Timeline for Can a generation ship withstand its own oxygen and daily wear for many thousands of years?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| May 20, 2019 at 6:49 | comment | added | Matt Skeptic | How are we going to build something 13000 kilometres in diameter? How are we going to harvest planets? | |
| May 17, 2019 at 17:41 | comment | added | abligh | @fluffysheap - if the acceleration was a constant 0.5g (or slowly changed), I'm not sure that would create too much of a problem. At one pole you'd have gravity 50% of what it is on earth, and at the other 150%. Gravity on the surface would not be "vertical" (i.e. towards the centre of the earth) - meaning you'd build at at angle to the horizon, and the seas would presumably all end up at one pole. I don't immediately see why you'd squish the 'planet' into a pancake unless you had a liquid core - which isn't a requirement. | |
| May 17, 2019 at 17:16 | comment | added | fluffysheap | Planet-scale ships are an option - but 0.5g acceleration will squash any reasonable planet into a pancake, assuming you can find that much energy. Not really sure how fast you could safely accelerate, but maybe 0.001g wouldn't end civilization. The acceleration on Earth due to the Moon is .000005g, by comparison, and that's enough to cause (much of) the tides. | |
| May 17, 2019 at 8:39 | history | edited | abligh | CC BY-SA 4.0 |
added 4 characters in body
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| May 17, 2019 at 7:50 | review | First posts | |||
| May 17, 2019 at 8:34 | |||||
| May 17, 2019 at 7:45 | history | answered | abligh | CC BY-SA 4.0 |