Questions tagged [gravity]
For questions about the universal accelerative force between all objects.
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What would the implications of a anti-gravity metal be? [closed]
I couldn't find a post on this, but I'm sure there's one like it somewhere.
Basically, what if there was a material that "fell" up instead of down? Let's call it Newtonium, and let's also ...
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If an otherwise too massive planet rotates fast enough, would the equatorial region become habitable?
Ok, So I'm writing with an eye toward pondering the constraints of terraforming, which are more numerous than most people think, which creates a plethora of fun quirks and constraints for story ...
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What is the maximum survivable gravity for humans for say 8 months
I know the human body can survive multiple g's for short periods - like fighter pilots or F1 drivers. But what is maximum survivable gravity for more than just a transient moment? Could a body live on ...
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What is the gravity above which launching into space is hindered? [duplicate]
I'm building a scenario where humanity meets an alien society with a technology comparable to that we have in the 2000's and beyond. Its technological level is comparable to ours. They have tapped ...
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What would life be like in a universe with gravity that increases with distance?
We live in a universe where gravity is determined by the inverse squared of the distance between the two objects. Inverse gravity has already been explored here.
But what if gravity grew stronger with ...
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Crafting a Water Cycle for a Cube World with State-dependant Gravity
So I have a cube world with the standard 6 sides, with a top and bottom that do not change. We can ignore any rotation of the other side-sides for the sake of this question. I am trying to come up ...
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Can a cube-shaped(ish) world have uniform(ish) gravity when composed of ideal materials, including antimass?
I'm trying to design a cube world while sticking somewhat closeish to real physics, but am not entirely sure about the physics involved with objects of non-uniform density, specifically as relates to ...
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How do these trees not collapse? [closed]
I'm currently building a planet, an ammonia world with an average temperature of 225ºK and has a mass of 2 earth masses and a radius of 1.25 earth radii. The average pressure at sea level is 4 ...
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How much mass could be added around the Earth before the Earth's orbit around the sun changed?
In the not too distant future Earth will enter its golden age of industrialization and construction. Pulling raw materials from other planets (not from Earth), humans begin building mega structures ...
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Climate on a Moon orbiting a primary in the habitable zone of a sunlike star
I created the following system (including a simulation in universe sandbox which seems stable):
Sun-like G-type star with same mass, density, radiation profile, diameter and luminosity as the Sun.
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How do Hill spheres work for binary planets?
A small moon is able to maintain a stable orbit around a planet at just under half the radius of the planet's Hill sphere. Most of Jupiter's moons are in this configuration, possibly made more stable ...
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Binary Star System Physics
I am envisioning a planet that has two orbiting stars: a small yellow-white F class and a larger orange K class star. The stars were once closer and created a more tumultous tectonic history but since ...
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Gravity changes in relation to different sizes of celestial objects
The Problem
I changed the circumference of some of my world's celestial objects. How can I calculate the object's new gravity?
The density of the objects is still the same as it would originally be - ...
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Roughly how big could the tidal range be on a human habitable Earth analogue world?
The Gravitational tidal forces can be supplied by any orbiting moon(s)/twin planet(s) of any mass and any orbital radius, inclination or orbital radius, but the system must be stable for at least 10,...
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Would things engineered to work on earth work ok in 1.25 times earth gravity? [closed]
A while ago I asked this question about if a planet 1/5th larger than earth could remain earth like. The top answers all seemed to agree that while the planet could be that much larger and still only ...
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