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I want a planet that is twice the diameter of earth's but has very similar gravity, atmosphere, and day length. Would doubling the rotational speed of the planet meet these parameters without notab...
I've looked around the forum but didn't find an answer to this particular question. In short, what food could realistically be produced in a space station assuming current (or near future) technolo...
Could a planet support both large mammalian megafauna and non-avian dinosaurs at the same time? My worry is that bigger mammals have progressively more trouble with dissipating body heat, whereas ...
I was on a beach recently and was contemplating what it would look like if Silicon just didn't bind oxygen very well/at all, perhaps similar to gold. I'm not sure if something else would take the ...
So the background is simple: in the modern day a CME (coronal mass ejection, a solar flare that has escaped the sun) hits the Earth and destroyed all the electrical equipment causing planes to cras...
Information and Context I'm working on a story, based 220 or so years in the future in a hard-science universe (where a quantum jump drive has been invented). I was wondering if anyone could giv...
I am trying to build a hard science-fiction world where the interstellar travel might work like this: Travellers bodies are scanned and all relevant information regarding body structure, neural c...
On a giant 50 mile high volcano, created and sustained by magic, there is extreme weather. Storms, high winds, snow, everything you'd find at the flanks of exceedingly high mountain. Explorers have...
As you know, Earth has active and moving techtonic plates known as the lithosphere. They float on the asthenosphere and slowly move about. Here's my question: Can a planet with a hot molten core h...
Decades in the future, people have been able to augment their own sensory inputs in their brains and nerves to feel, see, taste and touch things that are not really there. Also, they can modify the...
So in this world somewhere in distant future. The government has created I.D Chips that are designed to be biologically implanted into its own citizens. To ensure extra "security" and also act as a...
People have been trying to imagine elaborate alien biologically possible ecosystems for a while. A lot of people seem to both want but ignore one of those fundamental aspects of our own ecosystem, ...
I had this one idea of having the government create chips that monitor the thoughts of prison inmates as a way of preventing future crimes. At the same time still, give them a degree of freedom and...
Section 1: Non-Duplicate Proofs. Section 2: Background, THE QUESTION, and Useful Info. Section 3: Other cited ways of preventing. Section 4: Sources and Additional Resources. Section 5: TL;D...
In a near future setting I am working on, humans have built space-habitats and have established colonies on celestial objects such as Luna. Their spaceships cannot go faster-than-light and have the...
I recently watched this Kurzgesagt video exploring the question of what would happen if you had a black hole the size of a coin. To summarize the video: A black hole with the MASS of a coin wo...
The Setting I'm doing background work on a story involving a civilization about as advanced as ours materiologically. A significant part of their military operates along the continental shelf zone...
The situation: the good guys are attempting to infiltrate an enemy base, and cause mayhem either in person and/or by planting explosives and running away. They know there is a big dust storm on the...
How could the amount (total mass) of oxygen be increased on a planet like Earth (with a similar atmospheric composition), preferably by natural processes? For the sake of having a ballpark number...
I am currently trying to make a world that has casual interplanetary commutes with near future technology (within one century); so, to find a reasonable top speed for crafts in my interplanetary wo...
There is a group of people with about renaissance-level technology clearing out underground granite. They have no access to work animals. 700 men are working at any given time. Mining Using rena...
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...
Many questions on this site hypothesize about two planets in close orbit of each other, each developing their own civilizations. How feasible is that? Some 4.5 billion years ago Theia, a planetary...
Assume an Earth-like or super-Earth terrestrial planet in a state comparable to Precambrian or Archaen Earth. The atmosphere is mainly nitrogen and carbon dioxide, perhaps some methane, but very li...
So, I the question of what if a black hole hits the earth has been asked to death by various people, but what if the somewhat tamer wormhole hits the Earth? In particular, we'll say that one mouth...
