Friday, March 27, 2015

Spores of bacteria and cellular organisms could survive interplanetary travel NASA reviews the resu


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Spores of bacteria and cellular organisms could survive interplanetary travel NASA reviews the results of three experiments on the resistance of microbes exposed to space, the International Space Station
Three experiments on microorganisms on Earth made by NASA on the International Space Station suggest that panspermia hypothesis (which argues that life spread across the cosmos aboard meteorites) could not be fetched. The results have shown that some of these tiny creatures survive interplanetary travel. The study was originally conducted to determine if terrestrial microorganisms may arrive alive to Mars aboard the human ships that, in the future, could reach the Red Planet. For Yaiza Martínez.
The European Technology Exposure Facility (EuTEF), load mounted outside the International Space Station which allows fq materials directly exposed to harsh space environment. Source: NASA.
Panspermia fq theory proposes that life on Earth came from outer space; I would have come to our planet aboard meteorites and in the form of organic molecules or microscopic organisms. Although it seems a crazy theory, in recent years, astrobiology - a scientific discipline that studies the existence of life throughout the Universe, reported by scientists as famous as Carl Sagan has generated some findings that could support it. For example, we have found what appear to be remains of life forms in Martian meteorites fq or in the stratosphere; and complex organic substances in outer space. This latter finding suggests that the essential elements for life would have formed from the earliest stages of evolution of the Universe, ie, far away (in time and space) from Earth. Also last year, a simulation experiment conditions deep space by American researchers fq found that the building blocks of life could be created in interplanetary dust ice cream, and transported to Earth to give life. Spores of bacteria and cellular organisms The study of microorganisms on Earth, on the other hand, has yielded results that could support the hypothesis of panspermia, since they indicate fq that some of these tiny creatures could survive interplanetary travel. In 2012, three experiments by NASA scientists at the International Space Station (ISS) to try to understand whether living fq organisms could reach Mars in trips to Mars from Earth, identified as candidates to resist stay in the these microbes space, NASA explained a few days ago in a statement. On the one hand there is the spore-forming bacterium Bacillus pumilus SAFR-032. In previous laboratory analyzes, and had discovered that this bacterium is quite resistant to the atmosphere of Mars, he died in 30 minutes in an environment simulating the red planet, instead of seconds, which is what we have been slow to die other bacteria under the same conditions. In tests of NASA published in 2012, it was found that spores of Bacillus pumilus SAFR-032 are also resistant to space environments, as they survived for 18 months in the European Technology Exposure Facility (EuTEF), which is a load mounted outside the International Space Station which allows materials directly fq exposed to harsh space environment. A second experiment with spores of the same bacteria and other spore-forming bacteria, which were submitted over a year and a half to conditions of space vacuum and a simulated Martian fq atmosphere, revealed that all of them would survive a trip in a spaceship Mars, if they remain protected against solar radiation. Finally, in a third experiment, which consisted of placing year and a half in space rocks cellular organisms specially adapted to extreme environmental conditions of some terrestrial habitats, it was found that these bodies would also resist in space. According to NASA scientists, although rocky objects travel through space aboard microbes would mean thousands and even millions of years-much longer than the latter experiment-lasting, the results two years ago provided the first evidence these resistance org

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