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  1.  
    Suck the gravity out of gravity
  2.  
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      CommentAuthoralsetalokin
    • CommentTimeJan 12th 2020 edited
     
    Posted By: Andrew PalfreymanFermi again
    https://www.youtube.com/watch?v=XAuQRd9RoA4


    Nice one. The steady state reminded me of Conway's "Life" cellular automaton. Except instead of occurring on a 2-dimensional regular grid, it happens in 3-d and with irregularly spaced civilizations ("cells") and variable propagation rates ("generations").

    I especially liked the point about absence of evidence not being evidence of absence of prior visitation here, since this miserable planet grinds everything to dust and resurfaces itself continually. Nothing would remain of even a world-girding saurian civilization, a billion years after it has died off.

    Still, one would think the whole ether would be awash with modulated RF that would be pretty evident every time we pointed some big ear at a nearby (lol) galaxy, demonstrating that at least _there_ there is someone home.
  3.  
    Well, we've only been at this radio lark for a century or so, and we're talking timescales of billions of years. A bit of a contrast there. Perhaps, for instance, there's some zeptohertz modulation in those FRBs that eludes us currently.
  4.  
    Colonising Mars is going to be hard. If we are serious about it, then the first thing we need to do with our new fleet of Starships is to set up an SPS (solar power satellite) network around Mars and also set up the associated ground stations.

    This is because power generation is the chief challenge, and this especially in the case of planet-wide dust storms that can last for months. The SPS beam is designed to penetrate the dust, so microwave most likely. We'll need to start with megawatts and move to gigawatts in short order. There's no available tech on hand currently that can do this for us, except SPS.
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      CommentAuthorAngus
    • CommentTimeJan 12th 2020
     
    Posted By: Andrew PalfreymanWell, we've only been at this radio lark for a century or so, and we're talking timescales of billions of years. A bit of a contrast there. Perhaps, for instance, there's some zeptohertz modulation in those FRBs that eludes us currently.

    .
    Not a whole lot of bandwidth there. I figure about 1 bit per billion life-of-the-universes
  5.  
    Good catch! It was however pulled out of thin air at a moment's notice.
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      CommentAuthorTrim
    • CommentTimeJan 12th 2020 edited
     
    Posted By: Andrew PalfreymanColonising Mars is going to be hard. If we are serious about it, then the first thing we need to do with our new fleet of Starships is to set up an SPS (solar power satellite) network around Mars and also set up the associated ground stations.

    This is because power generation is the chief challenge, and this especially in the case of planet-wide dust storms that can last for months. The SPS beam is designed to penetrate the dust, so microwave most likely. We'll need to start with megawatts and move to gigawatts in short order. There's no available tech on hand currently that can do this for us, except SPS.


    It will kill some in unpleasant ways.

    Like I keep on saying we need to find out if the 'Martian moons' have any ice left on them if so plan to use that to refuel on them, the first travellers to Mars should do a 'Collins' by just orbiting around Mars using the moon's to shelter from radiation, do 'geology' with them and maybe gather any rocks and dust they have in bags to build an 'Aldrin cycler' which could help protect further explorers from radiation and low gee and give scientists substances of interest to explore on their travels.
  6.  
    After solving the power problem, the next task is fuel production via the Sabatier process. Although it is probably the case that the first ships will be left on the surface, the lifeboat ability to return must always be guaranteed.

    It can be argued that Musk's plan is premature. If we wait a few decades, we can have compact and portable fusion power, and we can set up all necessary initial infrastructure before a single life is risked on the surface by dint of advanced AI and robotics.

    But hey fuck it - adventure.
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      CommentAuthorDuracell
    • CommentTimeJan 12th 2020
     
    Posted By: Andrew PalfreymanIf we are serious about it,
    It’s ok, clearly we are not. We have a perfectly habitable planet here already and we seem to be serious attempting to decolonise it and render it uninhabitable for ourselves. Mars already seems to be uninhabitable for us, so that’s one that we can scratch off the to do list...
  7.  
    For certain values of "we" of course.
  8.  
    Even if there is a global thermonuclear war with 4 years of nuclear winter, or even a midsized asteroid impact... the Earth will still be easier and more rewarding to colonize than Mars.
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      CommentAuthoralsetalokin
    • CommentTimeJan 12th 2020 edited
     
    Go ahead, Elon. Grow a potato on Mars. Using locally obtained "soil" and water, and under ambient conditions of atmosphere and weather. Send your fanciest AI gardener up there with a few seed potatoes and let's see what happens.
  9.  
    That tossed down gauntlet made an almost audible slap.
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      CommentAuthorTrim
    • CommentTimeJan 12th 2020
     
    From Phobos you can use tele workers to build bases without the high risk of landing a 50% failure rate so far.

    Don't rush everything be as safe as possible, unless you just want to plant a flag.
  10.  
    Posted By: TrimFrom Phobos you can use tele workers to build bases
    A good halfway house.
    • CommentAuthorBigOilRep
    • CommentTimeJan 12th 2020
     
    Posted By: alsetalokinEven if there is a global thermonuclear war with 4 years of nuclear winter, or even a midsized asteroid impact... the Earth will still be easier and more rewarding to colonize than Mars.

    Indeed, it will at the very least have the gravity we are adapted for. And a breathable atmosphere. And water. And food sources.
    • CommentAuthorBigOilRep
    • CommentTimeJan 12th 2020
     
    Posted By: Andrew PalfreymanBut hey fuck it - adventure.

    Well, vicarious adventure. You aint going anywhere.
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      CommentAuthorTrim
    • CommentTimeJan 12th 2020
     
    You would be amazed where his alien friends take him on Tuesdays.
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      CommentAuthorAngus
    • CommentTimeJan 12th 2020
     
    Let's not go there.