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Posts by Jim2B‭

18 posts
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Q&A How will uploaded personalities be represented in a government?

I'm going to use the US model for the simple reason that I'm most familiar with it. Constraints and assumptions In the US, legislative representation is by region (state) and population levels. ...

5 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Rigorous Science Does an arbitrary constant burn path between two orbiting bodies exist?

Yes but you have to violate one of your conditions. Acceleration To launch from Earth, your acceleration must exceed Earth's gravitational acceleration. So assume an acceleration of 1.1 g (with...

posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Rigorous Science Apparent magnitude of my moon as seen from the planet's surface

There's a relatively easy way to calculate this number. Compare your moon's parameters to ours and multiple those differences Size Start with out Moon (diameter 2,156 km) and compare to your moon...

posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A In space, do "shipping lanes" make sense?

Under the right set of circumstances, shipping "lanes" in interplanetary space might develop. Other than those specific circumstances, each trajectory will be fairly unique and stuff won't ever sh...

posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A How practical is it to capture an asteroid?

Let me address a couple of matters of terminology first. (Unless you need a manned mission or have other factors which impose timing constraints) distance doesn't matter. It is $\Delta V$ (change...

posted 9y ago by Jim2B‭

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Q&A Why build space habitats on/within moons?

Consider yourself a decision maker for a fledgling space infrastructure project. You've been tasked with establishing the first few extraterrestrial colonies for your species. What aspects of the...

5 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 6y ago by Jim2B‭

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Q&A What is the minimum level of technology to enable interlunar civilization?

Definition: Interlunar adjective Of or traveling between moons. I'm (as far as I can tell) inventing the term interlunar to describe travel between moons in a single planetary system. Travel b...

2 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A Architecture of richest person's house on the moon

Background Several hundred years from now, humans have successfully terraformed the Moon. It has become a fad for the rich and powerful to have exotic residences built in exotic locations. The ri...

2 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A The economics of uploaded personalities

Setting Humans have spent centuries investigating human consciousness, brain physiology, AI, and other technologies. We've finally figured out how to "upload" a "consciousness" (these are quoted b...

5 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A What is the minimum planetary mass to hold an atmosphere over geologic time scales?

I realize that many factors affect this answer so assume the following: Star type: G2 star (like our Sun) Composition: O2, N2, CO2, H2O atmosphere Magnetic field: Two different magnetic field str...

3 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 6y ago by Jim2B‭

Question atmosphere planets
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Q&A What society might survive the 3 generation rule

A not widely accepted psycho-social phenomenon but one our descendents might sometime face, the Three Generation Rule states: that the degree of social discipline needed for a space habitat to ...

17 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 8y ago by Jim2B‭

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Q&A Would generation ships encourage a caste system?

The Setting Imagine a generation ship of 10-20 generations (200-400 year trip). The generation ship is divided into living crew and frozen eggs. Upon reaching the destination & for genetic d...

5 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A How might a colony treat the arrival of a new generation ship?

Assumptions Space travel is hard. Interstellar travel takes a long time. Chances for a successful trip and colony becoming self-sustaining are not considered super high. Therefore, each colony ...

5 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A How do nanites get the resources that they need?

I've been mulling over the idea of nanites (microscopic machines that perform work - usually to transform one material into another). I've come to the conclusion that at a macroscopic level, nanit...

4 answers  ·  posted 8y ago by Jim2B‭  ·  last activity 8y ago by Jim2B‭

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Q&A How could living cells harness nuclear radiation for energy?

Question: many SF stories (e.g. The Expanse) put living organisms in highly radioactive environments and show them consuming that energy in some way. How might organisms put into these environments...

1 answer  ·  posted 6y ago by Jim2B‭  ·  last activity 6y ago by Jim2B‭

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Q&A What are the minimum set of physical characteristics to define an Earth like planet?

Introduction I have a vague notion of building some sort of strategic space game. Similar to other strategic games, locations are assigned value based upon some abstract evaluation. Following in...

6 answers  ·  posted 9y ago by Jim2B‭  ·  last activity 8y ago by Jim2B‭

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Q&A What are mapping or diagramming techniques that would be valuable to someone mapping a planetary system?

Basically, it's a question about creating maps or diagrams. In particular, we on Earth are used to maps showing variation over distance & location. The problem with space that is everything is...

1 answer  ·  posted 9y ago by Jim2B‭  ·  last activity 8y ago by Jim2B‭

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Rigorous Science Changing Earth's rotation rate

Variations of this question have been asked and answered previously but I am looking for something specific. Situation: Earth's body (mantel and crust) rotate at different rates than it's core (I ...

1 answer  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭