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Q&A

Posts tagged earth-like

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Q&A How would pneumatics in a world with a denser atmosphere change?

I've thought of a super-earth with 30% higher gravity, a denser atmosphere, which facilitate the willing suspension of belief for my giant fireflies that terrorize the local humanoids. Due to the h...

2 answers  ·  posted 4y ago by seriousbusiness‭  ·  last activity 4y ago by seriousbusiness‭

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Q&A Civilization on an Earth-like planet without using waterways for transport

On Earth, civilization grew up around river valleys. Rivers are useful as a water source, a food source, and a waste disposal system, but their most important function to a civilization is enabling...

2 answers  ·  posted 4y ago by Snowbody‭  ·  last activity 4y ago by Snowbody‭

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Q&A Is It Possible to Have Different Sea Levels, Eventually Causing New Landforms to Appear?

I'm trying to explain a large continent-sized archipelago that doesn't run in any particular direction. As such, plate tectonics cannot possibly explain its existence. This is an Earth-like planet....

7 answers  ·  posted 4y ago by overlord - Reinstate Monica‭  ·  last activity 4y ago by overlord - Reinstate Monica‭

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Q&A How to get earth like conditions with a Hollow-World?

For my space-fantasy setting I'm considering using the concept of Hollow-Worlds. I devised in-universe reasons for the presence of a day night and season cycle. The Hollow-world's "Inner-sun" cy...

5 answers  ·  posted 7y ago by Trismegistus‭  ·  last activity 4y ago by Trismegistus‭

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Q&A What could make an insect race intelligent?

TL;DR: I want a society which behaves as a hive. Is it plausible and how to achieve this? The setup: Different planet in our universe. In other words: Normal, physical rules apply, there is no mag...

7 answers  ·  posted 9y ago by Pavel Janicek‭  ·  last activity 4y ago by Pavel Janicek‭

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Q&A How would mountainous landscape look like after remodelling it with nuclear warheads?

As conclusion of this question it seems that under a dense atmosphere it would be a good idea to place the main city in mountains. Just there is the inconvenient issue that top of mountains lack fl...

2 answers  ·  posted 4y ago by Shadow1024‭  ·  last activity 4y ago by Shadow1024‭

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Q&A What is the fastest an earth-like planet can spin and still support life, and would it be possible to launch space-craft from it?

I was wondering, if a planet in similar size and mass to earth would have, from its creation, been spinning at this hypothetical planet speed limit (with it somehow staying in once piece) could lif...

1 answer  ·  posted 4y ago by The Silhouette‭  ·  last activity 4y ago by The Silhouette‭

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Q&A Which Stars Would Best Suit For the Habitable Zone of The Nine Norse Earths?

In an alternate universe, the nine realms of Norse mythology--Midgard, Asgard, Vanaheimr, Jotunheimr, Alfheimr, Hel, Nidavellir, Niflheim and Museplheim--are actual, real-life "Earths", in the sens...

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

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Q&A Can my planet have a very thin atmosphere only at the poles?

While thinking about Starfish Prime's answer to the question Algae using UV light from auroras for photosynthesis, I considered the possibility of an alternate Earth which has a normal, Earth-like ...

3 answers  ·  posted 4y ago by HDE 226868‭  ·  last activity 4y ago by HDE 226868‭

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Q&A Possibile explanation for a [somewhat] realistic floating continent scenario?

I'm writing a story that takes place in a world where people live on continent-sized chunks of earth (basically the size of tectonic plates) suspended in the air, left over from some cataclysmic ev...

2 answers  ·  posted 4y ago by Dave Murdock‭  ·  last activity 4y ago by Dave Murdock‭

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Q&A Will my planet work? (size, gravity, atmosphere)

I was going to sort this all out beforehand, and then write the book, but when the writing flows... you make hay. I am a perfectionist/details-oriented person, but you lose me on math/hard science....

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

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Q&A distance between climate/geographical changes

I have an Earth-like world (approximately 1000CE technology--horse/mule for travel) that I want to have my characters traverse over the course of the book. I want the areas to have distinct geograp...

1 answer  ·  posted 4y ago by Heather M‭  ·  last activity 4y ago by Heather M‭

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Q&A Plausibility of (large) continents on a world with hundreds of tectonic plates

Suppose an earth-like world with roughly 500 major tectonic plates. Question What is the plausibility of such a world to sustain (large) continents? Why? Further clarifications: speed of pla...

3 answers  ·  posted 4y ago by Arash Howaida‭  ·  last activity 4y ago by Arash Howaida‭

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Q&A Growing blue trees

What about the atmosphere of earth makes green the best color for plants, and what would have to change to make blue the best color? The fact that these changes could not happen on earth, an so wou...

7 answers  ·  posted 6y ago by menolo homobavonez‭  ·  last activity 4y ago by menolo homobavonez‭

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Q&A Conditions of a more ideal version of earth

What would be the specific conditions required for a planet to be a more ideal version of Earth? I want the world to have a much larger proportion of land covered by lush jungle and forest ecosys...

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

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Q&A Consequences of Earth-like planet with denser atmosphere

Assumptions - atmospheric pressure is 3 atm, but partial pressure of oxygen is comparable to earth, the rest is mostly nitrogen. Planet is tidally locked and insignificantly heavier. (for simplicit...

2 answers  ·  posted 7y ago by Shadow1024‭  ·  last activity 4y ago by Shadow1024‭

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Q&A Can I have a forest in the rain shadow of a mountain range?

I've pretty much finished the map of a world I'm building for a fantasy novel, but I've realised that on one of the continents I need there to be forest on both sides of a large mountain range. I'v...

6 answers  ·  posted 4y ago by Nora R‭  ·  last activity 4y ago by Nora R‭

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Q&A Ecological balance in a pleistocene+ world

So a friend is working on a worldbuilding/rpg project and I'm "beta-testing". He drew up an earth-like map and set the players start locations. Then I ask him about fauna. Will it be modern earth? ...

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

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Q&A Siamese Twin Planets?

Premise I want to explore the possibility of a planet that is extremely misshapen. If we were to extrapolate what we have observed from our solar system and the extra-solar planets discovered so f...

3 answers  ·  posted 5y ago by Arash Howaida‭  ·  last activity 5y ago by Arash Howaida‭

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Q&A If Earth's Oceans Were as Deep as Europa's

Earth's deepest point, the Challenger Deep, is almost seven miles below sea level. By contrast, Europa is smaller than even Earth's moon, yet its oceans are anywhere between 40-100 miles deep! So t...

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

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Q&A What if two planets orbited each other and also a star?

Say another Earth orbited the Earth, instead of the Moon. What effects would that have? Would gravity change in relation to the planets slightly during their orbits? I am world building and am tryi...

4 answers  ·  posted 9y ago by Chris‭  ·  last activity 5y ago by Chris‭

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Q&A How do I give my planet a stronger magnetic field? Playing with variables

Let's say I have a terrestrial planet superficially like earth, except that it rotates much slower (about 10-15 days per rotation) and its atmosphere is ideally several times thicker. If I want thi...

2 answers  ·  posted 5y ago by n_bandit‭  ·  last activity 5y ago by n_bandit‭

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Q&A What would be the tallest possible height for humanlike creatures in earthlike conditions?

This is about "giants" inhabiting a fictional earth-like planet somewhere in the Universe (like those in the movie Prometheus, for example). Assuming that all the conditions (temperature, gravity,...

6 answers  ·  posted 7y ago by user100487‭  ·  last activity 5y ago by user100487‭

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Q&A How could a foam habitat support animal life?

Knowing foam is formed by trapping pockets of gas in a liquid or solid, what could a foam able to support life on an earth-like planet be made of? This foam ought to be stable enough and large eno...

1 answer  ·  posted 5y ago by Halhex‭  ·  last activity 5y ago by Halhex‭

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Q&A A planet of ice and fire

I had an idea for a planet which has very hot days, roughly 40 degrees C on average, and very cold nights, average -5 degrees. These figures are subject to change. Of course, there are places which...

7 answers  ·  posted 5y ago by SealBoi‭  ·  last activity 5y ago by SealBoi‭

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Q&A What are the power options for intelligent humanoid robots?

In my future setting on Earth (or an Earth-like planet; haven't decided), the fields of robotics and AI have taken off and we have intelligent, ambulatory robots. (They were initially thought of a...

10 answers  ·  posted 9y ago by Monica Cellio‭  ·  last activity 5y ago by Monica Cellio‭

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Q&A Terraforming the Nine Earths, Episode I: Could Cyanobacteria Thrive in Muspellheim?

Long ago, I asked a question on how to make the Nine Realms of Norse mythology--Niflheim, Muspelheim, Asgard, Midgard, Jotunheim, Vanaheim, Alfhiem, Svartalfheim and Helheim--a reality in regards t...

1 answer  ·  posted 5y ago by JohnWDailey‭  ·  last activity 5y ago by JohnWDailey‭

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Rigorous Science Of strange atmospheres - the survivable but unbreathable

Most gases that are toxic to breathe also do nasty things to the skin when they're in the atmosphere at dangerous concentrations - and one is walking around without sealed protective clothing; sulf...

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

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Q&A What would be the effects on a planet orbiting a shedding red giant?

In a sci-fi RPG I eventually intend to run for a couple of friends, I had the idea of them visiting ancient ruins on a planet orbiting a shedding red giant. Now, ignoring the problem of intelligen...

1 answer  ·  posted 5y ago by Nobbe‭  ·  last activity 5y ago by Nobbe‭

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Q&A How would trees communicate?

An alternate world is populated by mainly intelligent trees and other plants. These plants are almost exactly the same, biologically, as Earth's plants. The world's climate and geology are very sim...

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

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Q&A Are these climate zones somewhat realistic?

I have been slowly losing my mind trying to build a somewhat realistic climate map for a fantasy world I'm building for my book. A geographer I am not... I modeled the climate zones and such after ...

3 answers  ·  posted 5y ago by Nora R‭  ·  last activity 5y ago by Nora R‭

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Q&A Could lakes of mercury exist on an Earth-like planet?

I am working on a planet that has insignificant (almost 0 degrees) tilt, no moon, rotates twice as fast as Earth. I intend to create quite an exotic "biome", so to speak, in a subtropical desert z...

1 answer  ·  posted 5y ago by RavenInvazion‭  ·  last activity 5y ago by RavenInvazion‭

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Q&A Snow on a low-gravity, high-pressure world

Disclaimer: I am not a meteorologist. Snow forms when supercooled water droplets nucleate onto particles in the atmosphere. After forming, they grow further by both tumbling around within the clou...

2 answers  ·  posted 5y ago by BMF For Monica‭  ·  last activity 5y ago by BMF For Monica‭

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Q&A What is the largest I can make my water planet, while remaining within Earth-like parameters?

What is the largest planet I can get, while still remaining within Earth-like parameters? My concern is with gravity, water pressure and atmospheric pressure. Escape velocity is less of a concern. ...

1 answer  ·  posted 5y ago by Jacco‭  ·  last activity 5y ago by Jacco‭

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Q&A Perpetual storm on Earth

On an Earth like planet, is it possible to have a perpetual storm surrounding an island? And if so what would cause/maintain this storm? Edit: To be a little more clear, I'm looking for a storm st...

3 answers  ·  posted 7y ago by Tezra‭  ·  last activity 5y ago by Tezra‭

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Q&A How small in diameter a planet can be while retaining most of Earth's properties?

Suppose that I have a planet very similar to Earth. It has the same level of gravity, water-land ratio, temperature, air composition, rotation and revolution speed, tectonic activities, temperature...

2 answers  ·  posted 7y ago by 絢瀬絵里‭  ·  last activity 5y ago by 絢瀬絵里‭

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Q&A Can rocky hills similar to the Scottish highlands be located next to a bog?

I've written about these rocky hills with short grass, gravel, shrubs, and big boulders. At the bottom of one of the hills is a big bog. Basically I've designed some buildings to be sticking out of...

1 answer  ·  posted 5y ago by Julia‭  ·  last activity 5y ago by Julia‭

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Q&A Is is plausible for an Earth-like planet to have all of its land located in one polar hemisphere?

I made a map for my fictional world and it would be convenient for the story to have all of it affected by a somewhat similar climate. The map is made of several pieces of a Pangaea-like continent...

4 answers  ·  posted 5y ago by MadCake - Reinstate Monica‭  ·  last activity 5y ago by MadCake - Reinstate Monica‭

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Q&A Designing a super-comfortable Earth analog

Being an engineer and someone who hates hot summers and frigid winters, and someone who really likes the Rocky Mountain view, I can not help but wonder if we humans could get to design a whole new ...

2 answers  ·  posted 5y ago by Meatball Princess‭  ·  last activity 5y ago by Meatball Princess‭

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Q&A Is it safe to have an earth-like temperature for a 48-hour day-night cycle on a big planet?

I want this planet to be very earth-like on all aspects except for its size and the day-night cycle. The circumference is three times greater than the earth's circumference. The day-night cycle las...

2 answers  ·  posted 5y ago by brendt‭  ·  last activity 5y ago by brendt‭

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Q&A Will food logistics limit the population of a civilization of obligate carnivores with modern technology?

I'm imagining a world populated with a species of intelligent, social, and "modern" (in terms of technology) humanoids. For the purposes of this question, they and their world can be near identica...

7 answers  ·  posted 5y ago by conman‭  ·  last activity 5y ago by conman‭

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Q&A Existence of a celestial body big enough for early civilization to be thought of as a second moon

Is there a possible scenario in which once a year a celestial body can be seen from the surface of the Earth-like planet for a short period of time? With it being big enough for early civilizatio...

2 answers  ·  posted 5y ago by shootshi‭  ·  last activity 5y ago by shootshi‭

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Q&A Can you critique my sea temp map and answer a couple of specific questions?

I'm working on yet another iteration of a world map project. I'd like to ask for some opinions on the sea temperature map I've done: I also have a few specific questions about some areas on the...

1 answer  ·  posted 5y ago by EojjN‭  ·  last activity 5y ago by EojjN‭

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Q&A Where should you go if gravity pulled sideways?

If the entire Earth's gravity immediately shifted so it was pulling from East to West, what should people do? Keep in mind that this is not reversed, but merely tilted sideways, and maybe at an an...

7 answers  ·  posted 7y ago by margalo‭  ·  last activity 5y ago by margalo‭

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Q&A Areas with high energy on an Earthlike world

In an earth-like world, what can I provide as examples of areas where high energy is generated naturally? I'm looking for sources of energy other than heat, for e.g, volcanoes and geothermic vents.

6 answers  ·  posted 5y ago by Lord of the Larks‭  ·  last activity 5y ago by Lord of the Larks‭

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Q&A Would plants on a planet orbiting a star like ours, have any different color?

So I'm currently designing an alien habitable planet that orbits a star similar to our Sun. Assuming that the composition of the planet's atmosphere, as well as its pressure, are similar to the one...

3 answers  ·  posted 5y ago by ΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣ‭  ·  last activity 5y ago by ΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣ‭

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Q&A How long could humans survive on my planet?

I have created a planet which is a clone of Earth. Except I messed up where wasps, cobras and scorpions were concerned and they have turned out to be the size of elephants (everything in proportio...

3 answers  ·  posted 5y ago by Tim Richards‭  ·  last activity 5y ago by Tim Richards‭

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Q&A How to design an electrical grid for a flare star planet?

The most popular type of stars are red dwarves, which regrettably tend to be flare stars. Yes, I know that geomagnetic storms and power lines do not like each other. Technology level: More or less...

2 answers  ·  posted 5y ago by Shadow1024‭  ·  last activity 5y ago by Shadow1024‭

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Q&A Possible sky colors compatible with life on earth

This question has been asked in similar forms on this site already with some good answers like here: What Color Can the Sky Be? How could the sky be orange in a breathable atmosphere? What woul...

1 answer  ·  posted 5y ago by And‭  ·  last activity 5y ago by And‭

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Q&A Determining factor(s) for making creatures robust to square cubed law

Premise and research I am simply trying to find a reproducible framework for use with creature-design. In my research I have found the larger an animal is, the more likely that animal is to break ...

1 answer  ·  posted 5y ago by Arash Howaida‭  ·  last activity 5y ago by Arash Howaida‭