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A really simple question - if you built a space elevator then you continue building past the geostationary point to put tension onto the tether. Now if you keep building out further and further the...
This question asked about aliens launching meteors at major metropolitan areas on Earth, but explicitly excluded the accuracy of the meteors from the question. In this specific scenario aliens ...
So this was done in Starship Troopers and I am curious if it is realistic for interplanetary warfare. The idea is that aliens launch meteors at major metropolitan areas...and it ends poorly for th...
In the near future, drones replace military fighter jets that require human pilots. These drones will be travelling at many times the speed of sound. Highly sophisticated drones will be able to eva...
Many fantasy stories involve large spiders like in Harry Potter. These creatures behave almost exactly like normal spiders despite their size. My question is: can large spiders still walk upside d...
Note: I am aware of a previous question Physiological effects of living on a world close to a black hole As I understand it, that question refers specifically to a planet that is in a non-ideal ...
Based on this question and answer about a human sized creature that lives completely on textiles, how feasible is it for a creature to consume nylon and polyester to derive fats/lipids useful for b...
This question prompts me to evaluate the possibility that the romans or greeks could be blown in a storm to the Americas and survive if they had enough water provisions? Or maybe not provisions bu...
This is the first question in a series on the physical limits of the human body. The intent of this series is to, illustrate the upper and lower limits of human biology for the purpose of buil...
All the worlds I've seen built by me or others have surfaces that are mainly water. Is it possible for a habitable world to exist if the world is mainly land? I'm only talking about 55-65 percent l...
Is there a way to create a nuclear explosion that only destroys things within a few feet of the bomb? The point is to completely eradicate something relatively small, leaving no trace. Let's assum...
I have a fictional map for an Earth-like planet, with Renaissance-era humanoid populations. Also, Luna, that is, the exact same moon that we had, pre-Space-Race, is orbiting the planet. My map jus...
Inspired by this question, and my own answer to it: Avoiding galactic pandemics. World ending pandemics are a common disaster/after-the-end story trope, I'm trying to determine if plausible, and h...
Setting: we have a fantasy world which is a planet with much of the same conditions that can be seen on Earth, but with the difference that it is orbited by a moon with a mean diameter of 3 500 km....
Variations of this question have been asked and answered previously but I am looking for something specific. Situation: Earth's body (mantel and crust) rotate at different rates than it's core (I ...
Let's say that an advanced civilisation once existed on Mars millions of years ago at a time when water existed in liquid form and that life was abundant on the planet. (Say this civilisation is a ...
Would a spoked, rotating torus work as a method of colonizing space? If so, how feasible would it be? As in, what would be the cost, where would we get the materials for it, how fast does it have t...
I am working on a 2D platformer game, and I'm trying to introduce a jetpack which would give a shinespark-like ability from Metroid series, i.e. it needs a run-up to a certain speed, at which the e...
The Technology We're in the year 2250 on an Earth-like planet. All the space on the earth's surface has been used up by the population of 15 billion, so we're moving into the air. Cities, along wi...
