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Bacteria in spaeships
NASA got a bad day some weeks ago.
A microbiologist discovered that Acetinobacter can eat the desinfectant that NASA sprays in their clean rooms... A soil bacteria. Now, NASA is selecting the hardest microbes to send to space... All other normal microbes are dead, and Actetinobacter has no competition. Arrived to destination (say Mars) Acetinobacter could be devasting for a local biota. Since it is extremely resistant, it could spread unchecked. Is it a good idea to desinfect spaceships? Or it would be better to have as much as possible of weak, normal bacteria that are surely dead if confronted to space? Or coat the spaceships with very fragile bacteria that would prevent Acetinobacter to thrive and would be immediately dead in space? What is important is that in space no earth bacteria survive unchecked. |
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Bacteria in spaeships
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#3
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Bacteria in spaeships
Le 24/06/2018 Ã* 16:41, Jeff Findley a écritÂ*:
In article , says... NASA got a bad day some weeks ago. A microbiologist discovered that Acetinobacter can eat the desinfectant that NASA sprays in their clean rooms... A soil bacteria. Now, NASA is selecting the hardest microbes to send to space... All other normal microbes are dead, and Actetinobacter has no competition. Arrived to destination (say Mars) Acetinobacter could be devasting for a local biota. Since it is extremely resistant, it could spread unchecked. There is zero proof that Mars has actual living "local biota". What? NASA has disclosed the presence of organics in Mars. Furthermore the methane cycle has seasonal variations and points to local biota that is breathing. Apparently, mars organics ad life look similar to earth's life. A microbiologist published comparisons between fossil looking formations in Mars and earthly, older microbial formations that look VERY similar to those mars "rocks"... All this evidence points to life in Mars. Furthermore, I am unaware of any earth microbes which would "thrive" in the extremely thin atmosphere and radiation environment of Mars. NASA selects those bacteria by killing all others and leaving them a space where they find no competition for nutrients and space. All other bacteria are dead. Is it a good idea to desinfect spaceships? If you want the crew on the inside to stay healthy, yes. There is zero proof that a Mars-able ship is doable with today's technology. No prototypes have been ever constructed, and Americans aren't able to return to the moon any more. They speak a lot about Mars, and send regularly machines to that planet. Otherwise it's like locking them inside a dank basement for the duration of the trip and hoping they don't get sick. There is the radiation problem. No atmosphere and no planetary magnetic field leave the crew unshielded in space, that is full of harmful radiation. The crew is in a suicide mission with today's technology. Or it would be better to have as much as possible of weak, normal bacteria that are surely dead if confronted to space? Or coat the spaceships with very fragile bacteria that would prevent Acetinobacter to thrive and would be immediately dead in space? What is important is that in space no earth bacteria survive unchecked. Inside ISS, where they try to combat microbes for the health of the crew, is not the same as outside ISS in vacuum. Inside the spacecraft is also not the same as outside in the very thin atmosphere of Mars. Of course. I am speaking of unmanned machines, since, as I said above, no humans have ever attempted to cross that void. Of course I was trying to discuss from a scientific point of view, and I know science is not well seen in some american circles, in a country without a science advisor since more than a year. Jeff |
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Bacteria in spaeships
jacob navia wrote on Sun, 24 Jun 2018
23:36:22 +0200: Le 24/06/2018 à 16:41, Jeff Findley a écrit*: In article , says... NASA got a bad day some weeks ago. A microbiologist discovered that Acetinobacter can eat the desinfectant that NASA sprays in their clean rooms... A soil bacteria. Now, NASA is selecting the hardest microbes to send to space... All other normal microbes are dead, and Actetinobacter has no competition. Arrived to destination (say Mars) Acetinobacter could be devasting for a local biota. Since it is extremely resistant, it could spread unchecked. There is zero proof that Mars has actual living "local biota". What? What he said. Go read it again. NASA has disclosed the presence of organics in Mars. Which PROVES nothing. Furthermore the methane cycle has seasonal variations and points to local biota that is breathing. Well, no. Apparently, mars organics ad life look similar to earth's life. A microbiologist published comparisons between fossil looking formations in Mars and earthly, older microbial formations that look VERY similar to those mars "rocks"... Another 'no'. All this evidence points to life in Mars. COULD point to life. Which part of the word "proof" is it that is eluding you? Furthermore, I am unaware of any earth microbes which would "thrive" in the extremely thin atmosphere and radiation environment of Mars. NASA selects those bacteria by killing all others and leaving them a space where they find no competition for nutrients and space. All other bacteria are dead. So your argument is that we need to protect a biota that doesn't exist (because if it did there wouldn't be "no competition")? Is it a good idea to desinfect spaceships? If you want the crew on the inside to stay healthy, yes. There is zero proof that a Mars-able ship is doable with today's technology. No prototypes have been ever constructed, and Americans aren't able to return to the moon any more. But there is better evidence for that than there is for life on Mars. They speak a lot about Mars, and send regularly machines to that planet. Yes, they do. If men aren't going, let's stop wasting that money. Otherwise it's like locking them inside a dank basement for the duration of the trip and hoping they don't get sick. There is the radiation problem. No atmosphere and no planetary magnetic field leave the crew unshielded in space, that is full of harmful radiation. The crew is in a suicide mission with today's technology. False. Or it would be better to have as much as possible of weak, normal bacteria that are surely dead if confronted to space? Or coat the spaceships with very fragile bacteria that would prevent Acetinobacter to thrive and would be immediately dead in space? What is important is that in space no earth bacteria survive unchecked. Inside ISS, where they try to combat microbes for the health of the crew, is not the same as outside ISS in vacuum. Inside the spacecraft is also not the same as outside in the very thin atmosphere of Mars. Of course. I am speaking of unmanned machines, since, as I said above, no humans have ever attempted to cross that void. Then you need to learn to formulate your ideas more clearly. Of course I was trying to discuss from a scientific point of view, and I know science is not well seen in some american circles, in a country without a science advisor since more than a year. Gee, **** you very much, too. You might want to look to where all the Nobel prizes go, Mr Scientist. -- "Ignorance is preferable to error, and he is less remote from the truth who believes nothing than he who believes what is wrong." -- Thomas Jefferson |
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Bacteria in spaeships
What are we going to do about preventing Earth bacteria
from contamenating Mars biota when we set foot on Mars? A microbiologist discovered that Acetinobacter can eat the desinfectant that NASA sprays in their clean rooms... A soil bacteria. Now, NASA is selecting the hardest microbes to send to space... All other normal microbes are dead, and Actetinobacter has no competition. Arrived to destination (say Mars) Acetinobacter could be devasting for a local biota. Since it is extremely resistant, it could spread unchecked. Is it a good idea to desinfect spaceships? Or it would be better to have as much as possible of weak, normal bacteria that are surely dead if confronted to space? Or coat the spaceships with very fragile bacteria that would prevent Acetinobacter to thrive and would be immediately dead in space? What is important is that in space no earth bacteria survive unchecked. |
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Bacteria in spaeships
Le 26/06/2018 Ã* 07:26, William Elliot a écritÂ*:
What are we going to do about preventing Earth bacteria from contamenating Mars biota when we set foot on Mars? There is NO WAY to desinfect a human. A human body is a full ecosystem with fungi, bacteria, viruses, and many organisms that live in it using the rests of skin, and secretions to feed themselves. This means that if we send humans we contaminate the planet where we send them. That is why I am against any Mars colonization until it is 100% sure that no organisms live there. Much worst is the fact that humans RETURN to earth, contrary to machines that stay there. If any marsian bugs exist, they could hitch a ride from Mars to Earth with uncalculable consequences. Contamination, of course, goes both ways! |
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Bacteria in spaeships
William Elliot wrote on Mon, 25 Jun 2018 22:26:12
-0700: What are we going to do about preventing Earth bacteria from contamenating Mars biota when we set foot on Mars? What 'Mars biota'? Do you seriously believe that bacteria evolved for Earth conditions are going to out-compete stuff that evolved for the conditions that exist on Mars? -- "Some people get lost in thought because it's such unfamiliar territory." --G. Behn |
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Bacteria in spaeships
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Bacteria in spaeships
On Tue, 26 Jun 2018, Jeff Findley wrote:
What are we going to do about preventing Earth bacteria from contamenating Mars biota when we set foot on Mars? You're assuming that there is an actual living Mars biota. This has not been proven. There are signs that Mars may have had life in the distant past, but we do not have any definitive evidence that proves life exists on Mars today. Isn't my assumption. It's NASA's. |
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