranes. This strain can live in the absence of Phosphorous, using Arsenic in its place, and survive in high levels of arsenic toxic to most life as we know it. It expands our definition of life and the conditions that can sustain life.
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fede Grand Master

fede

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ne bekliyodunuz olm. velespitli uzaylı bulduk diye açıklama mı bekliyodunuz. şu canlı bildiğin uzaylı lan. meteorun içinde gelmiş işte belli. dünyada oksijenle evrim geçirmeye müsait güzel bir durum varken neden arsenik üretmek için evrim geçirsin hayvan. bildiğin dünya dışı bu
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