57

The actual explosion of a supernova isn't really all that much "entertainment." It's an extremely bright flash. The formation of the nebula might be interesting. But that is a much longer process, starting at months and upwards to 100s of years. And, if you are far enough away as not to be fried by the initial flash, you will need very good ...


19

Yes, it makes sense for several reasons: trade Even if each settlement and ship are fully self-sufficient trade between them will eventually be established. The only exception is when distances are so huge that trade is absolutely impossible. Please note, trade does not have to involve material goods. It is much easier to develop and protect trade when ...


12

Safe distance estimates vary 50-100 LY 100 LY 25 LY Now, if you add a glassy shield, it would depend upon how effective this shield is. Blocking 75% of radiation means only 1 part in 4 harmful radiation gets past your shield - this would allow you to be twice as close since the radiation falls off proportional to distance squared. If you had a 100% effective ...


12

It Will ... Eventually Space as of now, 2021, is pretty much a lawless place. We might think of it as the period before the "Wild West" era of American history. Think of the Moon landings as Leif Eriksson landing in Canada. Think of the various probes from Voyager right on up to the most recent Chinese rover on Mars as De Soto and Lewis & ...


11

My question is, how would these cultures be motivated to explore space in depth, such as with rovers or astronauts, instead of just sticking to existing magical ways of reaching other planets. Magical travel between worlds doesn't preclude space exploration and science... on the contrary, it makes them hugely easier. People are curious, and are interested ...


9

There is no point in venturing into the empty of space for reaching a planet where you can conveniently "jump". There is still a point in going into space for investigating thing which you can't physically access, like any star, gas giants and other bodies which would end your life pretty quickly. In our solar system, that would mean pretty much ...


6

a space chase never ends That's not entirely correct, a ship presumably goes from somewhere to somewhere else. If it doesn't, then it truly doesn't matter what they do, they're effectively their own sovereign nation outside of anybody's effective control. It's when a ship shows up to a spaceport with a dead body, a cargohold full of drugs, or outstanding ...


6

We have an analogous situation with the internet. Which is to say, it is possible to anonymize and encrypt your traffic with several hops through VPNs to make you unreachable physically by people you are communicating with, creating pockets of ungovernable space. We see ransomware attacks on the news with official government responses along the lines of &...


6

Mothership (full of fuel and supplies close to the transport’s destination) to space vehicle EU W2775LV be like "pay taxes!" Space vehicle EU W2775LV (near its destination, needing to slow down (not speed up) to enter orbit, almost out of fuel for maneuvers, and running low on other resources) : yes, please There’s a narrow range of velocities to ...


5

The main problem will not be what happens to the air. Yes, it will move towards the rear, with a downward pressure gradient towards the front. Unless the cylinder is really long, the air at the front will still be of breathable pressure. On the Earth, air pressure halves for every 5 km altitude, and we would expect the same gradient even if the 'gravity' is ...


4

Government makes sense only to the extent that control can be maintained. If your propulsion is such that only single-body colonies can be controlled that will be the extent of your government. If instead somehow your propulsion is extended such that entire solar systems can be reached in reasonable times then government will extend to fill that niche. And ...


4

For a government to exist, it needs to have power over people, or to provide them with useful services (or both). If the people on the spaceship can't be caught, they might still want to make use of government services, for the education of their children, or healthcare, or providing a safe place to trade / take holidays / hire crew. In order to enjoy these ...


4

For the same reasons they would take international sea voyages Differences in technology: This implies some sort of comparative advantage that groups have for converting raw materials and labor into finished products. If one or both groups have an advantage like this, then the potential financial reward could be worth the risks (which you haven't really ...


3

Logic Fun fact: Venus is actually the better choice! Venus has earthlike gravity, a working magnetic field, a thick, protective atmosphere to go with it, a lot more available solar energy - what with being closer to the sun - and more frequent launch windows coupled with closer closest approaches. Okay, yeah, actually making landfall is a terrible idea, but ...


3

Additional spatial dimensions. As a mental aid, here is a sketch of myself. I wish to travel to point X. But as things stand I must walk across the intervening distance and the only exercise I get is in the gym. If my 2 dimensional plane exists in a 3dimensional space such that in the 3d dimension I am very close to my destination, I can cut through the ...


3

Sure a space government can make sense IF they control the means of production for creating critical systems and materials. Sure space vehicle EU W2775LV can take off and avoid taxation, until it needs fuel that is. It was carefully built to be dependent on outside manufacturing for that, so was the mothership for that matter. They also don't have the gear, ...


3

Leave the emergency ship in orbit. Bugs won't get in it. Heavy rains won't wash it away. Protesters won't push it over and pose on top of it. It has no crew. It just goes around and around. There are many of the emergency ships. There are only so many useful orbits and each has some emergency ships. If a distress call goes out, the robot in the ...


2

I skim read and thought you were talking about something attached to a ship or station and answered as follows: If you have a rotating module for spin gravity the easiest answer is to attach your lifeboat onto the outer rim with explosive bolts and let the spin throw it clear when you blow it loose no fuel is required at all that way. If you don't have that ...


2

Time travel. The existence of faster than light travel implies the possibility of time travel. As such, have them simply time travel a million years into the past and then fly at near light speed in real space to their target. Droids and stasis pods can keep them alive. You can say temporal paradoxes and the force prevent this from being a useful method with ...


2

Triangular Trade The length of time between ports is not really what is important. What matters the most is that violent gangs (monarchs) will dominate the entry points, and demand tributes/passage fees so high that only the most valuable goods are profitable to ship. Merchants from all over the world can bid to go through, and only so many will fit at a ...


2

Sure (eventually) Mars runs itself and Venus runs itself, but what happens when Mars wants to trade with Venus? Sure ships can start moving goods between the planets but someone will come along complaining that those Venusian's are under cutting the local Mars built products. Thus people will demand that something should be done about it. The usual way then ...


2

Consequently, each State handles its issues with the laws that pertain to its jurisdiction, except monetary issues, such as the printing of money. Other examples of decentralized governments include the governments of Australia, Canada, Germany, and India. As no one recalled about decentralized government examples, seems it needs a reminder. In some sense ...


2

If the (rather implausible) atmosphere were pure oxygen and the explorer was a Sherpa or Quechua, acclimated for high elevation by being born around 5 km high, you'd still have to have a minimum of about 16 kPa (~150+ mBar) to have a breathable oxygen level. For the much more plausible mix of oxygen and nitrogen, and reasonably fire-safe level of less than ...


2

There wouldn't be any reason to actual travel through space, though exploration for the sake of curiosity / science would happen. I've actually developed a roleplaying game which is SciFi but also has technology to go straight from planet to planet (think "Stargate"). When you think it through, there's no reason to ever travel through the vast, ...


1

To me this appears to be more of a magic design problem, not a problem of the physics and engineering involved in space exploration. If this magic system is advanced to the point that I can go through this warp in a sufficiently advanced spacesuit, or send any amount of cargo I want, then space exploration via traditional methods is rather a waste. Perhaps ...


1

Magic does not provide a map. You can find some places by magic because magic can feel them. But it does not give an idea of the precise location and it does not show a lot of places. Physical travel is the only way to get an overall view with a precise mapping and a complete knowledge.


1

And unlike cars, spaceships can produce their own energy, without ever needing to stop and refill Energy doesn't come from nowhere. Nuclear fuel decays and produces less energy over time. A fusion reactor requires stuff to fuse. Solar panels degrade over time, and produce less power the further you get away from the Sun (or whatever star you're orbiting)....


1

Something similar already happened in the 16th to 18th centuries. At the time the reach of the authorities was limited by the technologies, but ships often travelled to the other side of the world. With no other authority around the captain of the ship had absolute power and with the wrong captain conditions for the crew could be harsh. That is why mutinies ...


1

With certain technologies, Venus can be quite an attractive place, because of 3 or 4 factors. it probably(/may) does not fit what you envision or some of your requirements, those are just a few, I would call legit reasons/factors, if not then handwavium is always available. Atmosphere Atmosphere of Venus is 96.5% Carbon dioxide and a mass of 4.8 × 10^20 kg,...


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