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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.

14
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1answer
550 views

Scaling Up Internal Mass Drivers?

Internal mass drivers are a potentially useful space drive, due to the ready availability of reaction mass (you can use anything from spare parts to literal dirt as propellant). However, on long ...
0
votes
1answer
136 views

What will it cost me to travel through Time? (Part 1: Travelling forwards in Time - Time Dilation)

There are many questions on Worldbuilding about what item(s) a time traveller should take back in time in order to alter past events or even simply to survive. There has never as far as I know been ...
-4
votes
1answer
82 views

What do you think about pulsed ntr as a low end torch drive [closed]

Can pulsed ntr be a good torch drive. Atomic rocket says that with some development it can be a low end torch ship. Suppose extraction of hot fission fragment is possible and and also better cooling ...
49
votes
22answers
12k views

How to prevent superluminal traveling idiots from wrecking half of the universe?

Linked but not a duplicate of this question. An example of the problem During the last Star-Wars movie, I was dumbfounded by the sheer stupidity of admiral Holdo's move, during this particularly ...
1
vote
2answers
97 views

How Long Would Interstellar Expansion Take at Our Current Population Growth in This Circumstance?

FTL (Faster than Light) travel exists,taking around 88 hours 48 seconds to travel 1 light year. FTL communications also exists and takes only 53.28 seconds to travel 1 LY (Light Year). Jumps longer ...
4
votes
9answers
608 views

Why would a group of non-astronauts be sent on a space mission? [closed]

Question (inspired by this question, and of course the 1998 classic Armageddon) Is there a conceivable reason that NASA or any equivalent space agency (ESA, Roscosmos, etc.) would need to send non-...
-2
votes
2answers
107 views

How to physically force a remotedly controlled cannon to shoot? [closed]

Imagine there is an advanced spaceship. It's huge, and it's equipped with cannons operated by some kind of advanced energy source (atomic and upwards). This source is located in the same room as the ...
6
votes
4answers
572 views

Why should astronauts grow and eat Caulerpa taxifolia, the world's biggest single-celled organism?

Caulerpa taxifolia, an algae species popular with aquarium owners, is the largest single-celled organism known to us as of today. It is notable for being able to regenerate from any part of the body ...
13
votes
3answers
316 views

Could you carry a wormhole through another wormhole?

Okay, let's assume that travel between star systems is done through stable, stationary wormholes on the outer boundaries of each system. This alone is slightly magic for now, of course, but let's roll ...
9
votes
11answers
2k views

Harvesting automated war machines

Let`s say there is a planet on which fully automated machines capable of self replication, once belonging to several factions of highly advanced aliens, now extinct, are waging war against each other. ...
0
votes
2answers
80 views

Effects of long term exposure to a non-earth like rich atmosphere

Imagine that humanity found a rocky planet with earth like gravity, atmospheric pressure, and temperature, orbiting a sun-like star. The only problem is that the planets atmosphere is that it is ...
13
votes
2answers
3k views

Square thrusters on spaceships

My question is pretty basic, would square thrusters and RCS ports have any real drawbacks over round ones? I know that angles on windows for airplanes is a problem because of the pressure, so I don't ...
17
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4answers
2k views

Would a sleeper ship need artificial gravity?

If all of the crew and passengers of an interstellar craft were in suspended animation except prior to Earth departure and just before destination arrival, would they need artificial gravity (through ...
4
votes
1answer
309 views

Interstellar Propulsion for Hard Sci-fi Novel

Hypothetical: Hundreds of years into the future. Humanity needs to travel to exoplanets quickly. I'm aiming for hard sci-fi. What kind of propulsion can travel people at 0.1 - 0.9 lightspeed? Is it ...
4
votes
4answers
214 views

How long would it take a matter-antimatter GeV gamma ray laser photon rocket to get to Ross128b (11 light years away)?

I'm writing a colony story, and I want my ship to colonise Ross128b, which is 11 light years away from Earth. I need the characters to be alive when they get there, but it's okay if they've aged ...
9
votes
9answers
1k views

The Colonist - Part II: Landing

This is the second part of a series of questions I'll ask about a self-sustaining colonization ship. I'll keep editing this post as things unfold. If you can, check out the other questions of this ...
6
votes
4answers
818 views

Potential system to system travel?

So one of the ideas I've come up with for system to system travel, in the early colony stage of my world, is using fuel boosters to start the journey and then to reach the required speed for the ...
21
votes
9answers
7k views

Could common people be ready to go to space in a matter of days?

Let's say that suddenly NASA needs my characters, a party of scientists without prior experience, to go to space with a Space Shuttle-like spacecraft for a seven days mission. They only need to do ...
7
votes
4answers
212 views

Is it possible to hide a base in the Kuiper Belt?

With the Kuiper Belt being composed of well over 100 million objects - some grand, some insignificant - is it possible to hide an asteroid base from enemy sensors within its confines, combined with ...
41
votes
32answers
10k views

Why would a previously spacefaring civilization become unable to build another interstellar ship?

I'm writing a story in which a civilization previously capable of (firmly technobabble-based) FTL travel has become stranded, orbiting an isolated star with no rocky planets. (There was a planet, but ...
9
votes
6answers
3k views

Would this design be useful for surviving relativistic impacts?

Let's say that I've developed a new engine that can accelerate at 1G continuously. Within about a year, I'm nearing the speed of light. Naturally, I recognize the danger of collisions with gas and ...
7
votes
3answers
301 views

Let's plot a course between Earth and Gor

We know that Gor, or Counter-Earth, is not stable in a long-term sense. Let's handwave that away, or assume that we are dealing with a temporary span of time in which the instability is immaterial. ...
5
votes
3answers
461 views

The Colonist - Part I: Construction

This is the first part of a series of questions I'll ask about a self-sustaining colonization ship. I'll keep editing this post as things unfold. Part II - Landing Edit 1: Added two movie references ...
6
votes
3answers
107 views

Anchoring a Deimos base

Some astronauts have just arrived in Mars orbit! They're fixing to set up a small refueling station/outpost on Deimos. One problem, how might they keep their small habitat and associated structures ...
0
votes
1answer
85 views

Semi-Brachistochrone, Is It Possible?

Would it be possible for there to be an almost torchship (essentially a very, very weak one) which could fly almost brachistochrone trajectories? So instead of a full on brachistochrone, where you ...
9
votes
6answers
804 views

Are fly wheels a valid means of energy storage for powering a large space station?

This is something that was just offhandedly mentioned in a Sci-Fi book I read once and as I am now writing one myself I thought I might use it. The scenario is that I have a ship approaching a warp ...
10
votes
2answers
940 views

What sort of acceleration would I need for my space ship to reach Eris in 3 months

I have been working on a sci-fi story for a little while now, and have recently discovered that I made a very big error in assuming the position of Eris. The main issue is that I had forgotten to take ...
19
votes
2answers
2k views

Is it possible to place a permanent probe on Uranus?

Before anyone points the finger saying this is a tasteless joke, there are some actual good reasons to pick that specific planet for exploration among the giants in our solar system: Smallest mass ...
5
votes
5answers
422 views

Artificial gravity as an engine

I have seen some people talk about the idea of ships using their magical anti-gravity systems in a story in order to not only give ships a standard floor layout and inertial dampener systems, but to ...
9
votes
7answers
2k views

Ways to detect lasers from afar

In my sci-fi universe, spaceship shields are generated by capturing plasma between two electromagnetic fields. Projectiles are evaporated by the heat of the plasma, and charged particles are deflected ...
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
102 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 ...
77
votes
7answers
11k views

Spiders In Space: How to design a space suit for an arachnid?

In my stellar empire, the sapient life of the home world are arachnids. Due to an oxygen-heavy world with certain evolutionary characteristics, spider-like beings developed intelligence and formed ...
1
vote
4answers
138 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
484 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
943 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
247 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
212 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 ...
5
votes
3answers
162 views

How to broadcast Earth's position to someone in the future?

Using current technology, what could I do to optimize the odds of being located by time-traveling humans a thousand years from now? The accuracy must be such that they could "transport" me out of a ...
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
175 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
202 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
234 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
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 ...