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Saturn Give Instructions Earth First Occurrence Universe

A few billion years ago, the Earth's atmosphere is estimated to have been wrapped in fog, as there is in Saturn's moon, Titan, which provides organic matter, which feed the earliest life forms on our planet. Such information researchers.
Some scientists turned to the Titan as an example of how the actual conditions of early Earth's atmosphere.
The researchers believe the atmosphere of Titan, which is filled with organic aerosol particles created when sunlight reacts to methane gas, may offer clues about the climate on Earth when the first primitive organisms appeared 3.6 billion years ago.
Scientists from the University of Colorado Margaret Tolbert and her colleagues conduct laboratory experiments based on the state of Titan's atmosphere measured last year by the Huygens space flight investigations during the mission NASA-European Space Cassini.
They illuminate the methane gas with an ultraviolet lamp, then mixed the carbon dioxide to determine whether conditions there might be billions of years ago in Bumir can produce a similar organic haze.
They found that such a haze formed in the laboratory using various concentrations of methane and carbon dioxide.
Tolbert said the chemical composition of fog is an organic molecule that can be digested by the organisms living today and can provide simple nutrition of living organisms in the past.
"That may have been a source of food for every form of life," Tolbert said in an interview. "And it can be a global food source, which is important. And so life, not confined to certain very special environments, can flourish in every place. "

Provide block
Scientists previously have focused on isolated extreme environment such as hydrothermal channel full of energy and nutrients to understand primordial life.
In addition to merely providing a food source for early life forms, organic haze also may have played a role in providing early building blocks of living organisms that are necessary for the first form, Tolbert said.
The study contained in the "Proceedings of the National Academy of Sciences".
Earth was formed perhaps 4.6 billion years ago and the fluid material contained about 3.8 billion years ago. Tolbert said the kabuet it may have become the dominant form in the landscape of Earth's early atmosphere around the time of the first evidence of life 3.6 billion years ago until the rise of the oxygen content of about 2.3 billion years ago.
Thick fog is not only possible to live organisms, but may also have to protect them from ultraviolet rays berbahaya.Penelitian estimates fog may have placed more than 100 million tons of organic material on Earth's surface each year.
"It's nice to see that trials of early life on Earth to produce so many organic materials," said Carl Pilcher, director of NASA Astrobiologi Institute in California, in a statement.