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Q&A Can there be planets with extremely strong magnetic fields?

Wikipedia states that the strength of the magnetic field near a kitchen magnet is approximately 5 mT ($5 \times 10^{-3}$ Tesla), roughly 1,000 times as strong as Earth's magnetic field in that same...

posted 9y ago by HDE 226868‭  ·  last activity 9y ago by HDE 226868‭

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Q&A How to make a rogue planet liveable?

The main problem would be energy. Without a star as energy source, you will have to produce all the energy yourself. You'll need a lot of energy, so probably fusion is the right source (note that i...

posted 9y ago by celtschk‭

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Q&A Properties of air cloud in space

You need enough air that its own gravity holds it together. However that means in the center you'll have much more than atmospheric pressure; indeed I don't think your air will be gaseous in the ce...

posted 9y ago by celtschk‭

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Q&A Properties of air cloud in space

Reminds me a bit of a story where a guy makes a very small station with gravity and an atmosphere by having a very small sphere of nutronium sealed and magnetically suspended in the center. The gra...

posted 9y ago by AndyD273‭

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Q&A Ideal short-term organic engine

The power source There are existing biological power sources that your DNA chimera could use to "power" the muscles, like the organs of an electric eel. The organs could produce electricity and pr...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A Great Flying Cthulhu

The largest so-far known flying animal on this here earth was the quetzalcoatlus. At 10 meters, its wingspan falls far short of 1000 feet you mention. (image from wikimedia) However, the mecha...

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

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Q&A 'star factory' that a planet orbits?

Say it's a factory that takes hydrogen and creates fusion. If the machine had a nebula with lots of hydrogen or a gas giant near by, then automated machines could collect it and bring it back to th...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A Repulsive Universe

I guess atoms would still form (hydrogen, some helium, traces of lithium). However there won't be galaxies or stars, as it's exactly the attractive nature of the gravitation that creates that type ...

posted 9y ago by celtschk‭

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Q&A Can a star be so distant/isolated that its 'Earth' can't see other stars?

It's totally possible (sort of)! Such stars are called - not surprisingly - intergalactic stars. These stars are often referred to as hypervelocity stars, because in order to reach galactic escape...

posted 9y ago by HDE 226868‭  ·  last activity 9y ago by HDE 226868‭

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Q&A Surviving the world of zombie mosquitoes

Once the humans figure out that the zombie fungus will help make the planet more hospitable, they'd want to get the process started as quickly as possible. They might not want to start the process...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A How do you deal with multiple instances of a person?

Path 3 if it's possible. Since the Remnanter's are basically data, and since sharing data is what computers do, the only really tricky part for syncing them up is figuring out what format to put th...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A Significant day-to-day impact of having eyes on palms of hands?

Hands are now useless. We use our hands to carry lots of things. This generally involves curling our fingers around something, which in turn blocks the palms of our hands. If we had eyes on our p...

posted 9y ago by HDE 226868‭  ·  last activity 7y ago by HDE 226868‭

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Q&A What is the basis for a hot summer and a cold winter climate?

Other answers and comments mention axial tilt, and I agree that should be part of your thought process. You might also add something akin to the El Nino - La Nina cycles. On an irregular but roug...

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

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Q&A Is a gas giant more massive than its star possible?

I don't really think so... The largest a gas giant can get without being a star itself is a L class brown dwarf, which is just under the size needed for fusion to start. The least massive star kn...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A Size for bubble-ring generation ship

So to figure out size, you have to determine all the stuff that needs to go in it. First, population. On the low end, the minimum viable population could be around 180 people, and with the right...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A Could humans survive on a planet with only deuterium 'heavy water' made with hydrogen isotopes?

It depends. Heavy water proves toxic to human cells at levels ~20% of a human's body weight (although other sources give 25%). At lower levels, however, it's harmless. Given that ~2/3 of a human's...

posted 9y ago by HDE 226868‭

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Q&A Society rules for marriages and love on multigeneration ship

20000 people is a huge population on a generation ship. With careful breeding 200 people have enough genetic diversity to support 80 generations (~2000 years) without running into problems. With...

posted 9y ago by AndyD273‭

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Q&A What are the cons and the pros of using the Stack Exchange reputation system as a currency?

One disadvantage is that it would tie monetary gain to hive mind thinking. Say you live in an area where the majority of people see women as second class citizens. If you get up and say "You kno...

posted 9y ago by AndyD273‭

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Q&A Possibility of a civilization on (or around) Planet Nine

The major problem here is that, while we don't know for sure what this planet is like - after all, the paper (Batygin & Brown (2015)) was based on simulations of the movements of Kuiper Belt Ob...

posted 9y ago by HDE 226868‭

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Q&A Effects of a warp field based super-speed power

He can already move at 400 mph on the ground. At those speeds you don't want to do anything that requires maneuvering, like dodging a tree. There is a reason they use the salt flats for things like...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A How would the sudden destruction of Mars affect Earth?

The effect of Mars on Earth is negligible. The total force between the planets is — at their closest approach — $$F_{\text{max}}=\frac{GM_{\text{Earth}}M_{\text{Mars}}}{r_{\text{min}}^2}\approx8.6...

posted 9y ago by HDE 226868‭  ·  last activity 9y ago by HDE 226868‭

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Q&A What if androids out-perform humans at interpersonal relationships?

Because the android can be whatever you want it to be, I think the personality will be modular, and that people will be able to buy personality types that they want or that will fit their mood that...

posted 9y ago by AndyD273‭

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Q&A Are four lungs possible and what would their effects be?

It's quite possible, and some animals already have them. Some arachnids have what are known as book lungs - small respiratory cavities that actually are not lungs, but different respiratory organs...

posted 9y ago by HDE 226868‭  ·  last activity 9y ago by HDE 226868‭

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Q&A Are there any real-world ingested poisons with these characteristics?

Rat poisons are a good start Thallium is one, and was widely used. Depending on dosage Thallium can be either fast or slow acting, potentially taking several weeks from the initial poisoning. There...

posted 9y ago by AndyD273‭  ·  last activity 9y ago by AndyD273‭

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Q&A Volcanic Debris Clouds In Planet's Low Orbit?

I think you are pushing the boundary of believability a little too far, at least for someone who is somewhat familiar with orbital mechanics. (That may or may not be a problem for your intended aud...

posted 9y ago by Canina‭

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