(urth) Hard SF

[Sergei SOLOVIEV]

About Blue and Green, I often asked myself what kind of orbit they have. 
Is it just like Earth and Moon, but
with much greater eccentricity? And what are the relative sizes? It 
seems that gravity on Green is less.

Another very exotic possibility is that they both orbit the Short Sun 
but come periodically very close.
The conjunction has the period of several years! This seems not very 
compatible with the
first variant, and may be an argument for the second.
It is very exotic because such orbits would be normally not stable, but 
one can find some very
exceptional particular "resonance" solutions when it remains stable for 
a relatively long time.

Does the Whorl orbit the Short Sun or the Blue-Green system?

Maybe this was already discussed?

Sergei

Daniel Petersen wrote:
> That's a wonderful thought, Antonin!  Is this feasible?  (Both 
> generally and in the text?)
>
> -DOJP
>
> On Wed, Nov 28, 2012 at 3:57 PM, Antonin Scriabin 
> <kierkegaurdian at gmail.com <mailto:kierkegaurdian at gmail.com>> wrote:
>
>     Do we have any idea just how close Blue and Green get during
>     conjunction?  I seem to remember that from Blue, Green is more of
>     a spec than a moon, but perhaps they are close enough, or have
>     unusually expansive atmospheres, such that during conjunction
>     their atmospheres merge and allow the Inhumi to fly from one to
>     another.  If they are this close though, they would most
>     definitely fall under the sway of one another's gravitational
>     field, which doesn't seem to be the case.
>
>
>
>     On Wed, Nov 28, 2012 at 10:51 AM, Lee Berman
>     <severiansola at hotmail.com <mailto:severiansola at hotmail.com>> wrote:
>
>
>         >David Stockhoff: We're not talking about hard SF here.
>
>         Just for the sake of discussion, I'll disagree. Perhaps Wolfe
>         isn't diamond-hard
>         but I'd give him ruby- or sapphire- on the MOhs scale. I think
>         he makes a
>         sincere attempt in most of his work, as the quote below
>         illustrates.
>
>         Where fantasy writers are content to give us shape changers
>         without explanation,
>         Wolfe provides us with a sponge cellular analogy for Tzadkiel
>         and flexible bones
>         and muscles, make-up and hypnotic abilities for Inhumi.
>
>         If the Inhumi really fly through space I'd want more than the
>         skimpy evidence we
>         are provided (and less evidence for their lying nature).
>
>         >Nick Gevers: Speaking as an engineer, how might the godling
>         be constructed so as to
>         >walk as a giant on land, where the undines [submarine
>         giantesses] cannot?
>
>         >Gene Wolfe: There are a number of ways you could go. First,
>         get rid of the notion that
>         >the godling is going to be proportioned like a human being.
>         Changes in size always mean
>         >changes in build. (Dr. Crane touches on that.) A man fifty
>         feet tall, proportioned like
>         >you or me, would sink into the ground a lot -- had you
>         thought of that? Take a look at
>         >the really big dinosaurs. Bone density could be increased,
>         and the legs and pelvis made
>         >more massive, and so on
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> -- 
> Daniel Otto Jack Petersen
> ------------------------------------------------------------------------
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