Questions tagged [interstellar]
Used for questions asking about interstellar (non-nebula) issues other than planets and travel. This would include interstellar (or multi-stellar) civilization, communication, combat, and the contents of space between solar systems NOT relating to potentially habitable planets. For planets in the interstellar medium, use the interstellar-planets tag. For travel, use the interstellar-travel tag. Questions that involve nebula should use the nebula tag.
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How much energy would a collapsing wormhole release?
In my fictional universe, after experimentation with quantum field manipulation, a way to open, expand and stabilize wormholes is developed, requiring an immense flux of energy (as manipulating ...
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Why does an interstellar civilisation use outdated weapons? [closed]
Backstory
In a distant galaxy, humanity once had an empire sprawling hundreds of thousands of stars. Then it collapsed. Now humanity is beginning to spread again, absorbing its old colonies into a new ...
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Is a planet-sized magnet a good interstellar weapon?
(Same universe as Saturnian Cloud Cities and Quazar Power Plant)
In this setting, humans (Earthborn) are the first intelligent life to emerge in the Milky Way. They have now unified and became a grand ...
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Would it make sense for an Interstellar government to use the half life of common radioactive elements as a measure of time? and to make calendars? [closed]
For example, can we use the half life of Polonium or Uranium to measure time and produce something similar to a calendar?
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What reliable source of power is best on a newly colonized interstellar planet?
I have been working on a hard Sci-Fi narrative of a first-time human colonization scenario on an interstellar star system like Alpha-Centauri.
My narrative though uses NO FTL drives or other fictional ...
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Moving Ceres to a new home?
Is it possible to use Ceres is a generational garden ship? The idea would be to tunnel out a Stanford torus like set-up under the regolith in the ice layer around the equator: underground but ...
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Best star for a Dyson sphere?
Whether solid or a swarm, a problem that occurs to me long-term in building a dyson structure are damaging flares and magnetic storms from the host star. It seems like the absolute best option would ...
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Time keeping across several star systems [duplicate]
I'm working on a storyline where humanity has spread across a handful of star systems via a device that basically teleports a ship from one system to the next. I have worked out some scientifically ...
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Aliens pressure cook the Solar System, do we notice?
550 million years ago, aliens erected a spherical barrier 1/6th of a light-year (~10,000 AU) in radius around the solar system, centered on the solar barycenter. Things outside the barrier can enter, ...
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Deflecting an incoming star, railgun style
A friend of mine, ɹɐqooɟ, lives in a large globular cluster where stellar encounters and collisions are very common. His civilization is a Type 1.8 civilization, having built half of a Dyson Sphere ...
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Despite proliferation of graphene, why is gold still so expensive in the future?
Right now I can think of 3 important factors determining the trading value of gold and why is it so expensive:
Factor 1 is longevity; this element rarely if ever reacts with anything, particularly ...
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How to Build a "Believable" Fall of Civilization? [closed]
Nice to meet you all.
Inspired by Star Trek: Discovery's Season 3 and "The Burn", I've been re-reading materials where there has been a "Fall of Civilization" scenario and it seems ...
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Surveying the Barrier
This question is linked to a couple other SE:WB questions of mine, which focus on my current worldbuilding project. The setting is essentially this: aliens encased the Solar System in the very distant ...
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Could habitable planets form in an ultracompact galaxy?
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 between ...
user69935
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An effective way for interstellar communication?
Radio waves travel at the speed of light. Communication across vast interstellar distances is difficult due to weak signals and slow multi-year duration. I honestly imagine it to be like old times ...
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Feasibility of a black-and-white FTL drive?
I have an idea for a faster-than-light spacecraft that I would like to run by the expert minds in this community for a plausibility check. Basically the interstellar ship itself is of unspecified ...
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Interstellar war tactics with no FTL capabilities?
I have tried to conceive the most realistic hard sci-fi human/alien conflict scenario without invoking FTL magic. By realistic, I mean “War is the wrong answer but we do it anyway”. Diplomacy has ...
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Would there be artificial gravity on a spaceship that undergoes constant acceleration?
One way of creating artificial gravity is acceleration- gravity by inertial mass.
So in theory, if we would find a way to travel interstellar space by accelerating, reaching near light speed, would ...
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Humans meet a distant alien species. How do they coordinate? - Computers [closed]
Part of a series addressing the challenges of a mutual first contact. Previous question here
Humans meet some distant alien species. They are mutual first contacts. After learning the languages of ...
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Humans meet a distant alien species. How do they standardize? - Units of Measure
Humans meet some distant alien species. They are mutual first contacts. After learning the languages of each other, they begin to share scientific and engineering knowledge with one another, but here'...
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Justification of physical currency in an interstellar civilization?
I have seen a similar-ish question on here, but it doesn't quite match my inquiry.
Suppose you have an interstellar civilization (the means of travel between stars being stable two-way wormholes on ...
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