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Q&A Is an atmosphere with different layers possible?

I'm making a world where you live in the air, as the surface is not survivable (like Venus). I'm going to leave out the story of the planet, as it's not important. Anyway, could there be a planet ...

2 answers  ·  posted 8y ago by Niko‭  ·  last activity 8y ago by Niko‭

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Q&A What would perforating the crust of a continent do?

Let's say a hole about the size of the Kola Superdeep Borehole spaced about every five miles across the continent of Australia. Assume no human interaction after initial placement Answers prefe...

2 answers  ·  posted 8y ago by Pulchritude‭  ·  last activity 8y ago by Pulchritude‭

Question geography geology
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Q&A Possible explanations for a world with hard to access metal deposites?

The concept of a metal poor world is one that I find deeply fascinating. In part because I fell in love with the setting that first exposed me to the concept, Dark Sun. So I want incorporate a ver...

5 answers  ·  posted 8y ago by Trismegistus‭  ·  last activity 7y ago by Trismegistus‭

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Q&A Lead-Zeppelin"“Would this be possible?

Probably going to get lots of downvotes for that name... Anyway, assume that you have a zeppelin, made entirely out of lead. What gas would be required to hold this in the air? Would this contrapti...

5 answers  ·  posted 8y ago by DevilApple227‭  ·  last activity 8y ago by DevilApple227‭

Question atmosphere gas
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Q&A Floating ships on dense clouds?

Making a world where you live in the air, as the surface is not survivable (Venus-like) but there are mountains which serve as islands. I'm gonna leave out the story of the planet as it's not impor...

1 answer  ·  posted 8y ago by Niko‭  ·  last activity 8y ago by Niko‭

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Q&A Making a plant as energy efficient as possible

Essential Question : what adaptations can be made to a crawling vine that would allow them to obtain as much energy as a top level consumer if the vine was on a planet 1 au from a sun sized star?

3 answers  ·  posted 8y ago by System‭  ·  last activity 8y ago by System‭

Question biology xenobiology
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Q&A Could a human-plant hybrid exist?

Is it theoretically possible to genetically alter humans so that they could live off solar energy like plants? What biological and physiological changes would have to be made?

3 answers  ·  posted 8y ago by Bryan McClure‭  ·  last activity 6y ago by Bryan McClure‭

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Q&A How long can humans survive in increased gravity?

One premise of my current planet-in-progress is that certain locations in the universe are inherently tied to my PIP. For example, all the people and things that have vanished in the Bermuda Triang...

2 answers  ·  posted 8y ago by Frostfyre‭  ·  last activity 5y ago by Frostfyre‭

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Q&A Could intelligent life evolve in caves?

On a world like Venus, where the surface is unlivable , would it be possible for life to evolve in caves? And if so , is there any reason for intelligence to evolve in a subterranean organism?

2 answers  ·  posted 8y ago by System‭  ·  last activity 8y ago by System‭

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Q&A Methanol/Ethanol (other alcohol) based life-form - aliens?

Purely hypothetical and kind of creative quesiton. My idea is an alien humanoid-like civilization (and basically everything alive on that planet) which uses methanol/ethanol or other alcohol as a s...

2 answers  ·  posted 8y ago by Jotunn‭  ·  last activity 8y ago by Jotunn‭

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Q&A Is this planetary system stable?

The host star has a mass of 0.90 M$_\odot$ I'll refer to this star as Helios. I'll refer to the planets as Helios One, Helios Two, etc. Helios One is 0.55 M$_{\oplus}$ and orbits at 0.75 AU. It's ...

2 answers  ·  posted 8y ago by Stephanie‭  ·  last activity 8y ago by Stephanie‭

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Q&A Is helium 3 lucrative enough to justify the mining of the moon?

I've been trying to come up with a scenario in which space stations and lunar bases are established but are considered controversial. I sort of figure that if corporations started mining the moon t...

5 answers  ·  posted 8y ago by Wazanator‭  ·  last activity 8y ago by Wazanator‭

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Q&A Shifting positions of continents

For fun (and for future evil diabolical schemes) would humans have the ability if given the finances and resources, to use some kind of massive wrenching system to pull different continents togethe...

3 answers  ·  posted 8y ago by Jacob K‭  ·  last activity 8y ago by Jacob K‭

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Q&A Biophage: A creature that kills all other creatures

Concept: For some twisted reason, a xenocidal space-race living somewhere in our vicinity decides that nothing deserves to exist. So they make a species. Any feasible size, any kingdom. It eat...

5 answers  ·  posted 8y ago by Caleb Woodman‭  ·  last activity 5y ago by Caleb Woodman‭

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Q&A How do I increase my population of my very small starter population while warding off the negative effects of inbreeding?

In my pre-bronze age city, there are roughly 20,000 individuals. 9,000 sexually mature males, 9,000 sexually mature females, and 2,000 children. For a variety of unimportant reasons, they have been...

8 answers  ·  posted 8y ago by System‭  ·  last activity 8y ago by System‭

Question society population
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Q&A Can a tidally-locked planet have a long term natural satellite?

Approximately how likely is it that a tidally locked planet would have a long term natural satellite, and where would that satellite most likely be located? What I've so far researched (and puzzled...

2 answers  ·  posted 8y ago by Angela M Phelps‭  ·  last activity 8y ago by Angela M Phelps‭

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Q&A Building a super-material - melting and boiling points

Certain elements and composites in the real world have significant melting and boiling points. The metal with the highest values is tungsten, with 3,695 K and 6,203 K, respectively. According to ou...

2 answers  ·  posted 8y ago by Frostfyre‭  ·  last activity 8y ago by Frostfyre‭

Question materials
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Q&A What motivation would people have for mining planetary rings?

People have proposed mining the moon for Helium-3 and mining asteroids for gold, iridium, and other precious metals. Suppose we have the means to do so in an economically-viable manner. We've got f...

8 answers  ·  posted 8y ago by ckersch‭  ·  last activity 6y ago by ckersch‭

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Q&A How to camouflage a meteor

What requirements would a meteor have to satisfy, to approach Earth unrecognized until hitting the atmosphere and cause climatic changes after the impact? The meteor should have at least a circum...

7 answers  ·  posted 8y ago by if-trubite‭  ·  last activity 8y ago by if-trubite‭

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Q&A Could a fractured moon conceivably result in only limited changes to earth's environment?

Say a large, stray Kuiper Belt object manages to enter the inner solar system and hits the moon, causing the moon to fracture. Say the impact wasn't devastating and left most of the moon intact whi...

3 answers  ·  posted 8y ago by Leigh P.‭  ·  last activity 8y ago by Leigh P.‭

Question space
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Q&A How could an interested billionaire deploy sensors to as much of the deep ocean as possible?

Consider a billionaire living on earth today. What would be the most effective way to deploy sensors to a vast area of the earth's sea depths? (Sea depths referring to the sea floor, and slightly a...

3 answers  ·  posted 8y ago by Others‭  ·  last activity 8y ago by Others‭

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Q&A Could the Siberian Eruption Get Any Bigger?

Background Information: 252 million years ago, Siberia erupted, releasing enough lava to fill in a volume anywhere between one and four million cubic kilometers. Any time someone thinks "large ig...

2 answers  ·  posted 8y ago by JohnWDailey‭  ·  last activity 7y ago by JohnWDailey‭

Question geology volcanoes
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Q&A How can a floral clock be made accurate enough to replace normal timekeeping?

A village is famous for its flowers and wants to bring in tourism by replacing its timekeeping and basing everything around a flower clock. Schools and shops all agree to set their times by the flo...

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

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Q&A Magic Ship Armor Causing Fog

The setup for this is complex, so I'll begin by stating the core question: In a heavy ship engagement, using energy-dissipation armor, about how much warmer will the sea get, and will that have an...

1 answer  ·  posted 8y ago by CAgrippa‭  ·  last activity 8y ago by CAgrippa‭

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Q&A How to put new spin on 'tribes living in the treetops'

From the answers I received in my previous question explaining why a humanoid society couldn't live atop giant mushroom caps, I have considered going back to my previous idea of them building their...

1 answer  ·  posted 8y ago by king of panes‭  ·  last activity 8y ago by king of panes‭