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Q&A

Posts tagged geophysics

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Q&A (Semi) Believable way to quickly submerge a large landmass

I once before asked a question on how to quickly submerge a large landmass/continent. The answers there basically concluded that literally ''Sinking'' (a la Atlantis) is pretty much impossible to...

3 answers  ·  posted 2y ago by Blue Devil‭  ·  last activity 2y ago by Blue Devil‭

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Q&A Could an enormous structure be used to attract rain by acting as an artificial mountain?

If it were possible to build a giant geodesic dome tens of miles in diameter, what effect would it have on nearby weather? If built in an arid climate like the Sahara or Australia, would it be li...

3 answers  ·  posted 3y ago by Stonecraft‭  ·  last activity 3y ago by Stonecraft‭

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Q&A Impacts of a moon falling on an Earth-like planet?

In the world my friend and I are making, the dark lord makes one of the planets uninhabitable by causing a moon, about the size of our own, to fall on it. About 7000 years later, it is unnaturally ...

3 answers  ·  posted 3y ago by skout‭  ·  last activity 3y ago by skout‭

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Q&A How could formamide lakes form on an exoplanet?

I've been recently looking into alternative biochemistries for life and the environments were these could be found. I already asked a question about how ammonia oceans might form a while back. Toda...

3 answers  ·  posted 3y ago by TheDyingOfLight‭  ·  last activity 3y ago by TheDyingOfLight‭

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Q&A How to tackle one or multiple submerged continents

A part of the story I am writing involves two continents that centuries before the story takes place sunk into the sea. I want to have a way to explain this that does not come down to just the sea...

5 answers  ·  posted 3y ago by Blue Devil‭  ·  last activity 3y ago by Blue Devil‭

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Q&A How could you build an artificial planet-sized magnetic field?

I'm conceiving of a world where humans can readily terraform worlds that were once considered "dead" due to the planet's magnetic field being long gone. In such a situation, what could humans do t...

1 answer  ·  posted 3y ago by Richard Boone‭  ·  last activity 3y ago by Richard Boone‭

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Q&A Creating flying cities

Writing about suspended cities within a planet's atmosphere! The story itself focuses on the air forces that fight for each of the hundreds of floating city states living in the sky, but that's her...

7 answers  ·  posted 4y ago by StarHustler‭  ·  last activity 3y ago by StarHustler‭

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Q&A If a world had a massive single giant world tree could it stop an earthquake?

You know stuff like Yggdrasil tree but just a normal tree that is the biggest and tallest in the world. If the roots grow to surpass the continental and oceanic plate either it only cover some par...

4 answers  ·  posted 3y ago by Li Jun‭  ·  last activity 3y ago by Li Jun‭

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Q&A How could a very strong impact on a planet create deformations on the opposite side?

Update (6/20/19): I have received some great answer here and they all mostly point to the fact that while effects on the opposite side of the planet are possible, the deformation may or may not re...

5 answers  ·  posted 3y ago by syntonicC‭  ·  last activity 3y ago by syntonicC‭

Question physics geophysics
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Q&A Can a liquid sand ocean exist naturally?

I'm talking about this sort of liquid sand: https://www.youtube.com/watch?v=My4RA5I0FKs "Desert-as-sea-analog" is present in many media, but often they lean heavily into fantasy, and it seems not ...

4 answers  ·  posted 3y ago by M Arif Rahman Winandar‭  ·  last activity 3y ago by M Arif Rahman Winandar‭

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Q&A How Can the Coastlines Look Similar In Spite of the Cooler Temperature

The established fact is that the shape of a planet's continental coastlines is determined by the planet's climate. Higher temperatures mean less ice, which ultimately means higher sea levels. (Ca...

5 answers  ·  posted 4y ago by JohnWDailey‭  ·  last activity 4y ago by JohnWDailey‭

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Q&A Earth tilt changes due to space launches

How many rocket launches are needed to change the axial tilt of the Earth so much that it is noticeable with instruments available today? We can assume that we are talking about the heaviest rocke...

1 answer  ·  posted 4y ago by Razvan Socol‭  ·  last activity 4y ago by Razvan Socol‭

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Q&A How would constant rhythmic tsunamis affect the coast lines of the Atlantic Ocean?

Premise: a massive organic structure sits somewhere in the Atlantic Ocean giving of an intermittent telekinetic pulse. This would presumably create a constant chain of tsunamis. What sort of abnor...

1 answer  ·  posted 4y ago by Michael Faraday‭  ·  last activity 4y ago by Michael Faraday‭

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Q&A Any potential problems with the density of a planet with a volume 8 times that of Earth but the same surface gravity as Earth?

Assuming that there is an Earth-like planet that has 8 times the volume, 2.83 times the radius, and has the same surface gravity as Earth, and has oceans; what are potential problems concerning the...

1 answer  ·  posted 4y ago by DRY1994‭  ·  last activity 4y ago by DRY1994‭

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Q&A Oceanic crust formation

I'm working on a earth-like planet with a much lower sea level (like 3000m so the mid-ocean ridge would form many islands) but is that even possible? Will the emerged ridge make some weird stuff an...

1 answer  ·  posted 4y ago by Jean-Abdel‭  ·  last activity 4y ago by Jean-Abdel‭

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Q&A How might the cooling of the Earth's core be accelerated?

Essentially, what would be the most efficient way of causing the Earth's core to cool as much as possible without damaging human civilization in any other way (the outcome can damage it, but not th...

2 answers  ·  posted 4y ago by T. W.‭  ·  last activity 4y ago by T. W.‭

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Q&A Could a natural satellite in geosynchronous orbit be used as a counterweight to a space elevator?

Could a natural satellite in geosynchronous orbit be used as a counterweight for a space elevator? Does the counterweight need to be of approximately the same weight as the anchor? If so, I suppose...

1 answer  ·  posted 4y ago by paltrysum‭  ·  last activity 4y ago by paltrysum‭

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Q&A Is an offset mountain range plausible?

For my world, I would like a coastal mountain range that partway along its length is offset by a few (say, 100) kilometres, forming a pass through the mountains, like so: (N.B. I've drawn this ...

3 answers  ·  posted 5y ago by walrus‭  ·  last activity 4y ago by walrus‭

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Q&A Can a dual planet have an orbit around the Sun similar to Earth's?

This is a sequel to my previous question How big could a moon be before its orbit became too unstable or tidally locked to its planet OK, let's imagine that the thing everyone thought was a moon w...

4 answers  ·  posted 5y ago by shieldedtulip‭  ·  last activity 5y ago by shieldedtulip‭