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Listen mate, if you're going to be a grammar nazi, you'd better learn to construct a sentence. It should be "Learn to use punctuation marks please, thank you".
Now having said that you have broken two of the T&C with your post, and chances are English isn't the OP's first language. I will politely suggest you think before you post.
Originally posted by eaganthorn
I may very well be far off base here, but didn't NASA at one time have a mission statement that said something addressing non terrestrial hazards or threats? I seem to recall something like that, but perhaps I am incorrectly paraphrasing.
If true, what does it imply?
Microbes Gain Strength in Space
The salmonella experiment was flown aboard NASA's space shuttle mission STS-115.
Space flight has been shown to have a profound impact on human physiology as the body adapts to zero-gravity environments. Now, a new study led by researchers from ASU’s Biodesign Institute has shown that the tiniest passengers flown in space – microbes – can be equally affected by space flight, making them more infectious pathogens.
“Space flight alters cellular and physiological responses in astronauts, including the immune response,” says Cheryl Nickerson, who led a project aboard NASA’s space shuttle mission STS-115 (September 2006) involving an international collaboration between NASA, ASU and 12 other research institutions. “However, relatively little was known about microbial changes to infectious disease risk in response to space flight.”
Nickerson and lead author James Wilson, professors in ASU’s School of Life Sciences, have performed the first study of its kind to investigate the effect of space flight on the genetic responses and disease-causing potential, or virulence, of Salmonella typhimurium, the main bacterial culprit of food poisoning. Their results, published in the journal Proceedings of the National Academy of Sciences, reveal a key role for a master regulator, called Hfq, in triggering the genetic changes that show an increase in the virulence of salmonella as a result of space flight.
The results of these studies hold potential to greatly advance infectious disease research in space and on Earth, and could lead to the development of new therapeutics to treat and prevent infectious disease.
To study the effects of space flight, Nickerson and colleagues sent specially contained tubes of salmonella in an experimental payload aboard the space shuttle Atlantis. The tubes of bacteria were placed in triple containment for safety, and posed no threat to the health and safety of the crew.
By: Leslie Mullen
When diseases cross the species barrier and infect humans, they dominate news headlines. Just imagine, then, the reaction if potentially infectious pathogens were found in rock samples from Mars.
As we look toward exploring other worlds, and perhaps even bringing samples back to Earth for testing, astrobiologists have to wonder: could alien pathogens cross the "planet" barrier and wreak havoc on our world?
Even though there is no proof of bacterial or viral pathogens anywhere except Earth, there is already a worried advocacy group called the International Committee Against Martian Sample Return, and science fiction novels like "The Andromeda Strain" depict nightmare alien infection scenarios. The possibility of cross-planetary contamination has concerned NASA since the early days of the Apollo program, so, as a precaution, the astronauts were quarantined for three weeks after they left the moon.
Originally posted by internos
Compared to bacteria that remained on Earth, the space-traveling salmonella had changed expression of 167 genes. After the flight, animal virulence studies showed that bacteria that were flown in space were almost three times as likely to cause disease when compared with control bacteria grown on the ground.
Originally posted by Hello123456
we arent looking for the UFOS we are looking for the IFOS which are Alien