Questions tagged [space-constructs]

For questions regarding artificial structures that exist in space.

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10 votes
17 answers
2k views

How might derelict space ships/stations be only partially salvageable?

My setting is a fantasy where the average space-trekker subsides on scrapping derelict ships from a distant golden age in the past to maintain their own, with only the corporate rich being able to ...
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5 votes
3 answers
151 views

What kind of construction material would an advanced intergalactic civilization use to build megastructures?

In my novel, an alien species whose name is temporarily “Alphas” is a Kardashev Type II Civilization and has an entire galaxy under their control. My novel focuses on the interaction between the ...
5 votes
1 answer
115 views

Space elevator counterweight station keeping

I working on a story, and there is a space elevator. I know that moon and sun have a gravitational effect on bodies in orbit. And if a heavy asteroid was used for counterweight, wouldn't it require a ...
7 votes
7 answers
3k views

Is it possible to make a self repairing Whipple-shield that doesn't loose atoms to the environment?

I am building a space station that is supposed to last until the heat death of the universe. This space-station has access to practically an infinite amount of electricity, but since it has no active ...
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8 votes
8 answers
4k views

Quantum supercomputers in orbit?

I have been wondering if it would be a good idea to exploit the natural coldness of space to create the conditions needed for quantum computation at a large scale. The average temperature of space is ...
6 votes
15 answers
3k views

Is there any practical reason to keep a primitive civilization on an artificial habitat

A planet with an early civilization (Middle age like) is doomed to be destroyed by an unstoppable event. So an advanced civilization decides to do a planetary evacuation to save the species and their ...
3 votes
3 answers
196 views

What's the largest population we could sustain indefinitely on a distant space station?

Imagine that humans put a space station in orbit around something further than 0.5 AU from Earth. So: not Earth, not the Moon, none of our Lagrange points -- none of the "easy" spots. The ...
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9 votes
4 answers
2k views

Would a hollowed out world be mechanically stable?

I am working on a universe where humanity has expanded across the stars. Humanity has access to a Dyson-Sphere-like technology level (1). The Capital is not the Earth anymore but Mercury. To build ...
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3 votes
4 answers
151 views

Why would a bio-mechanical Dyson sphere need to abduct and subsume an entire sentient species every 30-to-50 years?

THE SPHERE Up in space, there is this massive Dyson sphere, with a radius only slightly smaller than the earth's moon. It's made up of a creepy fusion of organic matter and mechanical machinery and is ...
  • 1,413
11 votes
7 answers
2k views

Evacuating earth in favor of a off-world habitat: Just how many people can be saved?

In 2024, NASA detects a pair of planetoids, each the size of the earth's moon, careening towards our solar system. The good news is that they're set to enter earth's orbit without any collisions (how ...
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8 votes
2 answers
576 views

How would a sky with extreme kessler syndome look like?

A few decades ago the Third World War destroyed Earth. Space infrastructure was considered a priority target by both sides. Orbital space was in the years before the war was filled with skyhooks, ...
1 vote
3 answers
155 views

How might a dragon escape from these advanced humans? [closed]

THE DRAGONS When standing on all fours, a typical full-grown dragon is about 3 times as tall as a human. They are quadrupedal with four legs, opposable thumbs on the front legs, and two or four wings, ...
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-3 votes
2 answers
238 views

Possible population levels in a Kardashev Type 2 Scale civilization

Acording to Futuretimeline a type 2 Kardashev society could be achieved around the year 3100 when science is advanced enough to allow the creation of a Dyson Sphere and due to its size it could house ...
7 votes
4 answers
163 views

Controlling Air Temperature on a Futuristic Spacestation with Iron Age Technology

The Setting World consists of humans with primitive technology living within an asteroid space station built by their technologically advanced ancestors. A lot of knowledge has been lost, obviously. ...
8 votes
1 answer
114 views

Ocean tides on a Banks Orbital

Consider a Banks Orbital, a space station three million kilometers in diameter, rotating once per day for 1g artificial gravity, intermediate in size between a Bishop Ring and a Niven Ring: https://...
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38 votes
8 answers
4k views

What would happen to a star if most of its energy were reflected back at it?

For simplicity, lets use our Sun as the star. Next, a dyson sphere is built around it (completely enclosed solid sphere, not a dyson swarm or network, etc.). Handwave how it's built, it's not ...
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0 votes
1 answer
95 views

Effects in space on a human standing to the side of the muzzle of a huge rail gun when fired

The setting. Space, the inner asteroid belt. An LNCHR ship is anchored to an asteroid without atmosphere. A LNCHR ship is a ship with two main facilities: A space crane to raise the slugs filled with ...
  • 3,063
3 votes
0 answers
135 views

How would the 'sky' look in a Stanford Torus?

I hope this is focused enough: my question boils down to: "How do people living in a Stanford Torus experience the sky?" Context: Operating on the assumption that we're in a fairly typical ...
-2 votes
2 answers
82 views

Lift descent time from a Geostationary spacestation (Earth-like planet)

The question is simple. I have an Earth-like planet with a space station. This space station is "anchored" to the surface via space-lift (scifi materials are used to justify this). I wish to ...
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15 votes
9 answers
3k views

What is the safest and most extravagant place for an interstellar emperor to make his palace?

Every evil galactic empire has an emperor’s palace. From the Goa’uld to the Sith Empire to House Harkonnen, every emperor has one extremely lavish but heavily defended structure they call home. My ...
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3 votes
2 answers
207 views

How wide can you make an orbital ring?

How wide can you make an orbital ring? This question is simple. The orbital ring is a concept in which a ring encircles the earth (or other celestial body) and revolves around it so that the ...
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5 votes
12 answers
473 views

Warfare in a universe with FTL on rather fragile platforms? [closed]

How do you imagine the large picture of space warfare would shape into in a universe with the following characteristics: There is FTL, but it's just available in very large and expensive platforms, ...
5 votes
4 answers
190 views

What (natural) phenomenon could cause an earthquake on O'neill cylinder?

There is an O'Neill cylinder about 10,000km long and 10km wide in diameter orbiting a blue giant star. The crew on board have been complaining about the tremors or sometimes a powerful 6.8 magnitude ...
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6 votes
2 answers
1k views

Help Fix My Space Elevator - Untapered Steel Cable

I think I have made a mistake somewhere in my design of an untapered steel cable space elevator down to Earth. I was building this as a design reference to figure out how much stronger "stronger&...
3 votes
1 answer
130 views

Is using tennis racket effect on O'Neill cylinder to create day night cycle cost efficient?

Imagine a diameter 1000km long O'Neill cylinder orbiting a dwarf star, it acquires most of its energy from the star directly. This space station is designed for research purpose but it has a ...
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6 votes
6 answers
2k views

Can mirrors on the moon allow solar panels to operate at night?

Solar panels cannot operate at night. If we put self-adjusting mirrors on the near side of the moon, they could reflect sunlight back to the dark Earth, allowing solar panels to operate at night. How ...
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3 votes
3 answers
182 views

Would spacecraft suffer from fevers?

Spacecrafts produce a lot of heat, which must go somewhere if the inhabitants don't want to die. And in space, the only way to get rid of the heat is to radiate it away One way of achieving this would ...
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3 votes
1 answer
223 views

What would weather be like in an O'Neill Cylinder with windows?

I've got an O'Neill Cylinder that's virtually identical to Gerard O'Neill's original design, only scaled up a bit to allow for more surface area. The cylinder is divided into 6 sections, 3 windows and ...
3 votes
4 answers
280 views

How to Create the Galactic Habitable Zone

Our galaxy consists of a wide number of stars, anywhere from 100 to 400 billion stars, with just as many number of what are known as "habitable zones", in which liquid surface water is ...
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5 votes
2 answers
388 views

What will real space vehicles look like in the future?

Most sci-fi today is imho unimaginative and unrealistic when it comes to future orbital and interplanetary vessel design. What will spaceships and habitats look like when we build them in zero-g using ...
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7 votes
2 answers
114 views

How close can a launch pad be to a lunar base?

This is for a base that has been built up into a big, complex place. For the radiation safety of long-term residents, the walls are very thick. There are windows, that are quite large. They have quite ...
6 votes
1 answer
185 views

O'Neill Cylinder atmosphere on Moving "Day"

In short what effect would thrust induced pseudo-gravity have on the atmosphere of a sealed cylindrical habitat that was already generating spin induced pseudo-gravity? Assume that the thrust is along ...
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2 votes
2 answers
177 views

Could humans survive in the solar system if the earth was destroyed? [closed]

In this setting humans have settled all around the solar system but the bulk of the population is still in earth however an asteroid wiped out all life. Now can humans sustain themselves with whatever ...
1 vote
1 answer
101 views

What orbital structures could be raised around a gas giant's moon?

My narrative project takes place on an habitable moon (0.7 earth masses) orbiting a gas giant 3 times the mass of jupiter at a distance of about 1003000 kms and is in a 5:2 spin-orbit resonance with ...
3 votes
1 answer
181 views

Could a space faring civilization extract valuable resources from a gas giant?

I have been developing an advanced civilization inhabiting a world orbiting a gas giant about 3 times the mass of jupiter, the conditions have already been tuned to allow life to develop over its ...
2 votes
7 answers
280 views

A big primitive computer in orbit, very big, powerful but old technologies from 80's, V2.0 on-topic revamp

I have to point out, it is an attempt to make this on-topic, all thanks to @JBH, so tell us in the comments how well we did. the old one is history now. 50 years ago my grandfather created humanity's ...
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7 votes
4 answers
390 views

How best to arrange a network of light-focusing satellites closely orbiting the sun

It is the not-too-distant future in an alternate timeline, and humanity has tripled-down on solar power. We built a network of solar focusing satellites that orbit Sol at close range (so they can ...
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3 votes
5 answers
1k views

Why does my arcology let light in, when it was originally a sleeper ship

In my story the protagonist lives in an arcology, but this is not just any arcology. Over a 100 years ago, a global war fought between those who sided with a massively distributed and rather 'insane' ...
6 votes
2 answers
642 views

How would a dirty space station with no artificial gravity look?

Just a weird question that popped in my head, but since the only real space station in existence always keeps itself squeaky clean, I wonder how one that doesn't have cleanliness as high priority ...
6 votes
4 answers
251 views

how would a semi-permanent colony orbiting Jupiter protect itself from radiation?

It seems like the Jupiter system is especially attractive in terms of natural resources, and while I assume the majority of any extraction labor will be performed by machines, I also figure there will ...
  • 10.1k
4 votes
1 answer
129 views

Dyson swarm and Coronal mass ejections - generating electricity

This is the second of two questions. Same introduction. A civilisation on Earth has just begun expanding with a Dyson swarm, which is a Dyson sphere but made with many satellites, to prevent ...
  • 29.7k
6 votes
4 answers
534 views

How would a civilization protect a Dyson swarm from solar flares and coronal mass ejections?

This is the first of two questions. Same introduction. A civilization on Earth has just begun expanding with a Dyson swarm, which is a Dyson sphere but made with many satellites, to prevent structural ...
  • 29.7k
1 vote
1 answer
126 views

Hypothetical Material used to construct shell for (this) shell world

Hypothetical materials used to construct (this) shell world As there are multiple definitions for shell world, this needs some clarification. In this case, a shell world refers to a body with the ...
-1 votes
4 answers
171 views

How much engineered "sand" I would need to build an Orbital Tower that reaches the ISS?

Well, I do know that there are questions about space towers that have already been asnwered, however, none of them with today's technology, such as engineered sand. "Sand Castle Holds Up A Car! - ...
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15 votes
10 answers
2k views

What will it take to get 1,000,000 people living in space habitats?

Sure, land is expensive here in downtown Metropolis, but lots of cheap land to build on even a few dozen miles out, never mind in the backwoods, or in flyover agricultural lands that rich, self-...
9 votes
8 answers
2k views

How long will it take for the off-World population to exceed Earth's population?

As I type these words in March 2021, there are numerous private companies developing engineering solutions for reliable, high-capacity and relatively cheap access to space. At this point in time, it ...
-1 votes
3 answers
585 views

A big primitive computer in orbit, very big, powerfull but old technologies from 80's, what is a potential fiat money value for its use? [closed]

This question about the economy of technological solution, there 800 of such on wb Was looking for materials for the answer to the question Semiconductor foundries are a thing of the past. Rebuild the ...
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1 vote
3 answers
164 views

Kessler Syndrome, but with extremely small particles

Congratulations! You're the new leader of the future UN(Unified Earth Country governing body), and you want to push for space travel for all. But at this point(in the futures), centuries of space ...
13 votes
9 answers
6k views

I want to build a weapon targeting Interstellar distances. How viable are railguns?

I am in a timeline which would be tens of thousands of years advanced from yours, and humans have colonized a significant portion of the stellar neighborhood, multiple thousand light-years across (...
1 vote
0 answers
63 views

Would it be possible to mine the metallic hydrogen from jupiter with our current technology? [duplicate]

Simply put, metallic hydrogen is obtained at absurd atmospheric pressures, becoming a stable liquid with very interesting properties. As a super conductor or simply the most efficient fuel that ...
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