Posts tagged gravity
If my Mars colonists don't want to be crippled, they need to bear their own weight as close to Earth normal as possible for their waking hours. How about shoes (leather from goats and sheep) with m...
A Weyland-Yutani like conglomerate wants to colonize exoplanet in the habitable zone of the orange dwarf 0.75 M of the Sun. The planet has 2 X Earth diameter 3g surface gravity atmosphere 92% ...
The scenario is that an asteroid has been found and converted into a travelling interstellar space colony. Using some undefined future sci-fi tech, the occupants of the colony have increased gravit...
Newton who laid out a set of mathematical rules to predict the motion of objects from a falling apple to planets orbiting the Sun, however it was Einstein who described how two masses tend to accel...
If the range of gravity abruptly shortens from infinite to mere 10 light minutes, assume no other changes in properties and this effect occurs at no time at all. What happens beyond the Sun's gravi...
In this context, my world assumes an infinite universe so parallel Earths are possible and probability isn't an issue. My planet has half the gravity of Earth but an atmosphere 12x denser, although...
There is the strong theory that the Earth and the Moon were part of the same core at one point. This would lead one to believe that there are precious minerals under the surface of the Moon. Metal...
This is assuming that the direction of the gravitational gradient remains the same ("down") - it's just the magnitude that's varying. I don't need an accurate figure, just a ballpark one, which is...
Guests of this large space station enjoy Earth-like gravity (80-90% minimum). How? Well the space station is so massive it has its own gravity. The disk shaped "core" is made with ultradense mater...
Image a world that superficially appears to have Earth-like gravity. However, the moment you do not in any way touch the ground or something else that is touching the ground, there is no gravity fo...
So I'm working on a story based on a binary system involving two Earth sized, Earth like worlds with very eccentric orbits. In the story, one of the major coastal cities is protected by a massive r...
I was reading about the Riemannian Universe http://gregegan.customer.netspace.net.au/ORTHOGONAL/00/PM.html I noticed that Greg Egan doesn't seem to talk about how Gravity would work in the Riemann...
Suppose an intelligent species evolved on a large rocky planet, one with sufficient mass that the species had little hope of developing anything anytime soon that could achieve escape velocity. The...
Suppose humanity found a rocky planet outside the solar system. It is in the habitable zone of its star, has breathable air, clean water etc. A true paradise. Only problem is, its surface gravity ...
The Hollow Earth theory is/was a pseudoscientific idea that our world is actually on the inside of a large sphere. The "sky" points inward towards the center, where the "Sun" (a light source) is, w...
For my story I am working on, a peaceful alien race that is studying Earth wants to terraform the Moon by building a giant sealed dome over its entire surface, then they will create forests, desert...
My idea is to have a place that is "inescapable" by any conventional propulsion system, except it has Earth-like conditions: a breathable atmosphere, 1.0g gravity, etc. What would have to be the c...
Let's say that planet X with a gravity similar to Earth increases its gravity by a certain amount. The increase is great enough to make living conditions difficult or impossible: for instance, the ...
Let's say an alien species discovered Earth and wants to land here and establish contact, however their homeworld's gravity is only 46 percent of Earth's, Would it be possible for them to be able t...
Forgive me if a similar question has been asked, I can't find it. How would tiny creatures, ants, plankton, bacteria, for example, be affected if the Earth had twice as much mass. What are the gra...
Positive mass moves in the same direction as its momentum and if negative energy exists then it would move in the opposite direction from its momentum. I was thinking of a type of mass, known as "...
Recently LIGO discovered gravitational waves caused by two black holes that were orbiting each other, and then collapsed into one black hole. A few months later, we find out that this actually happ...
Life on Earth has developed with one Earth-gravity, more or less, as a constant for epochs. Our bones and organs both are adapted to this amount of pull, (or push, depending on how sciency you wan...
Htrae is a planet with an abnormally strong gravity. In Htrae, the escape velocity is greater than the speed of light. Suppose a civilization like humans (call them snamuhs) evolves, with the uniqu...
Imagine a human colony with the concept of an Earth day being transported somehow into the deep, deep space between galaxies. As we know, gravity wells affect the relative passage of time. So, in...
If Earth would have been sucked into black hole. Would it be crushed by gravity pressure or not?
A scientist has recently invented a gravity machine. This machine pulls all mass within a certain radius (say 50 feet?) towards it at an adjustable rate. The machine can... create as strong a g...
Is it safe to assume that any two binary planets of 0.5 to 1.5 Earth masses having mass ratios of 1:1 up to 2:1 would always have become tidally locked to one another long before any life could nat...
Is there a way to either counteract the effect of gravity on a planetary scale or create a planet with a low enough density so as to replicate the effect of weightlessness? My world takes place o...
I was thinking of an organism that lives its entire life in outer space. It would be shaped like a rocket and have skin to pressurize its insides so that its internal organs are pressurized even w...
In this case the person would experience 292Gs by the end of the 14 months, which should be enough to kill him/her but, considering that it would have taken 14 months for the environment to reach a...
No, not that one. This one. I want to see the USS Enterprise fly, but I'm curious how it would be accomplished in any realistic fashion. Now, the world I'm building that needs a flying Enterpri...
I am trying to build a world which has a bit larger gravity force than earth, 1.25g. And I was wondering which impact could this have on its geology and life evolution. I think that with a higher ...
Basically, this is a setting in which artificial gravity generation is possible and can be confined to certain areas with different settings. There are maybe five human colonies on planets with nea...
If there was to be a habitable planet, similar to earth, but with varying gravity at different points on its surface - lets pretend that it varies from .8g to 1.2g - what sort of terrain or form wo...
Question: Would it be plausible for the human body to continuously experience regular changes in gravity? Like if someone were to exercise every morning at higher than normal gravity, above Earth n...
Start with a powerful space-faring civilization. They are Kardashev Type II, having harnessed the total energy output of their sun. To do this, they have encapsulated their star with a tight-fitti...
I have this player with some portal based technology that wanted to build a moving base. His technology works like this: You need 2 portals connecting two spaces, both go in both ways, and conserv...
A space colony that resembles the design of a Stanford torus generates artificial gravity by centripetal force. Discussions about benefits of such fake gravity can be easily found: no more constan...
Related somewhat to Gravity on a Minecraftian world? say I have this infinite plane/world, then punch a circular hole through it to the other side. Say I manage to make a circular hole around 1 ki...
Specifically, I was wondering if a core of magnitite or some such other magnetic metal could be a planet's core. This is in relation to my other question, found here: Can airborne floating/flying...
Suppose, through some fantastical mechanism, all macroscopic (i.e. reasonably massive) objects in the universe were instantly made at rest. In other words, the relative velocity between every two ...
I first was thinking centripetal force on a circular ship, but performing external maintenance would be extremely difficult due to the force pushing the person or robot off. Would a spherical ves...
It's the far future. Humans are still! increasing in population. We have developed habitable orbital structures and terraformed any planet we possibly could. We reached the maximum potential for h...
Alice is living on a sphere that has zero gravity and that is in an inertial reference frame. However, she and the sphere have electrical charges that are such that if she jumps she will accelerate...
Think about a big space station or whatever giant space building. What will be its mass to attract (with gravity): Small asteroids (1-10 kg / 2-20 lbs) Spaceman (100 kg / 220 lbs) Satellites (...
I asked a similar question (in a SpaceEx manner) on Space Exploration, but here I've made it a bit more ... worldbuilding. We have a nice Space Elevator, and I'm in charge of the luxury guest acco...
I have a planet with homogeneous core and mantle, but a thick crust separated in two parts: the north half is composed of water and the south part is an alloy of heavy metals, making the north ligh...
Mars' gravity is 38% of that of Earth's. Supposing a human born and raised on a Mars colony traveled to earth later in their life, would they be able to survive the increased gravity? For example...
The idea is- as the moon is passing over, the pull of Earth's gravity on immediate area surrounding the spacecraft somehow temporarily cancelled out (still working on the how) and the craft falls t...
