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Questions tagged [space-travel]

For questions about the process of traveling through space, including in orbit around a planet or moon. Consider also [spaceships]. See also the tag information (click "info") for more details on when this tag applies.

3
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2answers
205 views

Vampires in space

The setting is our Earth of today (2018) with one difference: some Space Agency decided to go back the Moon and built a ship that is ready to depart, using today's technology. For reasons, the crew ...
-1
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2answers
98 views

Free energy in space [closed]

On earth we know that if we rotate a motor electrical energy is produced but dues to friction and absense of force the motor do not rotate continuously. But if we are in Space where friction is zero ...
1
vote
1answer
60 views

Food crops for a planet with short year

Kjør bestillingen 92 umiddelbart. Frøhvelvet skal åpnes, skyttelbussen skal tilberedes. (Execute Order 92 immediately; the seed vault is to be opened, the shuttle prepared)    &...
5
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2answers
125 views

What is a reasonable energy solution for a proposed solar system wide Laser Propulsion array?

In my fiction I'm setting up a civilization which uses Laser Propulsion for moving things between bodies within a solar system (assume Earth/sun analogy). Laser Units have been set up anchored to ...
3
votes
5answers
258 views

Why would people living inside a nebula go into space?

Assuming a sci-fi style nebula, like the thick clouds seen in Star Trek, extending several light years and hosting star systems inside, one of which gave rise to intelligent life up to current human ...
16
votes
5answers
7k views

How do my spacefarers not get crushed accelerating to 0.2c?

Inhabitants of another planet (their biology is yet undefined, and if helpful to solving the problem, suggestions can be included in the answer), have a spaceship in which they plan to accelerate to 0....
20
votes
16answers
6k views

Is it dangerous for a ship's crew to get stranded in a nebula?

Some Context I'm creating a universe where humanity has reached the stars. They've colonized a few star systems and, obviously, FTL drives are a common thing. The part of the story I'm currently ...
15
votes
1answer
2k views

Aritifical Gravity through Rotating wheel generalisation in a spatial 4th dimension

I'm taking the example of a rotating wheel space station, in which artificial gravity is created through rotation due to the inertia inside. The idea in the 3D environment is that the wheel (2D) is ...
3
votes
2answers
90 views

Long-term effects of leaving everything you know - the aging issue

My current ongoing science fiction project has FTL travel that is instantaneous for the ships and their crews, but still, usually, takes years of real-time in the rest of the universe. This is going ...
9
votes
7answers
2k views

Could an astronaut in a near-future space ship survive transit through our asteroid belt?

In the near future we may find cargo ships fleeing space pirates! Given that... It's a small cargo ship carrying 10 metric tons of wheat (cargo volume, approximately 13 m3). Total volume: 100 m3. ...
5
votes
6answers
414 views

How could you tell if someone was messing around with your gravity?

I'm working on a story involving first contact with an alien species that bases their space travel on directly manipulating gravity fields. My question is not about how that would work, but rather how ...
3
votes
2answers
142 views

Considerations for hypothetical ship designs using a gravity generator for propulsion? [closed]

Edit: I'm exploring an idea for a hypothetically possible form of propulsion for a sci-fi story. My question is if, based on what I describe below, other folks might have some ideas about how the ...
-6
votes
4answers
137 views

Is it possible for a “bird+human” creature to fly from one planet to another?

In my story there are multiple planets in a solar system. And each of them are inhabited with different species. The main inhabitants of one planet are "bird+human" things. Is it possible for those ...
7
votes
5answers
1k views

Safety acronyms for space travel [closed]

In the current world, people wear life jackets on small boats, and life-boats are present on ocean liners. Similarly on airlines, they brief passengers about life jackets are under the seats, and air-...
1
vote
5answers
252 views

With light years between us, why talk?

Let's say in the year 2000 we launch a ship to some distant part of the galaxy. If the ship travels with a constant 1 g acceleration for like 28 years (accelerating halfway then decelerating), then we ...
-1
votes
3answers
154 views

How to establish the relationship between exponential development and space exploration and consequences for future prognosis? [closed]

How long might it take to colonize the solar system - and how to make a mostly educated guess? On one hand, we know that we are yet in the very beginning phase to develop technologies to make life in ...
0
votes
2answers
155 views

Peeping at Antipodes: How long would it take to peek around the sun using modern technology?

Assuming humanity was suddenly highly motivated to do it, how long would it take a probe launched from Earth to get into a position to record and broadcast images of the position in the opposite orbit ...
12
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13answers
1k views

What's a plausible-sounding technobabble explanation for Mars to be a forest world supplying Earth with timber?

In the story I want to tell, it's a thousand years in the future and Mars has been terraformed into a forest world (something like the forest-moon of Endor). It's settled in a few small towns and ...
8
votes
8answers
1k views

To Conquer the Earth by Appearing Ship

An alien species has been conquering planet after planet around the Milky Way for some time. They detected intelligent life on Earth a while back and now they decided it’s time to add us to their ...
0
votes
2answers
137 views

How to find earth's relative position anywhere in the galaxy without any markers or brute force exploration?

The idea is that is to find the ancient seat of power of humans which is earth, but no one knows where it is, there was no transmitter nor any markers that will give the relative position. The catch ...
0
votes
1answer
128 views

What materials would be useful in constructing a Space Station?

For the obvious reason of weight, our modern space stations and satellites are made out of metal or lightweight compounds to reduce cost. In a quick Google search, about $20,000 per kg is the cost, to ...
14
votes
12answers
2k views

How can I know where to point my spaceship?

Let's assume we have a working FTL drive and thus interstellar travel is possible, either by traveling at very high speeds or by instant teleportation (the two main subtypes of FTL drives in sci-fi). ...
0
votes
5answers
233 views

How do you motivate workers to conduct dangerous missions?

So, this is for a "space drama" that is set in the not too distant future. The world is running out of resources, but has developed an rudimentary interplanetary travel capability. Several planets ...
6
votes
3answers
256 views

Space shipping lanes that use external systems, is it practical?

I've seen some cool art and scenes from the Cowboy Bebop which had trade lanes made up of what looks like large rings that accelerate and deccelerate a ship. I wanted to replicate a system like this ...
-5
votes
2answers
178 views

How to travel between planets on the same star system in Sci-Fi? [closed]

We know, that to travel to another star systems, we need to use FTL for traveling. But if you need to travel to another planet in the same star system, what type of travel should be used? Is it worth ...
2
votes
3answers
210 views

Can blind people build a spaceship and land on the Moon?

This question is inspired by Could a species develop the tech necessary to land on their own moon without comprehending light? Consider following scenario: a civilization of alien tricksters abducts ...
7
votes
5answers
309 views

The Diet of Space Dwellers

I've looked around the forum but didn't find an answer to this particular question. In short, what food could realistically be produced in a space station assuming current (or near future) ...
6
votes
6answers
2k views

Is it easier to mine asteroids than planets if teleportation technology exists?

Inspired by comments to JBH's answer to The worlds between, the consequences of instantaneous FTL. The Premise A technology for instantaneous travel exists, making it possible to travel to any point ...
1
vote
2answers
129 views

Added Difficulties of Space Flight on Gas Giant Moons?

What additional difficulties might the inhabitants of a gas giant moon face when attempting to launch spacecraft beyond their moon's orbit, especially beyond the planetary system? I presume that they'...
-1
votes
1answer
190 views

Spherical vs Circular(planar) wormholes; possibility? [closed]

I know that 'they' are theoretical and hypothetical, but please justify deep down to your understanding and I'll try to grab-up as much Origin of Problem: Thanks to the fantasy and fiction, there ...
11
votes
3answers
441 views

How to estimate a star's heliopause?

Is it possible to calculate/estimate the size of a star's heliosphere? If so, how? I am working on a semi-near future, sci-fi novel. As part of the technology base, humans are able to travel between ...
-2
votes
4answers
169 views

Why would the Terrans make their Capital so remote compared to their territory?

Backround So, in my world, Terrans, also called humans, have colonized a hefty amount of Milky Way Territory, and have many subjects under their rule, about 200 billion spread across a space about 1,...
2
votes
2answers
259 views

Could near light speed ship dilate time severely enough to explore other stars with out breaking the light speed barrier?

At a constant 1G acceleration it takes a little less than a year to reach near light speed speeds. Time would dilate locally on the ship slowing time for them. Could the time dilation be pushed to ...
4
votes
2answers
144 views

The Crowman race to space!

In this answer https://worldbuilding.stackexchange.com/a/25219/50641 (to the attached question) one of their counter points was "oh, crows use tools, therefore, human advantage negated". That got me ...
-2
votes
2answers
174 views

How to survive in an Antimatter Universe/Dimension?

So, in my Science Fiction story, my character, Bryan, has just gotten (seemingly) the worst punishment anybody could ever get. A group of terrorists have just blown him out of an airlock, near the ...
-4
votes
2answers
134 views

Is there a way to tell if a planet is about to self-implode in 24 hours? [closed]

So, my main characters are kidnapped by a group of anarchist anti-government terrorists, who like cruel and unusual punishments. Instead of just shooting them or blasting them out of an airlock, the ...
3
votes
3answers
229 views

How flat is “Flat Space”?

The idea of "Flat Space", an area of space-time with minimal, preferably zero, gravitational curvature, is an important concept in many Sci-fi universes, often those with "jump-drive" based FTL travel....
7
votes
7answers
961 views

Everyone on starship enjoys classical music. But why? [closed]

This could be rather meta question itself, because you can allways say: Public domain. Yes, I am aware, that most of sci-fi movies have to pay intellectual property fees, so having your crew enjoy ...
1
vote
3answers
190 views

Mapping Stellar Empires? [duplicate]

Any nation needs to have a firm understanding of its borders and controlled territories. How might a empire with FTL technology spanning multiple planetary/stellar systems make a map of their ...
0
votes
2answers
109 views

Is It Safe To Use A Fusion Torch In Atmosphere? [closed]

Would it be safe (little to no ill effects) to use a magnetic confinement fusion torch in earth's atmosphere? Thinking of using it for a shuttle.
18
votes
8answers
3k views

Identifying extra-galactic artifacts

Setting In the near future a group of explorers land on Mars and proceed to explore the cave system under Pavonis Mons. While exploring the gigantic interior of the lava tube, sensors indicate the ...
5
votes
4answers
843 views

What will Mars astronauts do about Dave? [closed]

Note: This is background research for parody/comedy story. So, some below points are not even plausible and I do not care about it. Please do not waste your time commenting and/or posting about ...
38
votes
9answers
5k views

Interstellar war without co-ordination, is fine timing important at these scales?

I've been working, on and off, on a universe with limited FTL based on the "one big lie" principle of sci-fi writing; travel speed averages just a hair over 4 times the speed of light, travel is ...
1
vote
3answers
160 views

How to measure time outside of Earth? [duplicate]

In pop culture, whenever an alien species or someone outside of Earth talks about time, they always refer to time using the words "year(s)", "month(s)", "hour(s)", and "minute(s)" etc which are ...
2
votes
8answers
452 views

how would a spaceship helm “user interface” (flying controls) be designed in detail

When flying a big spacecraft, one needs to keep several things in mind when designing the "user interface" used to control the spacecraft's flight path, or ultimately, the output of the thrusters/...
9
votes
7answers
448 views

What would grand strategy look like in a world with fast interstellar travel and slow interplanetary travel?

The specific situation is the tech in the Battletech universe. The Kearny-Fuchida hyperdrives are jump drives that can travel instantaneously up to thirty light years - being deposited (usually) at ...
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2answers
158 views

Energy generation for spaceships

Consider a near-future situation where humans have begun to explore the solar system, most groups are still working to start a profitable mining operation and only a few ships have gone beyond Jupiter....
2
votes
3answers
383 views

Travelling in space for 6000 years, how many persons are needed? [closed]

So a spaceship is on its way to a new planet. The crew needs to survive during 6000 years on board. They will not get any help and they need to survive on their own. How many persons would need to be ...
36
votes
27answers
10k views

How can paleolithic humans colonise the stars without direct help from aliens and still be primitive?

In my story I have paleolithic era humans who were contacted by aliens long enough ago for them to have used space travel to spread across many planets. I want them to be able to fly and somewhat ...
0
votes
6answers
494 views

Why would spaceships still have acrylic/glass windows when force fields are cheap and reliable?

Force field technology has come a long way. The latest energy-efficient engines can guarantee stable energy output in any situation, making force fields extremely reliable and very cost effective ...