Questions tagged [space-constructs]

For questions regarding artificial structures that exist in space.

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6
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2answers
190 views

Effect of a destroyed orbital ring falling down on the planet [duplicate]

I'm working on a story where an orbital ring situated in LEO above the equator of an earth-like planet is destroyed which is a calamity for the species that used it. The ring is essential for them and ...
4
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1answer
120 views

Space station design for long-term safety and durability

Notes: I am not using the hard-science tag for now because I do not want to restrict your imagination. However, I will add it if I get mostly speculative answers with no support in actual science. ...
22
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11answers
5k views

How hard would it be to find something in the void between solar systems? [closed]

So, assume that there's a superstructure roughly the size of Pluto (~1,475 miles in diameter is the figure I found) that an organization doesn't want to be easy to find. Hiding it in the void between ...
10
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13answers
5k views

Is a space station using a Dyson sphere like structure to power itself invincible? [closed]

Let's assume we have this super advanced civilization that actually goes around making Dyson spheres around stars. The purpose of this is to capture all the energy of the star and be a hub of the ...
4
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3answers
148 views

Would a laser relay work better on the surface of an airless body or in orbit?

Background: In the early 22nd century, a laser station has been established on Uranus' moon, Cordelia to shoot chunks of frozen deuterium into the inner solar system for fusion fuel. However, the ...
18
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9answers
5k views

What is the largest 'hollow' space structure that can be created?

After reading the following question about anti-gravity, I wondered what the largest hollow structure you can make in space is. None of the questions about hollow earth seem to answer this. To put it ...
1
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3answers
169 views

The most efficient spaceport

In my works of worldbuiling I have constantly come across the problem, How to depict and create the most efficient spaceport possible for an interstellar, super advanced, space fairing species. ...
1
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3answers
137 views

Would it be possible to create a planet sized space station?

Would it be possible to create a planet sized space station, with technology levels close to Star Trek TNG, if so, how long would it take to make it? Think the Death Star and starkiller based from ...
0
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2answers
126 views

Why would someone purposefully cause a nuclear apocalypse? [closed]

In an alternate future, the cold war has never fully ended, as the soviet union never collapsed, but the two super powers have decided to work together in space, resulting in the construction of a ...
4
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3answers
165 views

Would O'Neill cylinders experience thunderstorms, if not how would you generate/simulate one?

ASSUMPTIONS The OC in question is a standard paired OC similar in size to Island 3 5 miles (8.0 km) in diameter and 20 miles (32 km) long. It is a temperate biome akin to southern France with some ...
7
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7answers
2k views

What would combat look like inside an O'Neill Cylinder?

Problem If you were attempting to take over an O'Neill Cylinder without destroying it or the majority of its inhabitants/ecology how would you go about it? What benefits or detriments to an attacking ...
3
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1answer
99 views

How to redistribute weight on an O'Neill Cylinder? [duplicate]

Problem With a rotating cylinder, applying weight to one side and not the other will cause it to rotate off axis and give it a 'wobble' likely causing undesired gravitational effects. Now clearly ...
2
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4answers
164 views

How long would it take to make three hundred spaceships and an orbital defense system? [closed]

I'm about halfway through a story I'm writing, where aliens invade, beat us up, one spaceship blows them all up, etc, etc, and everyone lives happily ever after. Except they don't. So after they chase ...
7
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4answers
221 views

Counterbalancing a Ringworld so it doesn't explode

Ringworlds are a bit of a SciFi staple but as they're commonly portrayed, the large ones have a major problem... they'd, well... explode if they were built out of materials that actually existed. This,...
4
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4answers
223 views

How to adapt the Royal and Ancient Game to Zero-G?

Golf depends on friction, which eventually stops a rolling ball. Air friction seems to not be enough for a golf course that consists of 18 holes with a total length of 1-2 kilometers. This is not the ...
2
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1answer
68 views

Weather forecast for colossal O'Neill cylinders?

I think we can predict with great accuracy what's the weather going to be in a small O'Neill cylinder since we get to control the humidity and air flows, etc but then a tiny variation in temperature ...
11
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3answers
1k views

How do oceans in an O'Neill Cylinder replenish dissolved oxygen?

I am concerned that the centrifugal force will draw out all the dissolved gases from the ocean in a colossal O'Neill Cylinder in the same way blood centrifuges do in lab. Fishes and most marine life ...
9
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3answers
174 views

Can various human-like aliens live together on a space station with a common atmosphere?

My idea is to build a universe with various alien species. There are dozens of different species and every species evolved differently on a different planet. The problem arises when they want to meet ...
8
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4answers
2k views

Which type of star would be best used for a Shkadov thruster to reach Andromeda as soon as possible?

I had Originally thought of using Nicoll-Dyson beams to propel probes and small ships from the Milky Way to as many galaxies as they can reach to turn stars in those galaxies into Shkadov thrusters to ...
5
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3answers
142 views

Could rotating “sub-cylinders” work on an O'Neill cylinder?

I'm working on an Alien-esque pseudo-cyberpunk space station. My idea for the station was a classic O'Neill cylinder with smaller "sub-cylinders" at 90 degree angles along the sides, each ...
5
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5answers
259 views

What method would an average human use to move in one-tenth of earth's gravity with no prior training?

You are standing near a wall in an enclosed space of 50m(L) x 50m(W) x 3m(H) at floor level with 0.1G gravity and earth normal atmoshere. You are of average height and mass. You are suffering from ...
6
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4answers
252 views

Space station scenario feasibility

I have settings with orbital colonies around the earth. First off my idea is, if it is not profitable we would not fund it en masse. Therefore I came up with the idea that in the future we discovered ...
0
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2answers
71 views

What new types of environments are possible on an intelligently designed habitat? [closed]

Humans have taken the stars and are capable of building pretty much anything they want(but the laws of physics are still the same), and a group of them decide they want to make a habitat with a ...
2
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2answers
111 views

What is the force of impact for a failing space elevator given the following conditions?

The local sapient species on a relatively Earthlike planet has constructed a space elevator. It is anchored along the equator. Due to unfortunate circumstances (and potentially divine intervention) ...
4
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2answers
187 views

Would it be possible to build numerous spaceships that could transport 10 million people in the late 2100's?

The crafts would have to contain large farms in order to sustain the immense amount of people, and they'd obviously have to be large and spacious to have good living conditions. I did some research, ...
3
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1answer
203 views

Science of Green Lantern and solid light constructs

Many know that the Lantern Corps of DC Comics are capable of constructing objects of any shape or size out of hard light using their power ring fueled by their emotions. However, I'm wondering what ...
6
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11answers
504 views

Building a spaceship alone in the wilderness

I am currently working on a character backstory for somebody whose fictional character gets sent back in time an era before his species existed (essentially to bronze-age times or even earlier, it's ...
2
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3answers
132 views

Is it theoretically possible to design wormhole gates for space travel? [closed]

In the story I am writing I would like space travel to be as realistic as possible. Wormholes are a theoretical possibility but they are incredibly unstable as well as difficult to manage, but they ...
5
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1answer
126 views

Can multiple space habitats be joined by tubes?

I wanted to create an extremely large space city which will be made up of many different large space habitats of ringed and cylindrical varieties. Although each habitat will contain its own city or ...
6
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6answers
286 views

How to allow a cylindrical habitat (O'Neill or McKendree) to radiate heat to space?

Background I am trying to find a design for a cylindrical habitat that would allow the enclosed cylinder to radiate heat out to space as does the Earth without using mirrors and windows. Problem In my ...
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1answer
89 views

What’s the energy required to traverse through dimensions

Say in the future, humanity has developed technology to the point that it allows them to traverse through other universe, each universe having something either drastically different or not so ...
4
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2answers
237 views

How does one calculate the diameter of a 'space fountain'?

I need to know how wide the diameter of a space fountain's* particle stream is in relation to the mass it's trying to support. It would have to lift its mass at least 40000 kilometers. The vacuum ...
1
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1answer
176 views

How massive can a structure get on the inside of a Mckendree cylinder?

Background A McKendree cylinder is a rotating cylindrical space habitat comparable to the more well known O'Neill model. It was proposed by NASA engineer Thomas McKendree in 2000 as an update of O'...
5
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3answers
231 views

Low gravity space shipyard vs micro gravity shipyard

If you had a device, similar to a Stargate, but that allowed seamless two way transfer, and that could be moved (You could essentially strap a rocket on it, and fuel it from Earth), you could just ...
1
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2answers
122 views

Orbital tether snap like a rubber band?

Let’s say a few centuries in the future, we have captured an asteroid into orbit and built a space station out of its material. The station is a ring that encircles the equator in Low Earth Orbit, ...
3
votes
2answers
224 views

How do you get steel outside Earth?

I'm looking for a more economical and efficient method of making steel for my project Death Star Unlimited, a mega infrastructure orbiting Mars with a mass of 500,000,000 metric ton give or take 1%. ...
4
votes
2answers
151 views

Space elevator off Europa without running into a nearby moon?

Would it be possible to build a space elevator off Europa? (The space elevator would only be for the purpose of getting items out of Europa's gravity well relative to Jupiter. At that point, the ...
26
votes
18answers
7k views

What measures to put in place to reduce airlock being used for murder?

Consider a futuristic world where space travel and colonisation of the solar system's planets is an everyday reality. In space vessels, the airlocks are used quite often to execute people. It's fairly ...
4
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6answers
656 views

Artificial lighting for a closed O'Neill cylinder

I am struggling to picture what placement of artificial lighting I should use for my O'Neill cylinder design for the daylight hours, a strip light along the centre of the cylinder would obstruct the ...
7
votes
4answers
269 views

How could a skyhook stay in orbit with no human involvement for thousands of years

In the story I'm writing, three humans with stone-age technology and no knowledge of space accidentally awaken thousands of cryogenically preserved humans. These humans immediately get to work on ...
3
votes
1answer
100 views

Can a planet's artificial ring always face the sun?

A habitat/space harbor ring encircles an ice giant crossing both poles (polar orbit) and rotating to create artificial gravity. Can the ring also precess in synchronization with the planet's year, so ...
2
votes
1answer
149 views

How much sunlight can I get into my O'Neill cylinder and how much light needs to be artificial?

The cylinder is 32 km long in total, 8 km in diameter, with 3km long endcaps, resulting in a habital area with a length of 26 km (= and an area of cirka 754 km2). The main body of the cylinder is ...
1
vote
1answer
81 views

Speed of elevator on rotating wheel space station

Assuming a passenger was sitting in an elevator in a rotating wheel space station, as depicted in the movie 2001:A Space Odyssey and based on this question Elevator on rotating wheel space station, ...
10
votes
3answers
461 views

Hurricane-force winds or gentle breezes in an O'Neill Cylinder?

Let's consider an O'Neill cylinder with a radius of 3.2km and length of 20km. In the classic O'Neill design, we have three large axis-aligned windows in the shell, alternating between purlins of ...
4
votes
4answers
3k views

What would happen if the ISS made an uncontrolled re-entry through Earth's atmosphere? [closed]

Total annihilation? Global impact? Localised consequences? To give my question a little more context: the International Space Station (ISS) is supposed to be retired sometime in 2020 due to having ...
3
votes
2answers
120 views

Would the Earth appear to be spinning off center when viewed from geostationary orbit?

In 2001:A Space Odyssey, from Space Station V the Earth appears to be spinning around a center that is near the edge of the planet. Phone call from space station scene If the same station (300 meters ...
2
votes
2answers
67 views

Transmitting energy from the upper part of a space fountain using the stream of rotating masses

Imagine we have a sufficiently tall space fountain positioned at either of the Earth's poles, such that the upper station is permanently within view of the sun. A large array of solar panels could be ...
0
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0answers
67 views

Would bow shooting work different in an O'Neill cylinder? [duplicate]

The setting takes place in an Island 3 O'Neill cylinder. All type of bows included. I wonder if there are things to take into consideration when describing how a person would target and shoot, as well ...
5
votes
3answers
273 views

Is it possible to have multiple different climates within one O'Neill cylinder?

The illustrations of O'Neill cylinders I have come across with so far allow unrestricted view through the whole tube. Some are more playful with topography but still, there is a visible end. Are ...
7
votes
2answers
219 views

Would a Hot Air Balloon work in an O'Neill Cylinder?

We had a long discussion in my office about this - if we were in a smallish 500m diameter O'Neil cylinder would hot air balloons work?

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