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This question is in the same context (the same world) proposed by Steven L. Gillett in his book: "World-building". And actually there have been some other questions about this same chlorinated worl...
When one hears the name "Beringia", we most often think the land bridge that formed as a result of a drop in sea levels during the Pleistocene, resulting in a connection between Alaska and Russia. ...
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...
Take a planet like Gliese 1214 B, which has no land, an ocean 100s of kilometres deep and a seabed of Ice VII. For the purposes of the question, let's assume that the pressure and/or temperature ne...
...kill every protohuman who tries to leave the African continent. This comment made me think about one question. Suppose you have robot guards, like futuristic lasers, who just shoot at any ...
I'm interested in the introduction of bacteria on Mars. If a small base were set up with attempts to maintain some sort of sterilisation protocols, but all the humans died on that base a) what woul...
Following the Schwarzschild metric, we could consider that a white hole=black hole with no angular momentum (no spin?) or electric charge. Would be enough to slow down a black hole and somehow remo...
There is a space ship, flying from planet to planet for multiple years. It is a science vessel, so, once they reach a planet, they do research. But what do they do if they are in transit between pl...
I'm designing a world with advanced life forms that use a sulphur-based biochemistry (see this link for context). I would like to create a carbon cycle analogous to Earth, where: Photosynthesis t...
A Snowball Earth is a global condition (which may have occurred many times) in which the temperature everywhere on the surface was, for extended periods (up to tens of millions of years), below th...
Set in the near future, robots and mankind coexist amicably due to the great technological advancement in robotics and artificial intelligence. They are everywhere and some took a human form. All o...
Terraforming and maintaining a biosphere suitable for humans is tough, but no worries, Protogon is here! Collaborating with Providence, our scientists have created Hygiea, a series of rapidly grow...
We Eldar are a beautiful race that have a maximum life span of 500 years. We are stronger, faster, more intelligent, sexier, and frankly just superior to you humans in every way. However, we cannot...
My planet is a 20% larger than the earth, assume a similar atmosphere, but it can be changed to fit the narrative. My ship is not so large as in the original question, a cylinder shape, about a mi...
Are there any kind of contaminants or other reasons that might be dangerous? I'd assume that as far as microbes/bacteria goes, eating off the ground on the moon is much safer than it would be on ea...
Airships are cool, and one of the only vehicles that benefits of the square cube law as it can carry more weight if it has more volume of lifting gas. This got me thinking about what other advantag...
Airships are cool, and I would love to use them and see them used outside of steampunk a lot more. One key aspect of Airships is that they seem to have the square cube law reversed. For other thing...
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 ...
I am curious if there is a way for a disease to negatively effect the intelligence of humans;reducing them to non-sapient ferals in the end. I am curious what such a disease would need to do to eff...
Trying to create a planet with sulphur dioxide (which is heavier than oxygen I think) on a lower level and oxygen above it. Is this possible? Need something that is horrible on the bottom and wan...
Set in the mid 22nd century AD, a major construction work is being carried out in the orbit of Uranus. The military is developing a cheaper fleets using precast reinforced concrete(PRC) hoping to e...
Assuming that there is a means of increasing the spin rate of an existing black hole, what would happen to the shape of the event horizon as the spin rate was increased? In extremis what would even...
Essentially, my question is, can one larger black hole be split into a system of smaller black holes? I'm assuming energy requirements will be prohibitive, and that it may not be possible without ...
The Orville has Mochlans, an (almost) all-male species. They reproduce in some unexplained method that produces a fertilized egg. The issue here is that if one of the mates lays an egg and the oth...
Suppose for whatever reason the sun's power has weakened. The Earth gets colder. All the water has frozen, and the temperature is getting to around the boiling point of oxygen. Can an "oxygen cyc...
