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In many science fiction stories, crystals where used by ancient alien civilisations to store information that could last millions of years. For example, in Stargate, "control crystals" that looke...
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....
It is some small number of years into the future. We are regularly using beamed energy, as defined in this answer: large arrays of microwave transmitters. We have developed this so that these array...
If the ozone layer of planet Earth was completely depleted (to near-zero concentrations), what would the average summer UV-index rise to in New York City? If relevant, other changes anticipated ar...
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...
Suppose there was a ternary system where the stars are effectively identical in mass, luminosity, radius, etc. These three stars circle a central point rather than two orbiting a larger third. At t...
A good summary of the Zerg race is given on wikipedia as follows: The Zerg are a collective consciousness of a variety of different races assimilated into the Zerg genome. The Zerg were origina...
What single chemical element (get out your periodic tables) could most efficiently destroy all life on the planet. Restrictions: Natural elements only, and no anti-matter...nice try. Looking for...
The Sun has nowhere near enough mass to enter the branch of stellar evolution that would lead to a supernova, fortunately for us. However, there are planets that orbit stars that are destined to go...
Nowdays we have biometric doors that can scan your eye, palm, fingerprint, ear, etc, etc... But all of them rely on electronic readers and computers to match the sample against the stored pattern....
Apologies for taking a while to respond to this. When I used the phrase "hasn't been discussed", I was talking about the meta discussion at hand, rather than prior discussions. I rejected the edit,...
I don't see a Facebook page link. Any other social media. Simply having a presence there will give some people more trust. Occasionally making a post when a new forum or feature is enabled would...
Two ideas, prompted by a question I submitted recently. (About the chemistry of PVA glue.) Firstly, the topics are too narrow and exclude many, quite possibility the majority, of likely questions....
Since voting on this discussion is currently unclear, I'm separating out each proposal from the question for voting, each in its own answer: Proposal 2 Posts that were imported, claimed, and no...
Since voting on this discussion is currently unclear, I'm separating out each proposal from the question for voting, each in its own answer: Proposal 3 Posts that were imported, claimed, not ed...
First, moving questions rewards people for asking in the wrong place. That's not something that should be encouraged. Second, that's not a great question because it requires following links to ge...
but you could still ask questions about how FTL could be achieved with what we know of physics That's not scientific at all, according to what we know of physics, it's not possible. End of lin...
There is this fantasy in fiction that humans meet another species and figure out that it's intelligent. This usually happens with dragons, dolphins, aliens, collectively intelligent plancton... Bu...
The question: What characteristics are necessary for a planet to be habitable for humans? What should the generic star and planet be like? The life forms are human, so they Need to have access ...
Previously on the same setting (: How close is too close for a human habitation to be near an erupting volcano? What factors could delay the rescue of a small group of survivors on a Pacific volc...
I am trying to understand the physics of an interstellar race. Say two ships are racing past a black hole as if it were a corner on a race track. One of the ships takes a hard line and comes very ...
I'm looking for various factors; Atmosphere Composition, Type of Sun, etc, whatever would work. That is, of course, if this is even likely/possible. I believe that yellow is generally not an ideal ...
A key part of the plot in a story I'm working on revolves around the main region being on top of volcano that is set to erupt. The trouble is that the region in question in my setting is roughly th...
Holograms are a real thing. But what science-fiction TV shows and movies call holograms are something different entirely. From a classical geometric optics standpoint, in order to create the illu...
In the red corner, a top of the line Main Battle Tank, you can have your pick, but let's say a tricked out M-1A2 'Abrams' with a full Nuclear-Bio-Chem Protection kit. In the blue corner, a Nuclea...
