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Q&A

Posts tagged travel

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Q&A Base on the Moon for interplanetary travel

In my book which is set in the near future (some hundreds years from today) the mankind has mastered interplanetary travel. Although the travel to let's say Pluto is possible, it still takes severa...

2 answers  ·  posted 4y ago by Maxim Zabolotskikh‭  ·  last activity 4y ago by Maxim Zabolotskikh‭

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Q&A Is it necessary for spaceships to include reverse thrusters for deceleration in space?

Set in the not so distant future, space travel becomes commonplace but is limited within the heliosphere. I'm thinking since it is fuel efficient and more economical to use gravity assist to slow d...

6 answers  ·  posted 4y ago by user6760‭  ·  last activity 4y ago by user6760‭

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Q&A Will we need to replace conventional rockets to send manned missions further into space?

Currently, chemical rockets have taken men to Earth orbit and the moon by combusting rocket fuel to generate thrust. Even if we develop more efficient rocket fuels and can create significantly la...

4 answers  ·  posted 7y ago by Antonio Marmo‭  ·  last activity 4y ago by Antonio Marmo‭

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Q&A Extracting all water from Ganymede?

Is it theoretically possible to extract all ice and water from moons with subsurface oceans like Ganymede or Enceladus? What would the consequences of isostatic rebounding be if this was done on ...

1 answer  ·  posted 4y ago by carsonogen089‭  ·  last activity 4y ago by carsonogen089‭

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Q&A How would a fantasy airship operate?

I want to incorporate hot air balloons as a means of common travel in my fantasy world, but I recognize that hot air balloons aren't really "propel-able". My question is, how would someone hypothet...

8 answers  ·  posted 7y ago by Roguette‭  ·  last activity 4y ago by Roguette‭

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Q&A Would Stirling engines be good in space?

My knowledge of Stirling engines is that they work via a heat difference and are extremely heavy when used on a larger scale. This makes the use of them on vehicles a strange choice when there are ...

8 answers  ·  posted 7y ago by Mendeleev‭  ·  last activity 4y ago by Mendeleev‭

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Q&A What is a good reason not to mine a planetary ring?

Most planetary rings are rich in water in the form of ice, especially now we are running low on freshwater reserves on Earth. Imagine someone discovered a huge chunk of meteorite consisting of a wh...

6 answers  ·  posted 4y ago by user6760‭  ·  last activity 4y ago by user6760‭

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Q&A Formula for send and response times of messages at fraction of light speed?

I have a ship that begins the equation traveling at 50 percent the speed of light, but decelerating constantly to finally land on a certain planet (towards which it is moving the entire time). It b...

2 answers  ·  posted 4y ago by Jesse Tate‭  ·  last activity 4y ago by Jesse Tate‭

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Q&A How fast would a civilization with FTL spread out?

Let's say that a civilization has access to FTL. Let's say it is instantaneous so travel time between solar systems isn't a factor. How long would it take for them to spread out from their home sol...

10 answers  ·  posted 4y ago by Jonas‭  ·  last activity 4y ago by Jonas‭

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Q&A How could a skyhook stay in orbit with no human involvement for thousands of years

In the story I'm writing, three humans with stone-age technology and no knowledge of space accidentally awaken thousands of cryogenically preserved humans. These humans immediately get to work on...

4 answers  ·  posted 4y ago by John Lewis‭  ·  last activity 4y ago by John Lewis‭

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Q&A "Where are you going dragon, don't you dare leave your rider behind!" How can a rider keep up with their dragon?

So, let's suppose I finally made it. A creature that's very agile, able to resist most small-arms fire and has a whale-oil breath weapon. Flight is solved with bones, as strong as carbon fiber, (la...

1 answer  ·  posted 4y ago by Mephistopheles‭  ·  last activity 4y ago by Mephistopheles‭

Question travel dragons
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Q&A Why is dwarfism considered an advantage for jobs in space?

First, a clarification: Dwarfism is the umbrella term for 200+ medical conditions that result in short stature. Since this is Worldbuilding, my question refers to human beings with genetic dwarfis...

6 answers  ·  posted 4y ago by wetcircuit‭  ·  last activity 4y ago by wetcircuit‭

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Q&A How fast do we spin this for 'One g'

Following on from this question. Question Context : Mars second moon Deimos has been converted into a generation ship. A considerable portion of its mass has been shaved off during the process &...

1 answer  ·  posted 4y ago by Pelinore‭  ·  last activity 4y ago by Pelinore‭

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Q&A How many people can a sealed 3x1x1 km biome support?

Question Context : Mars second moon Deimos has been converted into a generation ship. A considerable portion of its mass has been shaved off during the process & ejected backwards along its p...

1 answer  ·  posted 4y ago by Pelinore‭  ·  last activity 4y ago by Pelinore‭

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Q&A How to avoid objects when traveling at greater than .75 light speed. or How Not to Go SPLAT?

After asking my question about seeing black holes in your path between the stars, I also wondered abut other more mundane objects. Black holes affect large areas of space so even if you didn't get...

13 answers  ·  posted 9y ago by bowlturner‭  ·  last activity 4y ago by bowlturner‭

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Q&A Pre industrial form of rapid mass transit over land

I have a world that isn't an exact analogue to medieval technology, closer to the late 1700s in terms of culture and agriculture/metallurgy, only without gunpowder. I have them ahead of real histor...

8 answers  ·  posted 4y ago by Rick D‭  ·  last activity 4y ago by Rick D‭

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Q&A Properties of a new engine

In my story, I need a spaceplane, that is, a shuttle which can fly in an atmosphere as well as in space. It needs to be able to land from space, and then take off and go to space without refuelling...

4 answers  ·  posted 4y ago by Alex‭  ·  last activity 4y ago by Alex‭

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Q&A Can tiny astronauts reach space?

Imagine a species one foot tall that has a relatively large brain for its size. The species has human like intelligence and in principle the ability to build anything that we could. It lives on a w...

2 answers  ·  posted 4y ago by Slarty‭  ·  last activity 4y ago by Slarty‭

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Q&A A feasible and efficient method of fast global travel?

What would be an efficient method of global travel that can take you from, let's say, London to Hong Kong in about an hour? It would preferably be made quickly, but money is no object. I don't want...

10 answers  ·  posted 4y ago by Greenie E. - Reinstate Monica‭  ·  last activity 4y ago by Greenie E. - Reinstate Monica‭

Question travel physics
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Q&A Feasibility of coilgun system for sub-luminar interplanetary transport

My story is set within one solar system, which can be assumed to have a similar composition to that of our own: one Class G star, a handful of rocky inner planets and a handful of gas giants on the...

11 answers  ·  posted 6y ago by enpaul‭  ·  last activity 4y ago by enpaul‭

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Q&A Space travel without knowledge of relativity

A civilization has begun its space program without any knowledge of general or special relativity. How would this affect the program? Would this establish any limits on where/how they could travel?...

2 answers  ·  posted 4y ago by RowanBot3000‭  ·  last activity 4y ago by RowanBot3000‭

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Q&A Using spin gravity only for stationary activities?

For a spacecraft cruising without thrust it is my understanding that the sort of spin gravity utilized in the film 2001, for instance, would actually be debilitating to the crew due to the coriolis...

2 answers  ·  posted 4y ago by Duke Leto‭  ·  last activity 4y ago by Duke Leto‭

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Q&A Perils of having a moon consisting of valuable material

In the 1960s we were disappointed to find that the moon is a pile of dust and rubble with no easily accessible valuable materials. Well, we kind of knew it before that, but we weren't sure. Anyway,...

5 answers  ·  posted 4y ago by Solar Bear‭  ·  last activity 4y ago by Solar Bear‭

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Q&A Locating rogue planet in deep space based on astronomical observations from its surface?

Assume that you have a Rogue Planet hurtling through deep space. Somehow, an alien civilization from, say, 1,000 ly away acquires astronomical data from this planet. This data is in the form of h...

6 answers  ·  posted 4y ago by ak7‭  ·  last activity 4y ago by ak7‭

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Q&A Can a human crew handle cyclic extended high relativistic speed operations?

This question hopes to make a space tug crew's life tolerable. A supply pipeline links two civilizations. Due to the long travel time between the ends, cargo is "thrown" at the other side in unman...

2 answers  ·  posted 4y ago by Vogon Poet‭  ·  last activity 4y ago by Vogon Poet‭

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Q&A 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 t...

3 answers  ·  posted 6y ago by Yaeger‭  ·  last activity 4y ago by Yaeger‭

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Q&A Hurricane-force winds or gentle breezes in an O'Neill Cylinder?

Let's consider an O'Neill cylinder with a radius of 3.2km and length of 20km. In the classic O'Neill design, we have three large axis-aligned windows in the shell, alternating between purlins of ha...

3 answers  ·  posted 4y ago by David‭  ·  last activity 4y ago by David‭

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Q&A Do Alcubierre Drives Mandate Time Travel, or Just Allow it?

So, I've heard that while Alcubierre drives might present a semi-plausible way of getting around the light speed limit (if you can get ahold of negative energy), they do so at the expense of creati...

1 answer  ·  posted 4y ago by FlyingLemmingSoup‭  ·  last activity 4y ago by FlyingLemmingSoup‭

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Q&A 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 ...

12 answers  ·  posted 5y ago by Kabob Maraca‭  ·  last activity 4y ago by Kabob Maraca‭

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Q&A Spaceship fuel on Europa

What would make a good propulsion source for small engines and manouvering thrusters for spacecraft vehicles on Europa (moon of Jupiter), both for near-surface operations (vacuum) and in caves bene...

3 answers  ·  posted 5y ago by Innovine‭  ·  last activity 4y ago by Innovine‭

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Q&A Metallic hydrogen powered vehicles

Let's say metallic hydrogen becomes an economically viable resource that we are able to either make ourselves or mine from a gas giant, how would we use it as a power source for vehicles both plane...

1 answer  ·  posted 4y ago by Bradley Knauer‭  ·  last activity 4y ago by Bradley Knauer‭

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Q&A What could prevent players from leaving an island?

I am currently building a campaign for DnD. The main plot plays out on an island the heroes are stranded on after their ship goes off track and sinks. They discover that this island is ruled by m...

23 answers  ·  posted 4y ago by Nautha‭  ·  last activity 4y ago by Nautha‭

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Q&A How steep a road could a horse/horse-and-cart travel?

I'm in the early stages of designing a city, and would like some advice about to structure its roads realistically for transport. The city is circular, with large roads entering the city at north...

5 answers  ·  posted 6y ago by K. Price‭  ·  last activity 4y ago by K. Price‭

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Q&A 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 a propellant, assuming you have ...

3 answers  ·  posted 5y ago by Gryphon‭  ·  last activity 4y ago by Gryphon‭

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Q&A Are dead worlds a good galactic barrier?

In my fictional universe there are two galactic civilizations that have never interacted until recently and thus have developed different cultures, science, etc. From a technological standpoint, o...

19 answers  ·  posted 4y ago by Locksmith‭  ·  last activity 4y ago by Locksmith‭

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Q&A What could possibly power an Alcubierre drive?

I understand that in order to compress and expand spacetime, an Alcubierre drive would require some sort of "exotic matter" with a negative energy density. Is that sort of exotic matter purely hyp...

6 answers  ·  posted 4y ago by HolocronCollector‭  ·  last activity 4y ago by HolocronCollector‭

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Q&A movement of space animals

Animals on planets are so 20th century - let's herd us some space animals! In this story I have the need to move a herd of pesky space animals. They like Suns for their juicy solar energy and hydr...

4 answers  ·  posted 8y ago by Nahshon paz‭  ·  last activity 4y ago by Nahshon paz‭

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Q&A Would there be artificial gravity on a spaceship that undergoes constant acceleration?

One way of creating artificial gravity is acceleration- gravity by inertial mass. So in theory, if we would find a way to travel interstellar space by accelerating, reaching near light speed, woul...

2 answers  ·  posted 4y ago by Inb‭  ·  last activity 4y ago by Inb‭

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Q&A How fast could our modern-day world build a rocket to the moon if we threw our resources at it?

For some reason, all the nations in the world have banded together. Their goal? Go to the Moon. Their budget? As much as the planet and humans can throw at it. How fast could we build a reliable a...

3 answers  ·  posted 4y ago by virchau13‭  ·  last activity 4y ago by virchau13‭

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Q&A Explain the rotation and positioning of O'Neill cylinders to me

I have seen Isaac Arthurs video of O'Neill cylinders and read through many descriptions, but it still is not clear to me how exaclty the two counter-rotating cylinders are placed in regard to anoth...

2 answers  ·  posted 4y ago by Backup Plan‭  ·  last activity 4y ago by Backup Plan‭

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Q&A The new Space Race - Racing!

Pretty much every vehicle ever invented has been used for racing on at some point, so it seems likely that people would want to do the same in space. However in space it doesn't really work the sa...

8 answers  ·  posted 9y ago by Tim B‭  ·  last activity 4y ago by Tim B‭

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Q&A How to figure out that you traveled 570 million years into the future while in space on a small shuttle craft?

I want a character to get sucked into what she thinks is an FTL-wormhole-gate. While it turns out that the gate is indeed a traversable wormhole, it does not allow for FTL travel. The gate transpor...

6 answers  ·  posted 4y ago by TheDyingOfLight‭  ·  last activity 4y ago by TheDyingOfLight‭

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Q&A How large would a space station have to be to hold one million people indefinitely?

A moon-sized asteroid approaches Earth in the near future, where space tourism has become normal. The Earth has a few satellite structures above Mars conducting research, as well as successful terr...

2 answers  ·  posted 4y ago by Alex‭  ·  last activity 4y ago by Alex‭

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Q&A How would time dilation affect a fleet moving through a black hole's event horizon?

In a game scenario I am developing, one option for a fleet to infiltrate an enemy is to use ftl to "hard burn" through a black hole's event horizon. Their ftl drives use a "warp bubble" principle t...

2 answers  ·  posted 4y ago by HA Harvey‭  ·  last activity 4y ago by HA Harvey‭

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Q&A What is the fastest an earth-like planet can spin and still support life, and would it be possible to launch space-craft from it?

I was wondering, if a planet in similar size and mass to earth would have, from its creation, been spinning at this hypothetical planet speed limit (with it somehow staying in once piece) could lif...

1 answer  ·  posted 4y ago by The Silhouette‭  ·  last activity 4y ago by The Silhouette‭

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Q&A How could a self contained organic body propel itself in space

How could an organic, plant-like, intelligent organism move around space? Assuming that the body is inside a small meteoroid and that outside of the meteoroid is covered in tessellating leaves to...

13 answers  ·  posted 4y ago by meaninglessname‭  ·  last activity 4y ago by meaninglessname‭

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Q&A If we brought ancient germs to the present

If germs from the past was brought to the present/future on a person (or by some other means of transportation) and we have immunity to its descendants, like the modern germs for example, would we ...

3 answers  ·  posted 4y ago by yo76yo‭  ·  last activity 4y ago by yo76yo‭

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Q&A Would you carry the exact same DNA if you were concieved at a different time?

In this world, time travel is possible, but the only thing that can be sent back in time are thoughts. From the perspective of your past self, you suddenly one moment realize that you have "memorie...

3 answers  ·  posted 4y ago by Lazar Ljubenović‭  ·  last activity 4y ago by Lazar Ljubenović‭

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Q&A If an Alcubierre Drive is possible, can you communicate FTL without a vessel?

Assume that an Alcubierre drive is feasible. In fact, assume that one has been built. A superluminal starship can propel itself through space by distorting space in front of it and behind it. Howev...

3 answers  ·  posted 4y ago by kingledion‭  ·  last activity 4y ago by kingledion‭

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Q&A Dyson-Harrop to power an ion engine?

With all the interest in VASIMR and the idea of getting to Mars in 39 days, the biggest challenge I can see is having a power source that is strong and light enough to make that possible. So I was ...

3 answers  ·  posted 7y ago by rclev‭  ·  last activity 4y ago by rclev‭