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  1.  
    If it's fun enough, then we won't need SPS anyway. Hydrogen and borax aren't going to run out anytime soon. If portable pB11 fusion pans out and is economic, backup consists merely in replication. You just pop down to Home Depot when you need a few extra megawatts.
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      CommentAuthorTrim
    • CommentTimeDec 5th 2016
     
    You read my mind, but getting an economical way of getting into orbit would be very handy anyway.
  2.  
    I'm looking forward to getting away from rockets. Skylon looks pricey at $50 B/plane - makes the F-35 look cheap. Startram plus momex tether looks better. Probably $20-$30 B but that's just a one-off. Maintenance should be low (in the millions annually, not billions).
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      CommentAuthorTrim
    • CommentTimeDec 5th 2016
     
    Emmy anyone???
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      CommentAuthorAngus
    • CommentTimeDec 6th 2016
     
    I want an oscar.
    •  
      CommentAuthorTrim
    • CommentTimeDec 6th 2016
     
    +2
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      CommentAuthorPJH
    • CommentTimeDec 6th 2016
     
    Anyone want to buy shares in a Cavorite factory?
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      CommentAuthorTrim
    • CommentTimeDec 6th 2016
     
    Soon
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      CommentAuthorPJH
    • CommentTimeDec 6th 2016 edited
     
    Open question;

    Could (theoretically) a scramjet (or similar) maintain (or increase) its velocity of say 7,000m/s at 90km altitude using only scavenged hydrogen and oxygen?
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      CommentAuthorTrim
    • CommentTimeDec 6th 2016
     
    Not practically, unless extra stuff to be scavenged was added artificially.

    Which defeats the purpose.
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      CommentAuthorjohnq
    • CommentTimeDec 6th 2016
     
    Posted By: PJHAnyone want to buy shares in a Cavorite factory?
    I hear they are soaring.
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      CommentAuthorTrim
    • CommentTimeAug 27th 2021
     
    At last Glaser idea for space based solar power might come into being.


    Caltech and China Racing to Space Based Solar Power | NextBigFuture.com

    https://www.nextbigfuture.com/2021/08/caltech-and-china-racing-to-space-based-solar-power.html#more-172646
  3.  
    Launch costs were $20,000 per kilogram with the Space Shuttle and $5000 per kilogram from older expendable rockets. SpaceX has a cost of $1400 per kilogram with the Falcon Heavy. SpaceX will bring the cost down to $200-400 with early SuperHeavy Starship launches.


    All thanks single-handedly to Sir Elon Musk.
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      CommentAuthorAngus
    • CommentTimeAug 27th 2021
     
    Posted By: Andrew Palfreymansingle-handedly


    Are you sure? Why is he paying all those SpaceX employees?
    OTOH perhaps the OBE was more appropriate than the KCB here.
  4.  
    Yup, pretty sure he runs the outfit and sets direction (hint: up).

    Do Canucks enjoy eligibility for royal honours of any sort?
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      CommentAuthorAngus
    • CommentTimeAug 28th 2021
     
    Not really. Lord Crossharbour got in a terrible battle with Jean Chretien about it. The sovereign has been politely asked not to do it any more. There is a Canadian honours system now which we fondly call "Snowflake" because of the little pin.
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      CommentAuthorTrim
    • CommentTimeAug 28th 2021
     
    If CANZUK is going to grow into the world government that will have to change back.
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      CommentAuthorAngus
    • CommentTimeAug 28th 2021
     
    Yes, well...
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      CommentAuthorTrim
    • CommentTimeAug 28th 2021
     
    Posted By: Andrew Palfreyman
    Launch costs were $20,000 per kilogram with the Space Shuttle and $5000 per kilogram from older expendable rockets. SpaceX has a cost of $1400 per kilogram with the Falcon Heavy. SpaceX will bring the cost down to $200-400 with early SuperHeavy Starship launches.


    All thanks single-handedly to Sir Elon Musk.


    Had they invested in a so called 'Skyhook' (Elon should as well, for easier interplanetary landing) costs would have been lower.