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      CommentAuthorTrim
    • CommentTimeApr 5th 2017
     
    Thanks for looking it up but you got the wrong system, Proxima and Trappist are different stars.
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      CommentAuthoralsetalokin
    • CommentTimeApr 5th 2017 edited
     
    Different stars, but likely with the same problems. Life thriveth not in the nearabouts to an active flare star.
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      CommentAuthorTrim
    • CommentTimeApr 5th 2017
     
    yeah but planets often go for a wander so could be far away when the star is most active, also frozen nomad planets can be captured.

    I don't like planets much I prefer comets and asteroids.
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      CommentAuthorAngus
    • CommentTimeApr 5th 2017
     
    Posted By: TrimThanks for looking it up but you got the wrong system, Proxima and Trappist are different stars.


    Wby don't you read my post -I mean after the first five words?
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      CommentAuthorTrim
    • CommentTimeApr 5th 2017
     
    Posted By: Angus
    Posted By: TrimThanks for looking it up but you got the wrong system, Proxima and Trappist are different stars.


    Wby don't you read my post -I mean after the first five words?


    Because I find it difficult to work what your Canadian spelling means.

    Gotcha.
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      CommentAuthorAngus
    • CommentTimeApr 5th 2017
     
    You mean you just kent figure it out?
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      CommentAuthorTrim
    • CommentTimeApr 6th 2017
     
    "Upward Bound: Mass Drivers"


    https://youtu.be/KerG4ILWEa4
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      CommentAuthorTrim
    • CommentTimeApr 6th 2017
     
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      CommentAuthorTrim
    • CommentTimeApr 6th 2017
     
  1.  
    Compare and contrast against Phobos. Phobos offers its own building material and whatever advantages a large mass body offers, like relatively easy radiation shielding. In contrast, an artificial station offers the option of artificial gravity via rotation.

    I doubt Lockheed are proposing either choice.

    An interesting combination might be to spin up Phobos for one gee centrifugal, so that you'd walk on the ceiling of an excavated shell inside.
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      CommentAuthorTrim
    • CommentTimeApr 6th 2017
     
    Well done you passed.
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      CommentAuthorTrim
    • CommentTimeApr 7th 2017
     
    Atmosphere around super-Earth detected.

    https://phys.org/news/2017-04-atmosphere-super-earth.html
  2.  
    It would be more accurate to call it a super-Venus.
  3.  
    https://en.wikipedia.org/wiki/Gliese_1132_b
    Around a 200 year trip for 40 LY with StarShot
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      CommentAuthorTrim
    • CommentTimeApr 7th 2017
     
    A super Venus may not be that bad, depending on the temperature and pressure of the upper atmosphere.

    Don't forget that cloud city colonies on Venus are theoretically possible.
  4.  
    Venus terraforming begins with sunshades.
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    ... and ends with the sky falling.
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    Yes, that's the idea. If we can describe the process then it's possible to do it. Some bonuses of Venus over Mars:
    1) We get about the same gravity as Earth
    2) We get lots of nitrogen for export
    3) It's probably safe to assume that we won't have a biological contamination issue vis a vis an original population (however, deep subsurface might harbour life).
  7.  
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      CommentAuthorAngus
    • CommentTimeApr 7th 2017
     
    He didn't describe the idea. The talk was almost entirely about "what-if".
    In the little he did say about his antimatter drive he said he solves the problem of production and storage of the antimatter by using a radioisotope source of positrons. In fact his entire contribution is a little passive device that cools down the positrons after they come out.
    I can't see an interstellar spaceship powered from the positrons they capture out of a chunk of radioisotope.