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crononauta cleric suspected meteorite find that brought life to Earth

A new study suggests that a meteorite found near the South Pole provides clues to the beginning of life on the planet.

Some believe that meteorites brought indispensable materials for the beginning of life.
A meteorite found in Antarctica would give strength to the argument that life on Earth may have started due to a boost from space, scientists say.

meteorite analysis shows that it is rich in ammonia gas.
contains the element nitrogen, which is found in proteins and DNA that form the basis of life as we know it.



The researchers say that meteorites as they could have come to Earth to provide the ingredients that were needed for life.

Details of the study published by researchers at Arizona State University and the University of California, Santa Cruz, appear in the journal Proceedings of the National Academy of Sciences.
The new study is based on the analysis of about 4 grams of powder extracted from a meteorite called Grave Nunataks 95229, discovered in 1995.

powder was shown to contain large amounts of ammonia, among other substances. Nitrogen



Professor Sandra Pizzarello, director of research said the study "shows that there are asteroids out there that when they became fragmented and meteorites may have arrived on Earth with an attractive mix of components, including a large amount of ammonia ". Meteorites

like that could have supplied Earth enough nitrogen in the right way for the emergence of primitive life forms, he argues.

Previous studies have focused on the meteorite Murchison, who arrived in Australia in 1969 and which was found to be rich in organic compounds.

The teacher says that some of the molecules found there correspond to later times in the history of life.
She believes that these compounds are too complex to have played a role in life on Earth. Asteroid belt

The theory that the earth was fertilized by a comet or asteroid arises partly from the belief that the original Earth could have provided a complete inventory of single molecules necessary for the process led to primitive life.

The suggestion is that the asteroid belt between Mars and Jupiter, far from the heat and pressure of the planets in formation, could have been a better place for that process.
Caroline Smith, an expert in meteorites at the Natural History Museum in London agrees that the important factor in the new study is nitrogen, although he would like to see similar results replicated in other meteorites.

"One of the problems of biology early on the early Earth is that it needs a lot of nitrogen so that all these processes occur prebiological. And of course there is nitrogen in the ammonia.
" Much of the evidence shows that there was not much ammonia on the early Earth, so where did he come? "he asks.

still do not know what specifically what led to life began on Earth. Pizzarello
material has the hypothesis that a meteorite may have interacted with environments on Earth such as volcanoes, but these are assumptions.

"You find these extraterrestrial materials (in meteorites) that have what you need," he says, "but how and when and in what environment and what mechanism does not actually know."







Source: http://noticias.terra.com/noticias/el_meteorito_que_trajo_las_instrucciones_para_la_vida_en_la_tierra/act2726825