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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.

27
votes
12answers
9k views

Would gas giants work as waste disposal sites?

In my novel, the many moons of Jupiter and Saturn have been colonized, but I'm running into some logistical problems - namely, waste disposal. My first instinct was to dump it on-moon; while this is ...
2
votes
2answers
92 views

Asteroid material that can cause signal distortion

I'm making a hard-ish sci-fi universe where humans colonized nearby star systems and found not one but two civilizations in Alpha Centauri, each at home on a planet orbiting one of the two main stars. ...
17
votes
8answers
4k views

Software that shows space travel accurately in 3d from a physics point of view

An answer to the following question mentions a free online calculator for long-distance space travel. Software to ease my interstellar travel calculations I'm looking for a 3d simulator that ...
1
vote
4answers
133 views

Moon take off without rockets

Take-off in a craft with rockets allows a gentle acceleration that doesn't kill the occupants. Given that the Moon has no atmosphere: Is there any current technology that would allow safe takeoff ...
17
votes
17answers
6k views

Swimming in space. What is the mechanism?

A large (compared to Earth life) species of creatures live in space. They gain energy from interstellar dust and starlight. How they do this is a separate question so not relevant here. However they ...
9
votes
4answers
444 views

What torch-ship engine requires the least complex control system?

A side shot from my series on a computer-less future; see here, here, and here. Project Rho defines a torch-drive as an engine with both high acceleration and high exhaust velocity. A torch-ship is a ...
4
votes
3answers
922 views

Post-Apocalyptic Earth. Escape from Warehouse Moon

In its heyday Earth was a great interplanetary trading post on account of its low gravity moon which was used as a warehouse for all kinds of goods. The Moon was covered almost entirely in large ...
6
votes
2answers
236 views

What does the physiology and biochemistry of a vacuum adapted post-human look like? Part 4: Movement

I am a post-human adapted for permanent life in vacuum and micro-gravity. How might my physiology and biochemistry overcome the following challenges? Please note I have a strong cultural aversion to ...
16
votes
12answers
5k views

A clock for interplanetary travel

Introduction See background information here. 1000 years after darkness fell on Old Earth, humanity is scattered throughout the solar system. Apart from the Harmonious Republic of Mars, there are ...
2
votes
3answers
195 views

Where to have a colony after Pluto?

I have a world where humans have developed interplanetary space travel that allow them to travel to other planets. There is an issue though- the speed is slow, sublight; as an example it will take at ...
24
votes
8answers
2k views

Can you catch a spaceship with a train on the Moon?

In Kim Stanley Robinson’s new novel Red Moon the first few pages describe a method of Earth-to-Moon transportation that I had not encountered before. The idea is to use a magnetically levitated and ...
1
vote
3answers
154 views

Could You Create a Stasis Field to Negate the Effects of Gravity [closed]

So I've been thinking about Stasis Fields lately, and wondering if there would be any way to create a Stasis Field that would prevent a person or object from feeling the effects of gravity from high-...
9
votes
3answers
193 views

Safely exiting zero-tau capsule

Setting is 20 minutes into future - everything is as we know it, or as we can reasonably predict, except the zero-tau capsules. Capsule is a thin mesh of Unobtanium connected to a portable Handwavium ...
3
votes
5answers
2k views

If a space shuttle was going to crash during a botched landing back on earth, is there any way for crew to eject safely before impact? [closed]

If a space shuttle is going to crash during a botched landing back on earth, is there any possible way (emergency vessel, etc.?) for crew to eject and land safely away from the shuttle?
9
votes
5answers
2k views

How would a real modern day space shuttle operate without satellites or any kind of communications signals?

What role do satellites, communication towers, GPS, etc, play in the operation, and specifically the landing, of a space shuttle? If those and any other human-made things suddenly disappeared, could ...
26
votes
8answers
5k views

Do antenna farms on spacecraft make any sense or are they purely aesthetic?

Antenna farm as seen on the USS Sulaco from Aliens (1986) We often see menacing sharp communication spikes and clusters on spacecraft in movies, shows, games, and etc. It makes the ship look more ...
1
vote
4answers
220 views

What kind of fuel would spaceships capable of faster-than-light travel use? [closed]

In my book series, faster-than-light travel is a thing, allowing the fastest spaceships to cross a Milky-Way-sized galaxy in a matter of days. The slower ships could manage that in about 2 weeks. ...
3
votes
2answers
197 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
votes
2answers
96 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
54 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
votes
2answers
120 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 ...
1
vote
3answers
123 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
87 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
408 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
134 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 ...
-5
votes
4answers
134 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
246 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
143 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
153 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
votes
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
1answer
125 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 ...
13
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
228 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
254 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
171 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
202 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
287 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
124 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
163 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
425 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
161 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
254 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
135 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 ...