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I am considering a world with a very long light/dark cycle. However, I would like some natural method of measuring out a "day-like" period of time. Could an object with an orbital period of aroun...
I am thinking on a small group in the current Humanity, having only around 2-300 members. They have the most important positions in the world politics (i.e. politicians, media holding owners, key d...
As we see today the interconnection between the brain and computing is becoming thinner day by day, we could imagine a future that where we could install additional artificial neurons. In a world ...
For my story to work, my characters have to stumble across a small wormhole that actually exists on Earth and is responsible for multiple disappearances throughout history. It connects a point on E...
Basically, it starts as a variation on the seahorse, once the ova are fertilized within the mother the embryoes are drawn back into the father who then carries them to term (there's actually a seco...
This concept is relatively simple. There are many animals which start mobile, but become sessile later in their life history, all of which are simple and primitive. And I was wondering this: what i...
I want to create an alien life for a planet which is at about 6"“8 Earth masses. It has a thick atmosphere made of hydrogen, helium, methane and nitrogen. I want that life to evolve slowly and be q...
I have a planet with homogeneous core and mantle, but a thick crust separated in two parts: the north half is composed of water and the south part is an alloy of heavy metals, making the north ligh...
The Wikipedia article on Klemperer Rosettes states that hexagonal rosettes are slightly more stable than other, non-hexagonal rosettes, due to the position of the orbital objects in the Lagrange po...
It is simply a matter of time before human colonized our natural satellite and the red planet, so how to lay roads that is similar to ours on lunar and Martian soil? (For now suppose we are plannin...
My moon is the basis for a fantasy setting, but I just can't bring myself to abandon science and say "a wizard did it." I want to make the months and seasons realistic, and I want to find a way to ...
So the premise goes: A previously-traversable wormhole evolves into a black hole because (x) happens. What's (x)? What would it take for this to occur? Either naturally (a cosmic occurrence), by ...
Pretty much what it says in the question title. Suppose a non-human, social species of Earth animal found itself on an evolutionary path that favored increased intelligence of a kind not completel...
I am an awesome, famous, self-made billionaire - I started with a mere \$300 million and amassed that into over $4 billion in only 40 years (an amazing 6.75% return). Everyone loves me - the black...
The idea is simple, our intellegence is so far above a chimp or bonobo as to make us something different. There are things we can do intuitively that no Bonobo or chimp will be able to, and becaus...
From my understanding of animals, lifespan is all based on the speed of its metabolic rate. As endothermic animals, mammals live a high-octane life - growing up fast, being quick on activity regard...
On Earth, we use taxonomy to organize biological organisms into an identifiable hierarchy in which organisms that are evolutionarily related are placed in close proximity. This evolutionary approac...
There is a really obvious problem with going to a planet we have deemed "habitable". Even if the temperature is perfect, the air composition is perfect and the terrain is perfect we still have the ...
Would a human being be able to run faster, jump high, etc. if the gravity on Earth weakened? I'm assuming a weaker gravitational pull would cause the muscle to deteriorate because the body no longe...
Can a planet possess more than one ozone layer? Can multiple ozone layers cause more harm? If one ozone layer had a hole, would the other(s) act like a backup shield to harmful rays from a star? As...
Humans have been domesticating carnivores for over 10 000 years. And there are certainly carnivores big enough to ride. The former is the biggest feline ever to exist. They certainly can carry a hu...
Assuming such a stellar body is even possible, could human or animal life (also assuming they have a way to avoid being pulled toward the planet's core) breathe its outer atmosphere? Would such lif...
In 1950 physicist Enrico Fermi wondered why we have found no alien civilizations even though there are about 10,000,000,000,000,000,000,000 stars in the observable universe. Among other things, h...
When creating humanoid races or species or just normal individuals, I sometimes want to describe a certain body measure and thus have to estimate a reasonable value. How do you do that? Are there a...
Island planets are common in science-fiction, and we've even got a few questions about them in worldbuilding. However, I cannot help but wonder how, or if, they could form. On Earth, at least, our ...
