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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.

1
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0answers
95 views

How would a highly mutagenic (or shape-shifting) species have to adapt physiologically to achieve space travel? [closed]

An idea I like to write about a lot is aliens that are dependant on their own biological evolution over technology. I was wondering what kind of adaptations a species that could rewrite their own ...
0
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1answer
180 views

Would a magnetic monopole rocket engine produce more energy than an ion engine?

Would a starship that was propelled by magnetic monopoles fly faster and longer than ion engines (assuming magnetic monopoles exist) of course.
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2answers
107 views

How much energy is needed to get water from the moon into low earth orbit?

I was reading the Q/A on water as radiation shielding. The prime answer went in to detail on the cost to lift water from Earth which is cost prohibitive, but how feasible is it to get the water from ...
9
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6answers
845 views

What near-future propulsion system(s) could be employed by my spaceships?

In a near future setting I am working on, humans have built space-habitats and have established colonies on celestial objects such as Luna. Their spaceships cannot go faster-than-light and have their ...
3
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3answers
185 views

Considerations for venturing near a neutron star

I'm curious what might need to be considered if a group were exploring the vicinity if a neutron star. Gravitational waves and radiation could be dangers, but what else? Is it possible that ...
4
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5answers
695 views

How to travel through space without modern technology [closed]

So. A looong time ago, I asked how to remove most technology in a hundred years. However, I just realized that for my plot to work, I still need my characters to move from one planet to another. I ...
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2answers
103 views

Assuming a network of natural wormholes allowed FTL jumps, what could I do with a comprehensive map? [closed]

So I'm in a universe in which there are naturally occurring wormholes, which humanity has used to spread among the stars. Discovering new wormholes is tedious, and scouting new systems is hard work, ...
0
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4answers
322 views

Can a spinning spaceship/station impose the physiological effects of gravity on humans? [closed]

Why doesn't the ISS (International Space Station) spin to imitate Earth gravity? I remember reading somewhere that centrifugal force isn't enough to help people avoid things like osteoporosis, etc., ...
-1
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4answers
112 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 ...
26
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12answers
5k views

Spaceflight without transistors and nuclear power - how to bend the history of physics?

As stated in the topic: I would like to have Project Olympus-style space stations served by Apollo-like spacecraft in a world where neither nuclear power (and weapons) nor transistors were developed ...
59
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37answers
16k views

Why would technology dictate graphical interfaces to be rare on spaceships?

This question differs from that question in that the other question is asking about a change in history while this question is looking for a change in the future. In a near future setting I am ...
7
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3answers
1k views

Are there more tidally locked planets in the galaxy than non-tidally locked ones? [closed]

We left Earth about a decade ago, and I'm starting to regret bringing TWO physicists along. They've recently gotten into a disagreement about the kinds of planets we should expect to survey when we ...
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3answers
107 views

Severe injury of a space station astronaut [closed]

Let's suppose that an astronaut on a space station is severely injured while doing plumbing work outside: a malfunction of the MMU (like in the movie "Geostorm") causes him to tumble uncontrollably, ...
2
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1answer
268 views

Could a civilization go from the end of the stone age to the space age within a couple thousand years?

I was wondering if it is plausible for a civilization to go from the end of the stone age to the space age from 6,000 years to 10,000 years. I was thinking this planet's star was starting to die, and ...
1
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3answers
172 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 ...
22
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8answers
3k views

Can I overcome the bandwidth limitation on my photonic railways?

The Humern Empire is a vast, well established empire that spans the galaxy. Despite having no FTL travel they have kept their empire together with a series of subluminal transport methods. Heavy ...
4
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9answers
397 views

How to check for atmosphere behind a door on a damaged spacecraft

First, yes I was inspired by this question: "How do you check if a room behind a door aboard a spaceship has an atmosphere/pressure?" I wanted to take the scenario further, instead of asking how the ...
11
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6answers
442 views

How to 'store' a spacecraft for a long-term expedition?

My first time here, hope this is a useful question. Mostly about orbital mechanics and vacuum. So the crew of a general-purpose interstellar spacecraft have stumbled across a paradise planet. After ...
1
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2answers
101 views

How possible is it that a moon in another star system could be habitable? [closed]

Realistically, is it possible for a moon, say one orbiting around a gas giant in a stars habitable zone, to be habitable fit to colonize? As in habitable to the point it is like or a close twin of ...
17
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6answers
2k views

Could a large radio telescope survive interstellar spaceflight?

I recently came across Could pulsars really act as "lighthouses" to help in interstellar travel?, asked a week ago. The author was trying to figure out if pulsars could be useful for ...
2
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2answers
47 views

Equatorial tether electrical issues [closed]

The idea of a line at the equator to geosychronous station in space is not new, but what about lightning and the electrical issues from what is in the atmosphere? Would it be essential for such a ...
0
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2answers
74 views

Comfort or Value of protection? [closed]

I have always been interested in why do spaceships in most sci-fi films have windows and are very badly protected, especially the hull of the spaceship. Why aren't there extra systems if something ...
0
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4answers
180 views

Ways to cushion an un-augmented human against high, prolonged g-forces?

Soft sci-fi uses inertial dampeners. Harder sci-fi uses stuff like advanced crash couches, robotic exoskeletons, or (my personal favorite) drug cocktails filled with stimulants and other medication ...
5
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8answers
394 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 ...
5
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8answers
592 views

What could happen if astronauts in a space ship discovered a stowaway after takeoff? [closed]

Let's say it's NASA. What could happen if after takeoff, when there's no turn around, the astronauts found a human stowaway? Some things to look at; It takes millions of dollars to carry out a space ...
5
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1answer
256 views

Could pulsars really act as “lighthouses” to help in interstellar travel?

I was reading an article that said pulsars could be used in the far future, by travelers, by acting as "lighthouses" in space and aiding in interstellar travel. In a galaxy wide civilization, would ...
8
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3answers
330 views

Which factors determine how far a government can expand without losing control?

Throughout history we've seen that governments which expanded far and wide all ended up today controlling just one area on the map. I was playing Civ 6 and realized it can be tough even in a ...
5
votes
6answers
488 views

Signal language, how long can we stay in touch?

I'm working on a universe where FTL exists but arrival times can be unpredictable to say the least. On average FTL trips are conducted at 4C but ships can take much longer to arrive than that speed ...
9
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13answers
1k views

How can a highly advanced sub-luminal galactic empire minimise the effects of speciation?

The Humern Empire (no relation) spans the galaxy, using a variety of methods to move from place to place and planet to planet. One thing all of their modes of transport share is that they are not ...
1
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4answers
396 views

How fast can a generation ship be? [closed]

If you realize that you can't do FTL and you still want to explore the stars a generation ship is your only option. Sure it won't do you much good, but a descendant may get to see something. How ...
0
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3answers
270 views

How would eco-friendly Space Travel Work? [closed]

I'm not that good in Physics, but I try my best to learn. So my question is. I know that planes "damage" nature pretty hard. And they use kerosene as fuel I think. But rockets need way more power. ...
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5answers
158 views

If radio communication somehow requires atmosphere to work, how would space exploration be different? [closed]

The first thing that I can think of is that space exploration becomes incredibly slow, because sending everything up there that is not pre-programmed needs a human pilot, and there would be no way of ...
1
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2answers
106 views

Real-world technologies to provide better safety to spaceship passengers

Is there any real technology, experimental or conceptual, that can prolong a person's survivability in outer space in case of sudden life support failure? Something that is also easy to wear or ...
23
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18answers
4k views

What circumstances would cause a 10 year cycle of shipments from Earth to another planet

Looking into fleshing out my world story. One of the things I had in mind was an infrequent but consistent shipment of supplies to a planet from Earth. For simplicities sake, we'll use ...
1
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1answer
309 views

Interstellar Player - How to defend you realm under given circumstances? [closed]

Prefix interstellar travel In "my universe" the FTL technology of choice is the classic jump drive. A ftl capable craft moves from one jump point in one system to another jump point in another ...
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2answers
229 views

How can I observe the end of the universe in a human lifetime?

I'm from an impatient, short lived, and cheap species known as human and while I've developed the means to travel the galaxy, I'm pissed at it. It knows what it did. So I've had enough. I'm looking ...
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7answers
209 views

Reasons that make a spaceship forced to land at the nearest planet?

I'm looking for some reasons that could force a spaceship to land at the nearest planet and cut all connections with the homeland planet, so all the crew will be force to settle at the planet for a ...
1
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2answers
122 views

Quantum Entanglement or other means of FTL Travel

I am writing a Sci-fi/detective story and I'm wondering if Quantum Entanglement is a feasible means of FTL travel. (I know very little on the subject so if no is the answer please suggest a possible ...
1
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6answers
254 views

Going slower in worlds where fuel is free or insignificantly cheap

Established rules for the universe: FTL travel exists with special drives, special artificial generated wormhole like tunnels where space ships can break the laws of physics. Engines runs hot, ...
3
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3answers
141 views

Protecting humans in prolonged high-G maneuvers

In a world where torch ships sometimes will accelerate over 10Gs for hours, maybe sometimes days on end. Is there any way to keep the crew alive and preferably fully functional in during such harsh ...
5
votes
2answers
200 views

Viability of ballistically propelled “traveling salesman” space stations

I'm interested in the viability of the following scheme for (relatively) fast space commerce within the Solar System: have a fleet of space stations essentially built around a long linear accelerator....
4
votes
5answers
320 views

What drives would make Casual Interplanetary Travel possible?

I am currently trying to make a world that has casual interplanetary commutes with near future technology (within one century); so, to find a reasonable top speed for crafts in my interplanetary world,...
5
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11answers
6k views

How to survive the G-force of Space Travel

In my world ... Actually, in every hard sci-fi world with casual interplanetary travel, the G-force involved in acceleration would becomes so high that no unmodified human being could realistically ...
12
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9answers
620 views

Stellar Navigation for Dummies - Finding your way home

Average Joe was an amateur astronomer. While he was out in the wilds one day with his telescope he was kidnapped by aliens, carried off and kept as a slave on a world somewhere in the Milky Way. ...
1
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3answers
279 views

Is it worth having artificial gravity by propulsion, in orbit or in “free space”?

Consider: A spacecraft is travelling between planets. It accelerates at a constant rate for the first half of the trip, and then decelerates on the other half. Throughout the journey, aside from the ...
2
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5answers
223 views

Is my celestial coordinate system efficient?

I want to know whether or not my starship's cordinate system is efficient or not. Soon after my race flew into the stars, we realised we needed to be able to tell where we were. We need coordinate ...
19
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8answers
4k views

How does a solar sail return to its world?

While trying to figure out a way that individuals could own spacecraft in my sci-fi setting without having access to things that could double as weapons of mass destruction, I settled on the ...
9
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7answers
1k views

Cryostasis alternatives.

What other ways are there to save a human for a very long time. I know only about cryostasis. Let's say we have a spaceship traveling several hundred light years to a distant galaxy.