# Questions tagged [distance]

For questions about the direct measurement of space, the spacing of elements within a fictional world, or the operation of physics such as optics between two objects at a distance. The objects in question should also be given separate tags.

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### From how far away can you see a space elevator from the ground [duplicate]

In my story, the character will walk to a space elevator he can see far away, but the question is "from how far away can he see his destination"? The action is happening is inside a gigantic ...
• 1,067
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### How far apart ought my type-S binary stars be if each is to host a stable planetary system?

Consider a G-class star (0.9457 Msol) as the primary and a M-class dwarf star (0.4335 Msol) as the secondary. If I want a stable planetary system around each (particularly the G-class), then how many ...
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### Solar Flare/CME Range Limits

The Setting: A binary solar system comprised of a KV-class Orange Dwarf, and an M-Class Red Dwarf which orbits roughly 600AU away. The Orange Dwarf has 4 planets orbiting around it, including one ...
1k views

### How to measure land area for a map?

Is there a site, app, or technique that you can use to measure the area of your world’s continents. It is rather easy to find the surface area of your world if the map is equirectangular or just a ...
• 976
386 views

### How close can two planets be within the habitable zone?

I am aware that similar questions have been asked but these variables are different. I have tried to calculate it myself or at least find an equation that could help find the forbidden zones for these ...
• 976
1 vote
3k views

### How Long Would It Take a Party of 3 to Get 1000 Miles With a Wagon and a Horse [duplicate]

So I need to know how long it would take a party of three or four to get 1,000 miles with a fairly heavy wagon and one or two horses. Without stops I know walking will take around 14 days. There are ...
322 views

### How far apart would "rooms" need to be in a 3-D maze and still be hard to navigate

I'm creating a world that takes place in an infinitly big 3-D maze. This means there can be branches in any direction (not that there's one main place, just from each "room"), even directly ...
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### How close the the star should i place my lava planet?

I am building a solar system with a k5v star at its center. Here are the some important stats for my star: Mass: 0.70 M Radius: 0.67 R Luminosity: 0.15 L Surface gravity (log g): 4.40cgs Temperature: ...
• 1,801
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### What is a safe distance from a stellar nursery and what will it look like from that distance?

I was designing an arrangement of megastructures which would be hidden within a nebula but for those in the know it would be big location pointer and I have gone for a molecular cloud based on the ...
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### In regards to mass and luminosity, what are those mystery stars?

Long ago (4.6 billion years, to be exact), a hyper-advanced alien civilization had created a solar system from scratch. Somehow, they had artificially prolonged the center of the solar system--a ...
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### How big would my habitable moon's primary planet appear in the nightsky in these two situations?

How much bigger than earth's moon would my habitable moon's primary appear in the nightsky? And is there a way to calculate how bright it would be in lux when it is illuminated in full? Here is the ...
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### Does anyone know of certain galaxies that are at certain distances from Earth?

Okay, I have this quadrumvirate of godlike aliens, each born far from Earth. I would like to make a map of the universe for their fictional homeworlds that use existing galaxies. I’ll refer to the ...
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### Horseback Travel in an Unpopulated Pacific Northwest

I'm writing a novel that takes place in a very sparsely settled coastal PNW, and the MCs have two horses that they use for transportation and as their carrier animals (Bedrolls, tent, some rations). ...
303 views

### How Big Can the Habitable Zone Be in a G-Type Binary System?

Here's the basic setup: There is a binary solar system somewhere in an elliptical galaxy (said to be more suitable for habitability than spiral galaxies like our Milky Way.) The first star is a G-...
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### Exactly how far apart are nearby stars from one another? [duplicate]

I am working on a hard(ish) science fiction space opera story, and I would like to get a good handle on distances between stars so that I can calculate appropriate travel times. There are a lot of ...
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### Natural Metre Bar

Consistent units are one of the most important inventions to the modern age. Before standardization, one used natural units such as 'feet', but these all varied from person to person. My world ...
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### The Great Carina Nebula in viewing range of a planet

How close should a planet be to the Great Carina Nebula for it's inhabitants to look up and see this in the night sky? I'm aware much of the sharpness of the view would be lost due to the atmosphere, ...
• 387
1 vote
196 views

### What is the distance between binary planets? [closed]

What should be the distance between two Earth-like binary planets, each having its own moon? Each planet is rotating about a barycenter in a plane of their solar system and the moons are rotating ...