Posts tagged earth
Purely geography only. I'll break down into points. What I'm giving you below is just to narrow down the possibility, but otherwise, quite arbitrary. Assuming a large archipelago of islands exist...
I'm working on a story set in a planet of permanent dusk/dawn, and with a dark side that never sees the light of sun. I know that a planet tidally locked to its star would (roughly) look like this,...
Would it be possible for a fully modern civilization (i.e. quite like our own, perhaps slightly more advanced, with near-future tech) to arise on an Earth-like planet devoid of uranium, plutonium, ...
Suns are stars. They are orbited by planets, and sometimes other stars. Planets are orbited by moons. Reasonably advanced civilizations may launch artificial satellites into orbits around their pla...
I'm creating a planet inhabited by beings who have a body temperature that is colder than humans. What conditions on the planet would require them to have evolved this trait? Thanks
Earlier this year, a second alien saucer came to Earth and stopped 1 kilometer above the central African nation of Wakanda. The Wakandans are fine with this and refuse to let anyone investigate or ...
You may assume the rainfall will match that of a Tropical Rainforest at their wettest (304 in. annually). How would this change the landscape over time? (0-100 years)
How could I calculate the habitable bounds, in relation to temperature, near the twilight zone of Gliese 667 Cc? Assuming an Earth-like atmosphere and no tidal working. Here are the numbers that ...
I'm trying to build a world that is almost completely water, but I couldn't come up with an explanation for WHY the world was like this. The world has the same gravity and atmosphere of Earth. It a...
First, I guess the conditions of the world are in order. It's approximately 85% the mass of earth and there is going to be a full ecosystem with all the usual types of bugs, insects, trees, and pre...
The movie Back to Future revealed that Mr. Fusion (MF) produced by Fusion Industries (FI) was in widespread use in 2015. What the movie did not reveal was the FI was privately funded by Bill Gates....
Human evolution has a reasonably complete fossil record pointing to the fact that we and apes evolved from a common ancestor within the last 10 million years or so. But I want a world where it coul...
I'm making five habitable planets the size of earth as moons for a gas giant the size of Jupiter. Then I want to add many more smaller moons, Our Jupiter has 67 moons, I want as many small moons...
I've seen multiple posts on destroying the Earth, but is it possible for humans to reverse the spin of Earth? In order words, considering modern technology at our disposal, is it possible for hum...
We know that the inner and outer core of our planet is made up of heavy, valuable metals in high concentrations. So, what if a technologically advanced, space-faring civilization wanted to mine tho...
Scenario: Say we have a massive release of greenhouse gases into Earth's atmosphere, however much for the ocean around Antarctica to get just warm enough for hurricanes to form during the summer (2...
I've been thinking about terraforming and planets in general. We can look at the planets we know that might be terraformable - Venus and Mars - and understand the technical requirements for doing ...
I wrote a story in which humans live on huge trees on a fictional habitable planet similar to earth. the tree would be even more huge than the hometree from avatar. The tree is not taller than th...
I know there are questions similar to this, but I'm not very scientific minded, and wanted to check with you guys how this would work exactly. I don't care what else I need to add into the equation...
In a world very similar to ours, rain has a high concentration of simple carbohydrates in it, enough to sustain life on the surface. After some rainfall, this sugary rainwater is left behind and so...
Twenty years ago, a 40km diameter alien saucer came to Earth, and stopped 2km above the Atlantic ocean, somewhere near the midpoint between Casablanca, Morroco and Natal, Brazil but over internatio...
I am considering setting my next D&D campaign on an earthlike but small planet. By "small," I am imagining a world that still feels vast, yet is circumnavigable over land and/or water with low ...
If you want to tell a story of a lonely island on earth, isolated from the rest of the civilization, how many years do you have to go back to be realistic? I think about a story about 350 people w...
This concerns a habitable, earthlike moon orbiting a gas giant, which is not tidal locked, and has an elliptical orbit eccentric enough to avoid frequent deep winter freezes (the freezes do happen,...
According to Wikipedia, ...plants are green because chlorophyll reflects green light. And chlorophyll is found in all plants because it is the molecule that absorbs the light that is used to ma...
Based on the desert world from this question I need to transport around 500 cubic kilometres of water / year across a desert. Using this calculator. this can be achieved if the main feeder canal is...
This question has similarities to this one but concerns canal travel in more ancient times and is aimed at finding an approximate speed of flow not variables. Background Assume an Earth-like world...
In my desert canal world all water is supplied from the poles to the temperate zones via a canal network. I want to work out the amount of water that that is needed, so that I can work out the dime...
Imagine an earth-like planet on which gravity is reduced by 20%-30% every 15 months. The low-grav-effect should start slowly, reaching its peak/bottom of round about 0.7 g after 6 weeks and should ...
In a fictional setting, an Earth-like planet is orbiting another, Jupiter-like planet. For explanation see my previous question Which astronomical or cosmological event would explain periodical lo...
For this question, assume that the planet is Earth-like in almost every way, and is in a system like ours...the distance from the sun, orbital period, rotation, axial tilt, etc is all pretty much t...
I will be writing a short story about humans landing on an earth-like forest planet with a gravitational force of about 3 meters per second squared (In contrast, Earth has a gravitational accelerat...
For a SciFi project I work on I have a space-station orbiting earth that uses an 8 hour 3 shift system for its staff. Each shift is assigned to one-third of the countries and organizations on earth...
The enormous shield volcano that this question was based on was held up by magic or God. It presented some very interesting conditions for alternate worlds so I thought I would develop that train o...
I was making a planet for a game and I was wondering how the world would be affected if it never had salt water, but instead a huge fresh water supply. Then I thought about what it might do to the ...
How can I arrange for a planet to have a much greater temperature range between the poles and the equator without it being tidally locked? Edit: By "much greater" I mean the temperature at the pol...
What would be a situation in modern times where normal, healthy people would want to get infected by a non-curable, but non-lethal, virus? A virus that would have pretty nasty symptoms. There...
I need to know if it'd be possible for a underground ring-like structure of immense proportions and alien design to go unnoticed by modern day sonar, radar, and geological surveying. For an idea ...
The article Why Can't All Animals Be Domesticated? on Live Science sets out a list of criteria that a species needs to meet in order to be successfully domesticated by humans. In short, that list s...
I have an Earth-sized planet in a Milky Way-like galaxy with all the land located at the equator, in a 2000-km line around the planet. There are small islands near the landmass, but no land anywher...
I just asked myself what is the role of the mountains on Earth? Well there's a well known role for the climate and weather. But is there a kind of physical or geological role? What would happen i...
What planetary parameters such as plate tectonics and volcanism etc would best encourage the most uneven planetary surface on an earth like planet? I want a world to be covered in very uneven terr...
I live in Cape Town, South Africa where it is a very real possibility that not a single drop of water will be left in our dams come March 2018. THIS is a news article that suggests that at a gover...
Saturnian moons Iapetus, Atlas, and Pan all have equatorial ridges. There's a few explanations as to why, but the theory behind why Iapetus has one is what intrigues me. (https://en.m.wikipedia.org...
I created this climate map based on the Koppen Climate Classification map. In this scenario Australia is moved 10 degrees of latitude further south and the Lake Eyre basin is filled (shown in map...
Prima walked out to the observatory's main deck. There, as she had expected, Secunda was sitting in the grass, looking up at the stars. "Pretty, isn't it?" said Secunda, as she craned her n...
I am looking at realistic options that could damage the Earth so severely that it would be impossible for mankind to survive there and that would also not allow us to just colonize other planets or...
There seems to be a connection between orbital revolution (one year) and distance from the star the body orbits. For example, Earth orbits the sun at a distance of 93 million miles and completes o...
I've wondered about this for years. Reading one of the books in the Inheritance Cycle, I came across a stipulation. It stated that if observed enough, a grain of sand could render to the viewer the...
In the MARS series of National Geographic, an organisation is steadily colonizing Mars by sending a handful of people every few months. However, these aren't ordinary people, of course; they are to...
