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Questions tagged [earth-like]

For questions regarding planets similar to Earth in most respects. This tag should be used when describing a planet that follows the rules of Earth with exceptions outlined in the question. Usually questions using this tag will be about the differences and the impacts of those differences.

6
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1answer
1k views

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
vote
0answers
77 views

How would an “minecraft-like” dimension behave? [closed]

The "dimension" I'm building, consists of earth-like plane that stretches on to infinity. It's a soft sci-fi universe and this dimension is man-made. The land has infinite mass, I don't know what ...
5
votes
3answers
182 views

What is the optimal sleep scheduling strategies for a 24h sleep cycle on a 48h day planet?

I have a planet with days that is exactly two times longer than in real world. I'm trying to find out the best time to sleep if people still need as much sleep as they do even if they are on a planet ...
2
votes
2answers
123 views

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 ...
4
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2answers
104 views

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 lasts ...
10
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2answers
1k views

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 civilization to ...
8
votes
1answer
125 views

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 map. ...
11
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3answers
324 views

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 ...
2
votes
3answers
220 views

What kind of extinction event could solve Global Warming?

The world I'm creating will be referred to as E. Current E population is growing exponentially, and the population will become completely unsustainable soon. Global Warming is also increasing ...
15
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7answers
508 views

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 identical ...
7
votes
5answers
162 views

How should a ship call for help on a sparsely populated planet orbiting a flare star?

Technological level - similar to contemporary. Yes, I mean a watercraft, mostly big cargo carrying ships. I mean only calling for help while being in middle of ocean and not being within line of sight ...
4
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5answers
194 views

The effects of magnetism in radio transmissions

Lets say the Earth's magnetic field was stronger without specifying how much stronger. How would have this affected the development of radio transmissions? Would a much stronger field completely ...
3
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6answers
222 views

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.
4
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4answers
302 views

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 ...
5
votes
3answers
594 views

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 ones ...
4
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4answers
161 views

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 proportion). ...
9
votes
2answers
120 views

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 ...
1
vote
3answers
150 views

How can a kid be so much better than trained adults at “Monster fighting” [closed]

The world is populated not with animals but with "monsters". "Monsters" appear randomly in particular places, and can be caught using specialized devices shaped like a ball. There are many different ...
6
votes
1answer
184 views

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 would ...
5
votes
1answer
123 views

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 its ...
3
votes
3answers
209 views

Can trees and plant life grow on rock?

So I’m creating a world where the ground is mainly made of different rocks and stone in most areas - soil is sparse. Could trees and plant life grow on the stone ground if a water source is nearby? ...
13
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4answers
3k views

How tall can you build a mountain chain of bricks?

My ancient golden dragon has a lot of time, since he doesn't die of old age in my world, and a lot of magical constructs that will tirelessly built a defensive mountain chain for him. This chain will ...
7
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10answers
3k views

What mechanisms need to be in place for an advanced, peaceful society to retain high testosterone levels?

While by no means a smoking gun, there is still a reasonable amount of empirical evidence on the notion that socialization and testosterone are negatively correlated. Archaeological Evidence From ...
-2
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2answers
137 views

How to keep a country rigorous when not at war? [closed]

I'm trying to create a world that has a strong military and good citizenship even in times of peace. I'm kind of stuck at the moment, but I have done some research already, so here is a brief case ...
30
votes
7answers
5k views

How can I make raindrops bigger?

I've got an intelligent humanoid species living on a planet very similar to Earth's. However, on this planet, rainstorms are more frequent and slightly... different. Each raindrop is at least an inch ...
29
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8answers
5k views

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 ...
7
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5answers
664 views

What kind of “space force” would be needed to protect space assets in the near future?

Premise Even at present day, space assets are very valuable: Our space assets, day by day, are growing by leaps and bounds. It's the value of that satellite to the economy. - Neil deGrasse ...
7
votes
5answers
323 views

Barring all structural and stability issues, how would building a ringworld around the earth affect it?

I've looked for an answer for this, but the only information I could find dealt with the ring itself. All I want to know is what would change on the Earth if all problems were solved and the ring were ...
4
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6answers
237 views

Imposing scientifically derived requirements for holding public office

Earth Here on Earth, who serves in public office depends a handful of factors -- some of which are unsettling. In the US there is the infamous Wall Street-Washington Corridor where financial ...
5
votes
1answer
205 views

How to make a bigger planet be as similar to Earth as possible

My fantasy world is slightly larger than earth so that discovery of the continents becomes harder (about 20% surface should do it). But at the same time I want to preserve most aspects to make it like ...
9
votes
1answer
392 views

Can someone help me with ocean currents? I'm really confused

I've been working on a constructed world which started out as the home of an alien race from a sci-fi story I'm writing but just became a pure world building project. As you can see from the map it ...
8
votes
7answers
1k views

Extreme adaptation: evolutionary narrative for Vantablack-like skin pigment

Premise Inhabiting my earth-like world will be humanoid beings that have a skin tone that is as dark as Vantablack. Let's assume these human-like beings share the same ancestry as humans and we can ...
1
vote
1answer
189 views

Near spherical alien species - How can they move?

The setting On an Earth-like planet but with completely different flora and fauna there is the Great Plain. It is similar in size to the Serengeti National Park on Earth. The Plain is surrounded by ...
13
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8answers
2k views

Towers to Low Earth Orbit - How to make them usable for navigation

In a world I'm constructing the sun, the moon, and the stars are not visible but there are tower that stretch from the ground to, roughly, low earth orbit. Each one is around 200 meters in diameter ...
2
votes
9answers
626 views

What Could Cause A Kingdom To Keep Slavery Despite the Royal Family Refusing To?

Slavery in my story's world is common. Most don't see it as a good thing and slave-owners are rarely liked, but slaves are common enough nonetheless. The royal family had personally stopped using ...
-2
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1answer
99 views

Prerogative of future world [closed]

It is a thousand years in the future. Humans brains are obsolete for thinking and are used only as a central control center for organ commands and heuristic processing (reactionary or first impulse ...
4
votes
2answers
146 views

Compass on a Ringed, Earth-like Planet

Is it necessarily a given that a compass (as they magnetically function on Earth) could be made to function similarly on an alternate, Earth-like, ringed planet? Another way of asking: is it feasible ...
6
votes
3answers
162 views

How to navigate a ringed planet at night?

I'm working on a story set in an Earth-like world but with rings (say, proportionately similar to Saturn's). I'm trying to get a solid handle on how these rings would affect the sky. For the ...
40
votes
13answers
10k views

Multiple “keys,” multiple “doors”. Any “key” fits any “door” but a “key” can only be used once. How could such mechanic be described lore-wise?

I am working on a souls-like game and I would like to have an item that works like Fragrant Branch of Yore from DS2. I do not want to copy the concept of petrification from DS2 so while the item ...
5
votes
4answers
303 views

What requires more destructive energy? Destroying a planet or splitting a planet in half

I just wanna ask which option requires more destructive energy? Option 1 : destroying a planet like earth to rubble (tiny pieces of rocks) Or Option 2: splitting a planet like earth in halves (2 ...
5
votes
2answers
265 views

3-Level Roadway Engineering

I'm the city designer for a new city we're calling Morrowville. Having some of the worlds top minds, flying cars have been invented, but can only fly a few feet (2-4) from the ground and not everyone ...
0
votes
2answers
145 views

A Frozen Metropolis

Scientists have discovered an Earth-like planet in another solar system, with the same gravity, atmosphere composition, etc, and they decide to colonize it. There is only one problem, though. It is ...
9
votes
6answers
5k views

A Planet Where The Four Seasons Occur Multiple Times In One Year?

Earthlings, I live on a world where most places on my planet has four seasons, just like yours does. We also have one sun and one moon, presumably. It's been not even a year since I came of age (20), ...
1
vote
1answer
197 views

What would force the “illuminati” to cull the world? [closed]

Premise This is an uncomfortable topic, perhaps even bordering on distasteful. That being said, the world I have in mind will not be complete unless I can settle on a threshold that the "illuminati" ...
2
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9answers
302 views

How to explain the presence of a dense debris field around Earth?

I'm creating a sci-fi world similar to ours roughly 50 years in the future. Unobtanium, a futuristic metal and fuel source, was discovered in 2020. Its broad utility led to rapid advances across all ...
0
votes
3answers
1k views

Would simultaneous hermaphrodites wage war?

I have a world where populated by simultaneous hermaphrodites. Which are like human women plus male reproductive organs, penis and testicles. They could father children like human males, and bear ...
20
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9answers
5k views

How can I test to find the continent's “best” young mages?

Some background The gods who have watched over us for so long are clearly angry. They've sent us this terrible trial in the form of a giant dungeon and told us if we can't complete it they'll wipe ...
13
votes
5answers
518 views

Could people survive on earth if a day lasted 100 years?

Imagine we took earth and slowed it down so that a day lasted 100 years, could humans (or any life) survive? Let's assume that there are no ill effects of slowing it down, no massive tidal waves, no ...
4
votes
0answers
163 views

How can I change life on a planet and the presence of Nitrogen in the nitrogen cycle and what effects are there [closed]

Nitrogen makes up most of our atmosphere, it gets fixed by bacteria, legumes, etc., and enters the soil in a different form to be used by plant life. The nitrogen gets buried in sedimentary rock over ...
-5
votes
2answers
113 views

If a new planet was discovered & became a spot of constant tourism, would that decrease car pollution and give the earth's climate time to heal [closed]

if a new planet was discovered and it was possible to live there and was not too far from earth, and after it was made suitable for human life and so on and became a spot of constant tourism, would ...