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In a world I'm currently building, I've devised a magical creature that sustains, indefinitely, a Class O hypergiant star. This, of course, violates conservation of mass and conservation of energy....
How do you go about boosting an already-habitable planet's habitability? I want to maximize biomass, hopefully cover the whole planet surface in luxuriant jungles and forests, brimming with insects...
Say a technological advanced civilization wants to create an Earth-like planet using materials from the Oort cloud. Could they really be able to create a habitable world resembling Earth using ju...
Can there be a different kind of mathematics with different sets of rules? That is without inference and axioms. One attempt might be Stephen Wolfram's "New Kind of Science", but I am not sure that...
Follow-up-question to this scenario: ~ 2750 A.D : Quite a few asteroids/celestial bodies have been move to a stable earth orbit and are beeing mined for ressources. I am currently designing the eco...
The International Space Station(ISS) is by far the most expensive man-made object money can buy and yet we cast it into space, set in near future government threatens to pull out funding for ISS an...
I'm looking for a way to render a large percentage (30 to 50%) of Earth's human population infertile in about 10 years. Medicine and tech levels are approximately where they are now, maybe slightl...
I could have sworn that there was a question that covered this, but I suppose I'm misremembering. If anyone finds one, let me know. Back in the early days of the Solar System, things were pretty b...
It is difficult to find statistics for the ratio of Lego men and women in the general population but from a non-scientific survey, I get the impression that Lego men vastly outnumber Lego women. Ye...
You're in a group of colonists, headed to your new home on Tau Ceti e. Due to some crazy accidents aboard the ship, the diverse flora that was brought aboard (for food during the journey and for ag...
The city - a modern, sterile 'utopia' (with the undercurrents of government control and suppression, of course), that can be current tech, or future tech so long as the day-to-day lives are in curr...
Imagine a species almost identical to humans, with one exception. All sperm contained both X and Y chromosome, and every child has the potential to develop as either sex. However, the mother has ...
Imagine a species that evolved almost identical to our own, except for one difference. A child's sex is not decided by the presence of a Y chromosome, and all embryos have the potential to evolve ...
Continuing my line of thought from here: Could you cool the earth's mantle and then bore into it? You cannot bore into the mantle by cooling it as you go because the pressure would crush your littl...
Darmstadt, Germany, current day: All ESA members meet on super secret meeting. They had it enough with NASA and want to claim their first place in space. How do they want to do it? Landing manned m...
Consider the present day Earth. Now, through some event (magic, a giant maid with a vacuum cleaner, a disgruntled alien did it, ...), our planet is stripped of its atmosphere. Assume that this happ...
Modern human mothers can now choose the sex of their children, without surgery or procedures. For every pregnancy, the sex of the fetus must be chosen. In a culture that has a strong preference for...
Imagine a world like ours. Gravity, atmosphere, sky... just nothing solid down there. At least not anywhere close. Would it be possible? I know this is similar to this question. So to specify what...
This is partially a followup to my question on ancestral guidance. Suppose you have a species, or a subset of a species, that has a particularly interesting mechanic, like the above mentioned ance...
NASA's Project Orion created the concept of a spacecraft that detonated nuclear bombs behind it, and rid the shockwaves as a form of propulsion, but the project was abandoned because nuclear bombs ...
Set in the year 2015 A.D. Every morning when you wake up from bed and look outside the window, you notice that the sky seems getting darker every day. We were told by the authority that there's no...
I can imagine our own civilisation becoming autotrophic eventually, if biological life gives way to a population of machines that need only sunlight. However, the history of that situation still in...
The internal structure of the Moon is different from that of the Earth. There are neither volcanos nor many moonquakes. Using early 21st century technology, could we dig a vertical mine shaft all t...
There is a more strict version of Prime Directive on a subspace traveling Empire. This empire (without the morale codex of the star trek crew, maybe more like Avatar) would like to get the resource...
A different form and function of a Dyson sphere. It is fairly far in the future and the residents of a D-type spherical asteroid (similar in size to Deimos, ~6km radius). They've been living in ha...
