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Could animal produce less than 700MHz radio waves to communicate ? I don't want those waves interfere with mobile phones and other intercontinental radio communication my space colonists would use....
A rotating object, especially something as large as a planet or a star, has kinetic energy. However, my question is how would you go about harvesting the energy the object has from rotation to go t...
Obize is an Eden-like moon orbiting the barren terrestrial planet Akaria. This planetary system is special in the fact that the two worlds are complete contrasts to each other. The moon has plentif...
Would it be possible to have a disease that only affected people in a certain age group, more specifically, teenagers? And what would the virus be targeting?
I am envisioning a very big planet that at the equator Is mostly composed of gases. Further away from the equator a crusts forms of matter - rocks that then also contains an ocean. I am still imagi...
While similar to other questions they mostly focused on what impacts required in the past to keep airships as a popular air transport method today, this question is about how to make airships the d...
How large could a solid planet be (in theory) without becoming a star or black hole? Too much in the way of light elements would lead to thermonuclear ignition, but too many heavy elements would ev...
This scenario is based on the kea, the world's only alpine parrot. Even though it eats plants like other parrots, it also eats meat, and therefore could be New Zealand's answer to the smaller d...
Background A colony of humans has settled on a remote planet where there is little to no sunlight, but there is a plentiful amount of earth metals. E.g.- Iron, aluminium, Titanium, etc. There are ...
Some Context I'm creating a universe where humanity has reached the stars. They've colonized a few star systems and, obviously, FTL drives are a common thing. They basically jump you to another lo...
My planet is tidally locked to its sun. It has a slightly thicker atmosphere than Earth. Over the planet's sun-side surface, there would be no wind because that area is in the middle of a big cyclo...
I'm designing an alien plant soecies that has evolved to produce electric shocks, as a way to keep insects away from it. My question is, how would it produce electricity in the first place? Also, c...
Imagine a planet, 3/4 water and 1/4 landmass. No axis tilt so the climate is moderate throughout the year. IE peak temperatures at 100°F at equator. It orbits a sun about the size of ours and h...
Premise This is a world in which humans are blissfully unaware of their own vulnerability. Needless to say, there are many vulnerabilities to address, however, this question deals only with the vu...
My Calisota, which is located in the north of what we know as California and largely resembles the universe seen in German-language Disney comics (Lustiges Taschenbuch), except for the absence of a...
First question: Would this simplex ternary system be stable? If that question turns out to be yes, how would an organism based on carbon tetrachloride use the energy types below to provide enough ...
Beneath the sands of the Planet Dalia, their lives an abominable creature, a creature that eats beings whole and slowly, slowly digests them for years at a time. This creature is...The Tayan. Wor...
If there were a planet similar to earth where the lines of latitude and longitude were half as far apart (about 35 miles instead of about 70), but the planet's density were increased to compensate ...
How tall could a bamboo-like (i.e hollow with nodes) tree be ? It should be at very least 1.5m of diameter and walls no more than 20cm thick. The internodes should be 2 to 5 meter long. I think it ...
I am building a country in today's Argentina (32°-40° latitude) where Europeans would have settled in 10th century. Would their skin color change over that period?
I just want big cat eyes (i.e., lions, tigers, etc.) in a humanoid that can be just as expressive as a human's yet not having our very conspicuous eye-whites. Doable, yes or no?
So, I've been designing an alien species, actually a redesign of something from childhood. However, I've recently come into an issue with its limbs. The creature possesses two arms. The right arm ...
So, utility fogs have been around for quite a while in my world, mainly to patch up whatever holes I had in my magic system: If the Fireball really is just an M67 nade, then what propels it 122 m...
In the near future we may find cargo ships fleeing space pirates! Given that... It's a small cargo ship carrying 10 metric tons of wheat (cargo volume, approximately 13 m3). Total volume: 100 m...
A few days ago, I saw this very nice reconstruction of a Machairodus giganteus by Peter Hutzler: More recently, I've been thinking about it, and I'm wondering A) if it would evolve without getti...
