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How our immune systems could stop humans reaching Mars.

Discussion in 'Topical Discussions (In Depth)' started by mayhem, Sep 3, 2017.



  1. mayhem

    mayhem Другая перспектива Silver Miner Site Supporter

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    I've always said that God would never allow mankind off this planet. We are to violent to be out there. Someone better tell Musk the con man about this.

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    The human immune system is so weakened by space travel that even a simple virus could prove deadly
    2 SEPTEMBER 2017 • 12:45PM

    The astrophysicist Neil DeGrasse Tyson commented that ‘dinosaurs are extinct today because they lacked the opposable thumbs and brainpower to build a space programme’

    Yet although we now have the technological ability to leave Earth, scientists have found another stumbling block to colonising new worlds - our own immune system.

    Although it is said we are all made of ‘star stuff’ when it comes to travelling away from our home planet humans are far more vulnerable to the rigours of space than our interstellar origins might suggest.

    Billions of years of evolution has effectively backed mankind into a corner of the Solar System that it may be now be tricky to leave.

    A team of scientists from Russia and Canada analysed the effect of microgravity on the protein make-up in blood samples of 18 Russian cosmonauts who lived on the International Space Station for six months.

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    Space can be lethal for astronauts CREDIT: NASA

    They found alarming changes to the immune system, suggesting that they would struggle to shake off even a minor virus, like the common cold.

    “The results showed that in weightlessness, the immune system acts like it does when the body is infected because the human body doesn’t know what to do and tries to turn on all possible defense systems,” said Professor Evgeny Nikolaev, of Moscow Institute of Physics and Technology and the Skolkovo Institute of Science and Technology.

    The effects of spaceflight on the human body have been studied actively since the mid-20th century and it is widely known that microgravity influences metabolism, heat regulation, heart rhythm, muscle tone, bone density, the respiration system.

    Last year research from the US also found that astronauts who travelled into deep space on lunar missions were five times more likely to have died from cardiovascular disease than those who went into low orbit, or never left Earth.

    Astronauts are fitter than the general population and have access to the best medical care, meaning that their health is usually better than the general population. Those of comparable age but who never flew, or only achieved low Earth orbit, had less than a one in 10 chance of death from cardiovascular disease.

    But the chance of death rose to 43 per cent for those who reached the Moon or deep space, probably because of the impact of deadly space radiation.

    However, until now the molecular mechanisms which drive the physiological changes caused by space flights has remained a mystery.

    To gain a deeper understanding of the changes in human physiology during space travel, the research team quantified concentrations of 125 proteins in the blood plasma of cosmonauts.

    Proteins change as the immune system alters and so can be used as a measure of how it is functioning. Blood was taken from the cosmonauts 30 days before they travelled to the ISS and then on their immediate return to Earth. They were also tested seven days after touchdown. Individual proteins were then counted using a mass spectrometer.

    ”When we examined the cosmonauts after their being in space for half a year, their immune system was weakened,” said Dr Irina Larina, the first author of the paper, a member of Laboratory of Ion and Molecular Physics of Moscow Institute of Physics and Technology.

    “They were not protected from the simplest viruses. We need new measures of disorder prevention during a long flight.

    “We must understand the mechanism that causes disorders. If we find the pathways that are affected by the weightlessness, we will be able to find the target for the remedy and we'll be able to offer new pharmaceutical products that will prevent these negative processes."

    The research was published in the journal Nature Scientific Reports.

    http://www.telegraph.co.uk/science/2017/09/02/immune-systems-could-stop-humans-reaching-mars/
     
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  2. gringott

    gringott Killed then Resurrected Midas Member Site Supporter

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    We will have to be able to produce artificial gravity on demand and much, much better shielding from radiation or space travel will be a suicide mission.
     
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  3. brosil

    brosil Gold Member Gold Chaser Site Supporter

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    Man will never be able to travel faster than 35 mph. The wind would rips the lungs out of you.
     
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  4. Mujahideen

    Mujahideen Black Member Midas Member

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    It's only a matter of time unless we kill ourselves. We will overcome any technological problem given unlimited time.

    Solution could be to engineer stronger humans and somehow produce gravity. We are only X years away from doing that.

    Many white people will die exploring space until we get it under control, and on behalf of the other races, I would like to thank you guys for your courage and sacrifice.
     
  5. mtnman

    mtnman Gold Member Gold Chaser Site Supporter ++

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  6. tom baxter

    tom baxter back from 2004

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    Over on reddit there is a sub/reddit about Mars, a few actually, anyway I go there and post on discussions about space elevators and terraforming. I just copy shit out of a science fiction book and they all lap it up, lol lol lol. Don't worry, I don't troll here. Here is one of the only sane corners of the web.
     
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  7. mtnman

    mtnman Gold Member Gold Chaser Site Supporter ++

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    Do you have an iphone? That was science fiction 40 years ago.
     
  8. tom baxter

    tom baxter back from 2004

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    No. iphones are for drones, I use a Samsung galaxy. But it's still made on earth, not somewhere out in the galaxy where the cost in terms of energy to get it here would be prohibitive.

    As for science-fiction becoming science fact, well some of it certainly has. but the vast majority of it will forever remain in the realm of fantasy. I mean do you really believe that within a few hundred light years there are dozens of sentient species, all walking around on 2 legs, all flying starships with warp-drive and all speaking American english?
     
  9. mtnman

    mtnman Gold Member Gold Chaser Site Supporter ++

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    I do know that there are other sentient species out there, I have seen live evidence with my own eyes. As to what they physically look like, that I do not know, I saw their ship. Your Samsung was science fiction 40 years ago as were Laser, Robots and Microprocessors.
     

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