Timeline for The topology of planets [duplicate]
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
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| Jun 19 at 14:13 | comment | added | mmesser314 | In the 1970's, Larry Niven wrote a series of science fiction books about a ribbon shaped planet. It was manufactured from a ridiculously strong material and spun fast enough that centrifugal force held the inhabitants to the inside. The science is good, aside from a few made up things that make it all possible. The first is Ringworld | |
| Jun 19 at 13:41 | vote | accept | numberwat | ||
| Jun 19 at 13:40 | comment | added | numberwat | @KyleKanos: thanks for the links | |
| Jun 19 at 12:58 | history | closed |
Kyle Kanos Miyase Qmechanic♦ |
Duplicate of Toroidal Planets | |
| Jun 19 at 12:56 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
added 2 characters in body; edited tags; edited title
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| Jun 19 at 12:55 | review | Close votes | |||
| Jun 19 at 13:02 | |||||
| Jun 19 at 12:55 | comment | added | Agnius Vasiliauskas | Needs more energy to overcome gravitational collapse, so must be very rare if any instance in universe at all. However, toroid concept is useful in a spinning black hole (see Kerr black holes), which lets to avoid singularity in the BH center. | |
| Jun 19 at 12:54 | comment | added | Kyle Kanos | Effectively a dupe of physics.stackexchange.com/q/101301/25301; See also physics.stackexchange.com/q/616421/25301 and probably a few others? | |
| Jun 19 at 12:49 | answer | added | ors | timeline score: 2 | |
| Jun 19 at 12:49 | comment | added | Michael Seifert | On a small scale the Earth has a genus greater than 0, e.g. Arches National Park, cave systems with multiple entrances, etc. | |
| Jun 19 at 12:48 | comment | added | Tobias Fünke | Is there a reason you complicate your question with introducing concepts of topology/differential geometry instead of just asking "can there exists planets with holes" (or so)? Note that questions should be formulated as easy as it can be, since we want questions/answers to be useful and interesting to a broader audience. | |
| Jun 19 at 12:44 | comment | added | PM 2Ring | Related: physics.stackexchange.com/q/428986/123208 | |
| Jun 19 at 12:44 | answer | added | Codename 47 | timeline score: 0 | |
| Jun 19 at 12:41 | history | edited | Codename 47 | CC BY-SA 4.0 |
added 16 characters in body; edited tags
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| Jun 19 at 12:39 | comment | added | Kyle Kanos | What is $g$? Clearly not the gravitational acceleration, since that's in $\mathbb{R}$ | |
| S Jun 19 at 12:33 | review | First questions | |||
| Jun 19 at 12:42 | |||||
| S Jun 19 at 12:33 | history | asked | numberwat | CC BY-SA 4.0 |