Celestia Forums

Another paper here posits very large "terrestrial" (ie, rocky) planets, with radii ranging from 0.31J at M~0.5J to 0.35J at M~2J. An object at the top end of this scale would have a density of 60000kg/m^3, and a surface gravity of 40g. This is way beyond any hypothetical planet I have heard of befo...

You don't need a tube, if you are modelling a wormhole as described by Visser or by the Orion's Arm group; the holes connect space directly with no tube.
All you would need to do is plunge into the 'black hole' object and instantaneously exit at the bookmarked location.

Hi... For illustration purposes I have used the moonhi texture (created by Jens) to show the positions of various colonies on the moon in the year 300 After Tranquillity (300 AT); It is shown here at the bottom of the page... http://www.siderealgames.com/cgi-bin/Blah/Blah.pl?,v=display,b=1008,m=1067...

I must remember to log in I must remember to log in

Isaid I would post any new worlds when I put them into Celestia; here is Nova Terra, by Anders Sandberg; http://www.orionsarm.com/worlds/Nova_Terra.html This is Bolobo, by me; http://www.orionsarm.com/worlds/Bolobo.html I would like to make the surface of this world shiny, by the way, as the green p...

I think I will change the density to your figure - thank you; the planet was supposed to have a small iron core, but I couldn't figure out how to fudge the maths. the city ring is dynamically supported at a low altitude using mass particles; this is an extension of Paul Birch's ideas about Dynamic C...

Perhaps a steam railway or two; the trouble with allowing a railway is that the cylinder boring machines can produce accurate artillery; this is supposed to be a low tech world... There are dozens of detailed worlds in OA, and hundreds with less exhaustive descriptions; as I put them into Celestia I...

Ah, yes; the French have convinced me that waterworlds will be common throughout the galaxy. there is no real reason why the planet has to migrate inwards, however- if we imagine a large 2x Earth sized terrestrial forming at approximately the same orbital distance as the Earth (around a sun-like sta...

Thank you; that is very encouraging.

I am a complete newbie to this space simulation game, although I have been worldbuilding for a few years now at Orion's Arm; you can see my first ever Celestia planet here on this OA related forum (sorry, I don't have a home page of my own yet)... the planet iself is described here . I am interested...

Sorry; I see I will have to remember to log in every time in future.