All Questions
Tagged with science-based gravity
201
questions
5
votes
2
answers
306
views
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 ...
- 83
5
votes
3
answers
771
views
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 ...
- 1,553
3
votes
1
answer
361
views
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 ...
- 127k
-2
votes
1
answer
108
views
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 - ...
- 1,548
3
votes
0
answers
80
views
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,...
- 37.9k
3
votes
5
answers
203
views
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 ...
- 4,741
15
votes
8
answers
2k
views
Industrial applications of high gravity
I've just finished reading Mission of Gravity by Hal Clement, a reasonably hard-scifi novella set on a planet with exceptionally high gravity: 700g at the poles, offset by very rapid rotation to 3g at ...
- 8,702
1
vote
1
answer
120
views
Characteristics of a moon harboring huge flying creatures?
I’ve been thinking for a while about an extraterrestrial species I had in mind that more or less resemble very large four-winged four-legged birds, and in the name of ensuring I don’t handwave an ...
- 5,435
2
votes
4
answers
386
views
How viable are Airborne Aircraft Carriers on my alien world?
I have made a world that is a massive flat plane, with the surface gravity and atmospheric pressure of Titan, but a composition similar to Earth. There is one race, humans. Humans have a problem ...
- 113
0
votes
1
answer
150
views
What would the effects of drinking reverse gravity water be? [closed]
If you drank a special type of water that falls in the opposite direction of gravity, what would happen? Since you can drink water while upside-down, it might just be the same, but I wanted to make ...
- 146
2
votes
4
answers
548
views
Pulsed Acceleration Gravity
Let's say I have a spaceship under construction with a habitation module and I want a reasonably compact means of mimicking the compressive effects of gravity on the body I have two candidate ideas ...
-1
votes
1
answer
537
views
Using gravity and the Higgs Field as an inertial damper [closed]
Einstein allegedly proposed a thought experiment to back up his theories of relativity, about forces due to acceleration and forces due to gravity (even though the idea had been around since Newton) ...
- 10.4k
3
votes
1
answer
158
views
Can a tidally locked planet with two counter-orbit moons exist for at least 100,000 years?
I believe it is true (correct me if I'm wrong) that a planet with a significant moon such as ours cannot be tidally locked. The orbit of the moon would continue the rotation of the planet and must, ...
- 127k
3
votes
1
answer
127
views
Could you use the gravity of an extremely close gas giant to assist in leaving a planet
Scenario: A gas giant knocked off orbit is projected to make an extremely close approach to our planet. Close enough to cause miles high tides, continent wide earthquakes, and send our planet on an ...
- 163
2
votes
4
answers
135
views
Functioning humanoid society with negligible gravity
In a fictional world, a humanoid species settles upon a foreign planet and intends to build a colony on this planet with an eventual goal of full habitation. They originally chose this planet for ...
- 299