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For questions about the use of a mobile space station used to colonize the stars. A generation ship travels well below the speed of light and relies on natural processes of reproduction to support the number of colonists. Entire generations of people will live, reproduce, and die on board a ship ...

10
votes
5answers
744 views

Hiding a handful of immortals on a Generation Ship?

I have a handful of immortals that have spent the last 6000 years stuck on planet Earth. They really, want to get out of here. They missed their chance back in Egypt before The Fall of the Pharaohs**. ...
2
votes
1answer
155 views

Generation ship population growth

I have taken several things into account when it comes to population growth. First off, it is likely that on a generation ship it would be 100% natural conception so I need to take into consideration ...
2
votes
3answers
138 views

Generation ship: How big exactly?

So first off I will assume that the generation ship has a reasonable capacity of 1 billion and 45,000 people are the first generation on it. Also assuming an 8/1000 per year death rate(the average ...
1
vote
2answers
99 views

Would there be any bacterial illness aboard a generation-ship? [closed]

Okay, so I know that severe, life-threatening illness such as rabies which has a 100% chance of death without treatment and Ebola which has a 50% chance of death would not be allowed because that ...
4
votes
2answers
292 views

How much ice do I need at 0.79c to protect my megastructure

Ok I have a moon, or cored out moon, that is a generation ship. I really do: I built it by mining out one of the rock/ice moons around my solar systems gas giants (not earth's solar system). Its ...
3
votes
3answers
165 views

On a generation starship headed to a nearby planet, what would be the most beneficial survival courses to take? [closed]

In my world, there is a generation starship cruising through outer space. It’s been a long time since they have stepped foot on a planet. To make sure that everybody is safe, the leaders of the ...
2
votes
2answers
131 views

Reasonable motivations to build a Generation Ship [closed]

What reasons could motivate the building and subsequent launching of a million-population generation colonization ship in a near-future ambientation? Earth is not in immediate danger, there are not ...
-1
votes
4answers
102 views

Motives for preventing a generation ship from reaching its destination - but not destroy it [closed]

The home planet of a race is completely annihilated (hit by another planet or something), but they managed to launch a generation ship beforehand, and a few thousand people go on a century-long trip ...
1
vote
3answers
164 views

How can the newly-discovered inter-galactic matter be harvested by inter-galactic mega-generational ships?

Scientists have just released details on their discovery of inter-galactic baryon material - "Dark Matter" that turns out to be regular matter, except that it is 'dark' - dispersed throughout the ...
0
votes
1answer
157 views

A Completely Self-Sufficient Generation Ship? [closed]

Is it possible for there to be a generation ship that was completely self-sufficient? An airtight vessel that used plants to create food and oxygen, and reused everything with a tight hold on ...
5
votes
8answers
373 views

How do you detect a rock in interstellar space?

You are on a generation ship in interstellar space, between star systems. We know that there are rocks whizzing around out there - escaped asteroids, bashed planets, we have even put a few artificial ...
4
votes
7answers
252 views

What would the economy look like on a generation ship?

On a million-person strong generation ship in space for upward of a century (multiple generations will live and die on the ship), what would the economy look like? Scenario: The crew running the ...
1
vote
5answers
469 views

Starting Sex Ratio - Generation Ship

Aliens have abducted 10,000 people and placed them on a generation ship, a really big one, for the purpose of seeding the stars with our species, which is nice of them. What ratio of men to women ...
5
votes
9answers
2k views

What's the feasibility of using the earth as a generation ship [duplicate]

The sun is going out, so we decide to use the earth as a generation ship. We plant bombs in various locations of earth's crust and core, which uses a portion of the earth as propellant to send the ...
11
votes
8answers
1k views

Could humans survive on an alien generation ship?

In the near future (next few decades) a giant spaceship is detected as it decelerates on its way into the solar system. It heads for Earth orbit, but a few weeks before reaching Earth, it veers away ...
1
vote
6answers
235 views

What night sky would look like on a generation ship?

Hail folks. I've been reading a lot about generation ships lately and this occurred to me: imagine a ship that tries to emulate perfectly life on earth (atmosphere and all). Leaving aside the ...
3
votes
4answers
173 views

Is blood pressure a good restriction?

I'm researching who to let onto my generational ships. I have figured that certain pre-existig inheritable medical conditions should be screened out of who makes the cut or not, focusing on ...
5
votes
5answers
320 views

Civilian or Military Government on a Generational Ship

The generational ship is a small closed system, nothing comes in, nothing goes out. The population is under 10 thousand and stable, it's in the middle of its run. No surprises, just day to day routine ...
8
votes
3answers
347 views

Generation ships: Over coming agoraphobia when you land

Setting So for generations a ship has been traveling through space. After reaching their desired destination you are left with a group of people who have been used to their largest spaces being no ...
0
votes
1answer
183 views

An O'Neil cylinder vs. A cylinder with vertical layers

If humans had access to artificial gravity technology similar to Star Trek in terms of holding people to the floor, and if faced with annihilation and forced to build a generation ship to escape Earth,...
-3
votes
4answers
840 views

Monogamy vs Polygamy [closed]

When the humans start mating on my generation ship(so after survival training), there should be at least 100 pregnant women as a result. I mean per 1000 women in the united states that are married ...
14
votes
9answers
2k views

Should I use base-10 or base-12 numbers in my story? [closed]

My aliens have 2 thumbs for a stronger grip and the 2 thumbs are on opposite sides of the hand. However since there are 6 fingers total per hand and 2 hands my aliens naturally use base 12. +1 for ...
1
vote
4answers
269 views

How does a crash landed generation ship's crew survive?

A little while back I asked why a crash landed generation ship would fall back to the stone age, but now I realize that I had the exact opposite problem. Without advanced technology, and stuck on a ...
39
votes
29answers
10k views

Why would a crash landed generation fall back to the stone age?

Background In the mid 22nd century, a super plague has killed 99% of human life, many survivors are killed in the ensuing riots and fighting. The few billionaires that are hiding in their bunkers ...
15
votes
7answers
516 views

How do you circulate cryoprotectants through the human body?

Context if you're interested The main problem with freezing living things is that the cold tends to damage tissue. Ice crystals form between cells, dehydrating and shrinking them, and preventing ...
2
votes
3answers
214 views

Generation ship: Too restrictive requirements? [closed]

I have started rewriting my generation ship story and the first scene after the background info(just a little to start it up, not a lot) is where an alien named Pistol Star decides who is to go on the ...
1
vote
1answer
52 views

Humanoid Alien basking and ship shifts

I just realized 1 problem with 2 shifts on the generation ship. My aliens when they wake up, bask in the infrared for up to 4 hours. Even the robots that they have can't compensate for 4 hours of ...
-3
votes
2answers
205 views

Generation ship: Artificial sunlight

The energy source both in terms of fuel and electricity on my ship is nuclear fusion. Very precise nuclear fusion: there is no helium fusion until there is absolutely 100% helium in the main fusion ...
8
votes
15answers
4k views

Could ships in space use a Steam Engine?

When in space, the amount of force required to move goes down drastically, due to the virtual lack of drag. In this environment, would be feasible for engines in space (more specifically belonging to ...
3
votes
3answers
293 views

Ideal size for a relativistic generation ship?

Assuming the ship has access to fusion power, a large volume of solar panels, and crude antimatter power generators (say maybe 1 gram a day per generator, or whatever is reasonable for technological ...
-2
votes
3answers
444 views

How big can I make a spaceship? [duplicate]

Let's say that the most powerful nations on Earth (with a couple hundred billionaires) have decided to build a generation ship. The reason for them leaving is out of the scope of this question, but ...
5
votes
3answers
349 views

Colony Ship … Ship

In my world the human race exists on an infinite plane; 250,000 years of history conspire; things happen; and BOOM: a modern empire that controls what it though to be the "world" embarks on a new age ...
3
votes
4answers
669 views

How to Prevent Dictatorship on a Generation Ship?

On a Generation ship, absolutely everything has its place and everything is in its place; everything is recycled and no waste is permitted. By the way this sounds, it seems near impossible for the ...
8
votes
8answers
1k views

How do I make oxygen for a generation ship?

On a generation ship, the people living on it need oxygen, lots of oxygen. More than they can realistically carry, thus a generation ship must be able to create breathable air from relatively common ...
58
votes
21answers
16k views

I don't want to live on this planet anymore

I don't like the direction where mankind is going. We spend more resources to build tools which allow us to watch cat videos than on curing cancer. One day I decided to say enough, and leave this ...
2
votes
0answers
105 views

Population of a de-novo human colony in 1,000 years on an Earth-like planet [closed]

If a highly technologically advanced (and educated, healthy, genetically diverse, etc.) group of 200 people colonized a planet, how many people would there be 1,000 years later if the planet they ...
5
votes
3answers
266 views

Technological Underdevelopment of Colony [closed]

The Setup Let's consider that the generation ship leaves Earth for the Wolf system at a speed of 0.01c in the year 2100. This generation ship is created from a hollowed-out asteroid and is piloted by ...
4
votes
1answer
1k views

How Long can someone be Cryogenically Frozen?

In my story, the characters encounter someone who has been frozen cryogenically for a very long amount of time, and woken up. Assuming we have the technology to put someone into suspended animation (...
2
votes
1answer
443 views

On a generation ship, How many different families would you have to have to prevent inbreeding [duplicate]

Outfitting an generation ship. How many unrelated people would you have to have in order to have a big enough genetic pool for mating to prevent inbreeding?
7
votes
6answers
2k views

How many colonists could fit on a 2km long multi-generational colony ship?

I'm planning on sending a colony ship on an extended, multi-generational voyage to a distant star. My colony ship is an oblate spheroid, 2km long on its long axis and 1km across on its shortest axis. ...
13
votes
12answers
1k views

Renewable energy in space

I'm working on a story set in a generation ship traveling through the stars. Its propulsion is a solar sail, which will accelerate it over many decades to a substantial fraction of the speed of light. ...
39
votes
11answers
6k views

What would people on multi-generational ships wear?

Conventional materials used in today's textile industry are not sustainable. But 'natural' materials (silk, cotton, ...) and synthetic (polyester, ...) require a lot of resources to produce and then ...
3
votes
4answers
212 views

How to implement radical cultural mindset shift?

Generational ship problem again: Earth, far future: Generational ship left Earth for 20 generations long (600 years) voyage to another system. The ship is well built and even the people survive on ...
10
votes
10answers
1k views

Cultural norms regarding Law and Order on Generation ship

Earth, far future: We built multi generation ship which can get 20 000 people to another solar system in next 20 generations (600 years) For scope of this question assume that ship itself is well ...
8
votes
5answers
560 views

How might a colony treat the arrival of a new generation ship?

Assumptions Space travel is hard. Interstellar travel takes a long time. Chances for a successful trip and colony becoming self-sustaining are not considered super high. Therefore, each colony will ...
15
votes
5answers
864 views

Would generation ships encourage a caste system?

The Setting Imagine a generation ship of 10-20 generations (200-400 year trip). The generation ship is divided into living crew and frozen eggs. Upon reaching the destination & for genetic ...
7
votes
1answer
328 views

Size for bubble-ring generation ship

I've been thinking that the natural manner for interstellar dispersion of humanity with relatively hard science is with permanently habited nomadic generation ships. Instead of building a ship, going ...
44
votes
17answers
6k views

Society rules for marriages and love on multigeneration ship

Earth, far future: We built multi generation ship which can get 20 000 people to another solar system in next 20 generations (600 years) For scope of this question assume that ship itself is well ...
6
votes
1answer
575 views

Launching a Generation Ship

The human race has colonized the solar system with permanent settlements on all of the inner planets and outposts beyond. Vast space stations pepper the voids between orbits and massive mining/...
15
votes
6answers
1k views

Piracy and generational starships

What would be the psychological effect on the inhabitants of a generational starship, if they discovered that powerful pirates were on course to intercept them 20 generations hence (~600 years), and ...