https://scientific-speculation.codidact.com/categories/15/tags/2063.rssNew Posts Tagged 'gravity' - Scientific SpeculationScientific Speculation - Codidact2020-06-02T18:14:42Zhttps://scientific-speculation.codidact.com/posts/263073How long would a planet that losses its gravity take to break up?Dave Driverhttps://scientific-speculation.codidact.com/users/447532020-05-10T11:15:13Z2020-06-02T18:14:42Z<p>In my setting, one of the fallouts due to interstellar war between civilisations is that a planet's gravity can be removed. This capability is part of the setting's hyperspace mechanics so the e...https://scientific-speculation.codidact.com/posts/263495If the Earth would break apart, how likely would the large debris stay in orbit?SKKennellhttps://scientific-speculation.codidact.com/users/78922020-05-29T09:32:34Z2020-05-29T17:16:21Z<p>In the story I'm writing, Earth gets destroyed and the few million humans that survive go to live on another Earth-like planet. </p>
<p>Since the destruction of the planet, the humans do visit ...https://scientific-speculation.codidact.com/posts/263450To carry a person in its palm (like King Kong) how much pressure and at what speed would a kaiju need to apply?Luke Duffyhttps://scientific-speculation.codidact.com/users/527862020-05-27T13:42:00Z2020-05-27T15:50:46Z<p>Assume my kaiju is around 200 feet tall, weighs around 4,000 US tonnes and resembles a large lobster with two giant claws for its front legs and long spindly limbs with tiny pincers on the ends ...https://scientific-speculation.codidact.com/posts/263437How long can a human body function at safe levels in slightly higher and lower gravity?RandySavagehttps://scientific-speculation.codidact.com/users/443002020-05-26T23:04:22Z2020-05-27T01:00:13Z<p>I have a number of alien species from different planets with gravity between 0.5g and 1.75g and I wanted to have groups of each of the species to exist together in a space habitat. As pointed ou...https://scientific-speculation.codidact.com/posts/262773What percentage of stars would need to become Shkadov thrusters to move the whole galaxy?RandySavagehttps://scientific-speculation.codidact.com/users/443002020-04-30T14:29:43Z2020-05-01T04:26:04Z<p>The advanced civilization in my story is trying to reach as many galaxies as possible in the next few billions years before the expansion of space has sent those galaxies permanently out of reac...https://scientific-speculation.codidact.com/posts/262763Specific gravity change for my worldNRJohnsonhttps://scientific-speculation.codidact.com/users/448302020-04-30T00:42:34Z2020-04-30T00:42:34Z<p>Ok, so this is a culmination of a few questions into one final question: am I doing this right? I am trying to figure out the gravitational difference from one end of a continent to another. The...https://scientific-speculation.codidact.com/posts/262702What is the tallest mountain possible in any gravitational environment?Slartyhttps://scientific-speculation.codidact.com/users/56482020-04-27T10:00:34Z2020-04-28T01:15:21Z<p>In world building it is often interesting to consider extreme landscapes "“ how tall can a mountain be on Earth for example. But what is the tallest mountain possible in any gravitational enviro...https://scientific-speculation.codidact.com/posts/262478Could habitable planets form in an ultracompact galaxy?RandySavagehttps://scientific-speculation.codidact.com/users/443002020-04-21T14:22:06Z2020-04-22T15:02:24Z<p>I am wondering if habitable planets could form around stars in super dense dwarf galaxies. There are some super dense galaxies such as M60-UCD1 and M85-HCC1 which can have a typical distance bet...https://scientific-speculation.codidact.com/posts/262321Roughly how long could an 'Oumuamua type object get?Slartyhttps://scientific-speculation.codidact.com/users/56482020-04-14T22:49:11Z2020-04-16T00:38:16Z<p>Roughly how long could an <a href="https://en.wikipedia.org/wiki/%CA%BBOumuamua" rel="nofollow noreferrer">'Oumuamua</a> type object get if created naturally or if created artificially using fus...https://scientific-speculation.codidact.com/posts/262253Would a life-bearing Earth-like world with 3g average gravity produce more or fewer flying creatures than Earth?James Grossmannhttps://scientific-speculation.codidact.com/users/33032020-04-12T00:30:39Z2020-04-13T20:25:59Z<p>On one hand, heavier gravity would make flying more difficult, owing to greater weight restrictions on the flying creatures' bodies. </p>
<p>On the other hand, the greater density of the atmo...https://scientific-speculation.codidact.com/posts/262199How large could sea creatures grow on a terraformed Ganymede?Waxhttps://scientific-speculation.codidact.com/users/442442020-04-09T14:29:30Z2020-04-09T15:18:08Z<p>If we assume a terraformed Ganymede has a global ocean roughly 800km deep, that food is bountiful, and that it has been populated by a variety of life from Earth, how large could these creatures...https://scientific-speculation.codidact.com/posts/262043I need a spacecraft to be pulled into the sun's gravity!zengun309https://scientific-speculation.codidact.com/users/384892020-04-03T11:16:26Z2020-04-03T15:16:15Z<p>So, as I understand it, the spacecraft would need to move in the opposite direction to the orbit. Are there any calculations I could make to attach a clicking-tock onto this? If the spacecraft w...https://scientific-speculation.codidact.com/posts/261923What is the minimum and maximum gravity level that nearly all humans can sustain over a 5 year period?galactic_analyzerhttps://scientific-speculation.codidact.com/users/445642020-03-31T02:35:13Z2020-04-03T00:18:58Z<p>There are several questions related to effects of different gravity levels on the human body, but none adequately answer a fundamental question: What is the maximum and minimum gravity that <str...https://scientific-speculation.codidact.com/posts/261603High Mountains in High GravityAezychttps://scientific-speculation.codidact.com/users/442022020-03-17T21:48:28Z2020-03-18T01:10:22Z<p>What would cause/allow a planet with very high gravity to have tall, sharp mountains?</p>
<p>Mountain height is generally capped off by gravity, erosion, and the mountains composition. On a hig...https://scientific-speculation.codidact.com/posts/259799The One Problem With Terraforming and Colonizing a Super-EarthJohnWDaileyhttps://scientific-speculation.codidact.com/users/43992020-01-26T23:39:25Z2020-02-29T13:00:25Z<p>Many people are excited with the idea of super-Earths--rocky, habitable exoplanets greater in mass, density and diameter (because I'd prefer to go the whole way than stop at the halfway point) t...https://scientific-speculation.codidact.com/posts/260845Is it believable to have a spaceship spin around a weight for artificial gravity?user72655https://scientific-speculation.codidact.com/users/446382020-02-25T19:26:59Z2020-02-28T04:23:57Z<p>In my narrative universe, there will be ships that use a 1g acceleration for artificial gravity. However, when they are not accelerating (whether on a longer journey at a constant velocity or si...https://scientific-speculation.codidact.com/posts/254146Schwarzschild Metric in a universe with the same space time metric as that described in the orthogonal series, but with massive gravitons?Anders Gustafsonhttps://scientific-speculation.codidact.com/users/379592019-07-08T05:54:05Z2020-02-26T02:50:54Z<p>The universe described in the orthogonal series <a href="http://www.gregegan.net/ORTHOGONAL/00/PM.html" rel="noreferrer">http://www.gregegan.net/ORTHOGONAL/00/PM.html</a> is one, in which the mi...https://scientific-speculation.codidact.com/posts/260797Gravity in a lunar baseMaxim Zabolotskikhhttps://scientific-speculation.codidact.com/users/434402020-02-24T15:09:23Z2020-02-25T09:23:33Z<p>Imagine a big Moon base situated under a dome. Big means under the dome there is a small city with buildings, streets and ca. 30,000 inhabitants. The best analogue in the movies would be the Cer...https://scientific-speculation.codidact.com/posts/260687How would a bird's flight change entering the zero gravity axis of an O'neil cylinder?RandySavagehttps://scientific-speculation.codidact.com/users/443002020-02-21T12:58:46Z2020-02-21T17:37:45Z<p>This question on space stack begins to tackle how a bird could fly inside an O'Neill cylinder, <a href="https://space.stackexchange.com/questions/27665/can-birds-fly-inside-an-oneill-cylinder">h...https://scientific-speculation.codidact.com/posts/240173Would trams be workable on a low-gravity world?Seanhttps://scientific-speculation.codidact.com/users/193472018-03-14T23:01:05Z2020-02-21T04:10:14Z<p>After reading <a href="https://worldbuilding.stackexchange.com/questions/58333/how-to-fly-around-the-martian-thin-layer-of-sky-without-burning-holes-in-our-poc">this thread from a bit under a ye...https://scientific-speculation.codidact.com/posts/237814Gravity/Ecosystem on a peanut-shaped planet?DiagonalCorgihttps://scientific-speculation.codidact.com/users/418102017-12-21T00:02:24Z2020-02-21T04:07:51Z<p>I'm interested about whether or not and how gravity would be affected on deformed planets. You could think of this as whether or not mega-asteroids would be able to sustain life? If so, would di...https://scientific-speculation.codidact.com/posts/251648Is it possible to ice skate on an ice moon/world?Sean Kindlehttps://scientific-speculation.codidact.com/users/436692019-04-02T03:38:16Z2020-02-21T04:07:35Z<p>If you found out a way to produce a smooth icy surface on an ice moon like Ganymede, Enceladus, or Callisto, what kind of challenges would someone face if they tried to start ice skating? I figu...https://scientific-speculation.codidact.com/posts/257596Higher Gravity vs Higher Air DensityAezychttps://scientific-speculation.codidact.com/users/442022019-11-11T00:12:08Z2020-02-21T04:01:24Z<p>Planets that are larger and have higher gravity tend to have thicker atmospheres, since it is easier to hold onto gases.</p>
<p>Higher air pressure leads to a higher air density, and therefore,...https://scientific-speculation.codidact.com/posts/206205Would the human body support living on planets with a greater gravity than Earth?Garoalhttps://scientific-speculation.codidact.com/users/364272014-09-17T11:45:06Z2020-02-20T00:29:32Z<p>I once read a novel about a prison-planet which was chosen to make the prisoners suffer. One of the different "tortures" was a gravity three times higher than that on Earth.</p>
<p>Would the hu...https://scientific-speculation.codidact.com/posts/253233Asteroid in the asteroid belt suddenly gains the gravity of the earthWilliam Oliverhttps://scientific-speculation.codidact.com/users/44202019-05-26T21:46:37Z2020-02-07T05:22:32Z<p>An entrepreneur has a dream. He wants to create the most amazing and magical amusement park in the solar system. He goes to investors with the blue prints of the park, and they think it's a good...https://scientific-speculation.codidact.com/posts/259923How could an Earth-like planet support all-metal airships?Vigilanthttps://scientific-speculation.codidact.com/users/438592020-01-29T02:05:35Z2020-02-05T21:28:34Z<p><a href="https://i.stack.imgur.com/Iv5pK.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Iv5pK.jpg" alt="Red Dragon - Credit to Jakub Rozalski"></a>
<a href="https://i.stack.i...https://scientific-speculation.codidact.com/posts/260171Would an anti-gravity organ allow kaiju to avoid cube-square problems?Mark Gardnerhttps://scientific-speculation.codidact.com/users/398612020-02-05T10:13:10Z2020-02-05T18:12:15Z<p>It is (around here, anyway) quite well known that science does not allow the existence of kaiju, mainly because of the cube-square law.
bones rip themselves out
To my understanding, this boils...https://scientific-speculation.codidact.com/posts/259118What would gravity, breath, and human bodies be like near the heart of the Earth?Systemhttps://scientific-speculation.codidact.com/users/-12020-01-04T22:01:04Z2020-02-02T06:39:10Z<p>If humans lived on the inside of the earth's crust, what would happen if they climbed mountains? These mountains would stretch toward the burning center of the Earth. Would gravity get stronger ...https://scientific-speculation.codidact.com/posts/259468Low gravity space shipyard vs micro gravity shipyardMartinArrJayhttps://scientific-speculation.codidact.com/users/413252020-01-16T13:15:12Z2020-01-17T08:05:41Z<p>If you had a device, similar to a Stargate, but that allowed seamless two way transfer, and that could be moved (You could essentially strap a rocket on it, and fuel it from Earth), you could ju...https://scientific-speculation.codidact.com/posts/2180561 Light Year Diameter PlanetKcronixhttps://scientific-speculation.codidact.com/users/366642016-03-14T12:34:53Z2020-01-15T18:32:02Z<p>Suppose a species has limitless resources and the ability to construct megastructures of an astronomical scale.</p>
<p>Would it be possible, given antigravitational technology (hypothetical), t...https://scientific-speculation.codidact.com/posts/259165How many pillows would you need to survive a fall from a church tower?KeizerHarmhttps://scientific-speculation.codidact.com/users/64482020-01-06T18:56:44Z2020-01-13T09:05:20Z<p>The praised Dutch book "Koning van Katoren" features an 18 year old who wants to become king of his country of Katoren, which had been under the regency of half a dozen evil ministers for his wh...https://scientific-speculation.codidact.com/posts/208222What would the problems with / consequences of a torus shaped planet be?Timhttps://scientific-speculation.codidact.com/users/234772014-12-13T18:43:28Z2020-01-11T13:19:00Z<p>Take a torus planet:</p>
<p><img src="https://i.stack.imgur.com/CeMp1.png" alt="enter image description here"></p>
<p>It has the structure of a normal planet (ours):</p>
<p><img src="https://...https://scientific-speculation.codidact.com/posts/226612Would humanoids from high gravity planets be smaller than us?Greenhttps://scientific-speculation.codidact.com/users/69632016-12-19T14:56:40Z2019-12-14T01:16:44Z<p>The usual characterization of humanoids from high gravity planet is that they are stockier with thicker bones and larger muscles and this assumption isn't far fetched. Heavy animals on earth ha...https://scientific-speculation.codidact.com/posts/258575Spin gravity on an abandoned shipcarsonogen089https://scientific-speculation.codidact.com/users/444422019-12-13T22:46:59Z2019-12-13T22:51:25Z<p>If a cylindrical rocket ship with a diameter of about 350 meters were spinning on its long axis, would more than just the interior surface of the outer hull have artificial gravity? </p>
<p>The...https://scientific-speculation.codidact.com/posts/258429Under which circumstances could a planet have two visible suns?Iván Flores Vázquezhttps://scientific-speculation.codidact.com/users/444012019-12-09T22:03:03Z2019-12-11T21:48:35Z<p>In the story I'm making, it is important that there are two suns in the sky, going at different rythms (maybe the planet orbits one of them each year, and the other each four years, for instance...https://scientific-speculation.codidact.com/posts/258371How fast do we spin this for 'One g'Pelinorehttps://scientific-speculation.codidact.com/users/422132019-12-08T04:12:49Z2019-12-08T04:51:48Z<p>Following on from <a href="https://worldbuilding.stackexchange.com/questions/163065/how-many-people-can-a-sealed-3x1x1-km-biome-support">this question</a>.</p>
<p><strong>Question Context :</st...https://scientific-speculation.codidact.com/posts/258192Can adding mass to a ringed planet cause a huge chain reaction?overlord - Reinstate Monicahttps://scientific-speculation.codidact.com/users/78782019-12-02T17:11:31Z2019-12-03T00:10:20Z<p>I've been wondering about this for a while. Here is the research I've done so far that lead me to ask this question:</p>
<ul>
<li><strong>A <a href="https://en.wikipedia.org/wiki/Ring_system" r...https://scientific-speculation.codidact.com/posts/258070Mega fauna and flora on a super earthJohnarahttps://scientific-speculation.codidact.com/users/443932019-11-26T14:54:43Z2019-11-26T16:27:34Z<p>I am working on a super-earth, about 1.5 more massive than Earth. On this planet, there's a large variety of megafauna and flora across the world. The biggest trees over there can grow to be 36 ...https://scientific-speculation.codidact.com/posts/257898Sniper team from different G-WorldsStainlessSteelRathttps://scientific-speculation.codidact.com/users/382832019-11-20T19:01:18Z2019-11-21T17:21:56Z<p>The metric system (SI units) is a base-10 measurement system based on the meter, kilogram and second. But it is tied to earth.</p>
<p>A second, which historically was defined as 1/86,400 of a ...https://scientific-speculation.codidact.com/posts/230557Freedom from the tyranny of gravityadaliabookshttps://scientific-speculation.codidact.com/users/405932017-04-21T09:46:41Z2019-11-21T11:59:21Z<p>So I've been browsing Worldbuilding for a while now and the answer to so many questions seems to be "No, gravity doesn't allow it".</p>
<p>Gravity (and the square-cube law, but as I understand ...https://scientific-speculation.codidact.com/posts/257893Using Magnet Technology to Make a Rotating Space Station?Greenie E. - Reinstate Monicahttps://scientific-speculation.codidact.com/users/436042019-11-20T15:31:34Z2019-11-20T19:05:39Z<p>For an artificial gravity ring station, could you make a central hub, using similar magnet technology used to levitate magnet trains here on earth, to reduce the amount of mass rotating? My thou...https://scientific-speculation.codidact.com/posts/257826How large can differences in gravity be without being overly dangerous to humans?overlord - Reinstate Monicahttps://scientific-speculation.codidact.com/users/78782019-11-18T23:05:06Z2019-11-19T00:27:43Z<p>Let's imagine a planet that is 5000 km in diameter but has the mass of the Earth. I'd imagine standing on that planet might feel similar to standing on the Earth, because the gravity would be co...https://scientific-speculation.codidact.com/posts/257748Large flying creature on super earth?Johnarahttps://scientific-speculation.codidact.com/users/443702019-11-16T16:41:50Z2019-11-18T14:46:10Z<p>I am working on a habitable planet that orbits around a red dwarf star and it is about 1.5 times bigger and more massive than the Earth. Gravity there is stronger and the atmosphere is thicker.<...https://scientific-speculation.codidact.com/posts/257610Is a "Partial" Black-Hole Possible?overlord - Reinstate Monicahttps://scientific-speculation.codidact.com/users/78782019-11-11T15:11:52Z2019-11-11T19:28:16Z<p><a href="https://en.wikipedia.org/wiki/Black_hole" rel="nofollow noreferrer">Black holes</a> are created by the gravitational collapse of massive stars.</p>
<p>But in theory, black holes can al...https://scientific-speculation.codidact.com/posts/257581Using spin gravity only for stationary activities?Duke Letohttps://scientific-speculation.codidact.com/users/425662019-11-10T04:50:07Z2019-11-10T05:09:39Z<p>For a spacecraft cruising without thrust it is my understanding that the sort of spin gravity utilized in the film <i>2001</i>, for instance, would actually be debilitating to the crew due to th...https://scientific-speculation.codidact.com/posts/257379Would a flying, human sized species from a planet smaller than Earth be stronger, as strong or weaker than humans?Wayward Astronauthttps://scientific-speculation.codidact.com/users/436642019-11-04T04:54:03Z2019-11-04T12:49:39Z<p>I'm working on a sci fi story where one of the species has batlike wings and comes from a moon around the size of Titan with roughly the same atmospheric pressure as Earth. Initially, I thought ...https://scientific-speculation.codidact.com/posts/257068Could this method of moving planets work?Wiggo the Wookiehttps://scientific-speculation.codidact.com/users/435202019-10-24T09:44:07Z2019-10-29T02:07:33Z<p>In my <a href="https://worldbuilding.stackexchange.com/q/158785/61581">last question</a> about methods of deflecting a rogue planet, there was a <a href="https://worldbuilding.stackexchange.com/...https://scientific-speculation.codidact.com/posts/257193What effects would a higher gravity have on my world's geography and climate?Johnarahttps://scientific-speculation.codidact.com/users/443122019-10-27T13:09:02Z2019-10-27T15:11:10Z<p>I'm currently designing a super earth with a surface gravity of 1.5g and a thick oxygen rich atmosphere. Now since the gravity is higher, how exactly would that affect my world? For example:</p>...https://scientific-speculation.codidact.com/posts/257056Could we move a gas giant by venting its gas?meaninglessnamehttps://scientific-speculation.codidact.com/users/439162019-10-23T23:58:57Z2019-10-24T08:55:41Z<p><strong>Could humanity move a planet such as Jupiter by forcing it to vent its gas?</strong></p>
<p>Assuming we have the technology to do huge mining operations and use these to make some of Ju...https://scientific-speculation.codidact.com/posts/247426Would it ever be possible for humans to adapt to Jupiter's gravity?AdrienDaBosshttps://scientific-speculation.codidact.com/users/419362018-11-09T19:04:56Z2019-10-23T23:53:42Z<p>If humans could travel to Jupiter, what ways would we have to adapt to the high levels of gravity?</p>
<p>Would your blood flow to your legs and kill you from lack of oxygen in the brain?
Would...