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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5
votes
2answers
126 views

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 ...
7
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2answers
389 views

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 ...
6
votes
7answers
693 views

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 ...
3
votes
4answers
173 views

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 ...
2
votes
5answers
824 views

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”. Im not trying to ...
2
votes
2answers
186 views

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 ...
3
votes
2answers
155 views

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 ...
25
votes
12answers
8k views

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'...
28
votes
17answers
6k views

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 ...