Monday, April 02
Playing It Safe
If you are less adventurous in your choice of habitats [1], [2] perhaps you would care for our third alternative: The Big Ball of Ice™. The Big Ball of Ice™ works like this: You take a whacking great neodymium magnet* and encase it in about 30,000km of ice, capped with a few hundred kilometres of diamond.**
With a diameter of 60,000 to 70,000km, the structure has the area of 25 Earths, but the low density of ice gives it a surface gravity of around 1g.*** It requires no particular dynamic maintenance; just don't let it get too warm...
* For shielding from the solar wind, and so that boy scouts don't get lost.
** All of this except perhaps the neodymium being in plentiful supply at your local cosmic outfitters.
*** Pumice can have a density one-quarter that of ice, but ice is relatively incompressible; pumice less so. If you nonetheless decide on building a World of Pumice with a diameter of 250,000km, please do write and let us know how it went.
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If you are less adventurous in your choice of habitats [1], [2] perhaps you would care for our third alternative: The Big Ball of Ice™. The Big Ball of Ice™ works like this: You take a whacking great neodymium magnet* and encase it in about 30,000km of ice, capped with a few hundred kilometres of diamond.**
With a diameter of 60,000 to 70,000km, the structure has the area of 25 Earths, but the low density of ice gives it a surface gravity of around 1g.*** It requires no particular dynamic maintenance; just don't let it get too warm...
* For shielding from the solar wind, and so that boy scouts don't get lost.
** All of this except perhaps the neodymium being in plentiful supply at your local cosmic outfitters.
*** Pumice can have a density one-quarter that of ice, but ice is relatively incompressible; pumice less so. If you nonetheless decide on building a World of Pumice with a diameter of 250,000km, please do write and let us know how it went.
Posted by: Pixy Misa at
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