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Q&A How long does a derelict spaceship last in orbit?

This is the premise: the occupants of a spaceship die hundreds of millions of years in the past orbiting above a Earth-sized planet. It has a supercomputer that allows the ship to still fire its ro...

1 answer  ·  posted 6y ago by Pyrania‭  ·  last activity 6y ago by Pyrania‭

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Q&A Anatomically correct radio communication

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....

4 answers  ·  posted 6y ago by Jean-Abdel‭  ·  last activity 6y ago by Jean-Abdel‭

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Q&A How would I gain energy from a rotating planet?

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...

5 answers  ·  posted 6y ago by System‭  ·  last activity 6y ago by System‭

Question energy
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Q&A An Eden-like moon orbits a barren terrestrial planet. Why is the planet barren while its moon is earthlike?

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...

13 answers  ·  posted 6y ago by Noble‭  ·  last activity 6y ago by Noble‭

Question planets
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Q&A Disease that targets only teenagers

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?

5 answers  ·  posted 6y ago by NewberyBlueberry‭  ·  last activity 6y ago by NewberyBlueberry‭

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Q&A Half gas half rocky planet

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...

3 answers  ·  posted 6y ago by A Vic‭  ·  last activity 6y ago by A Vic‭

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Q&A Making airships\blimps\dirigibles the dominant form of air transport

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...

11 answers  ·  posted 6y ago by cypher‭  ·  last activity 5y ago by cypher‭

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Q&A Largest artificial planet

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...

3 answers  ·  posted 6y ago by Slarty‭  ·  last activity 6y ago by Slarty‭

Question space planets gravity
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Q&A A Raptorial Parrot

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...

2 answers  ·  posted 6y ago by JohnWDailey‭  ·  last activity 6y ago by JohnWDailey‭

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Q&A Can I have wind turbines on my base?

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 ...

4 answers  ·  posted 6y ago by Boolean‭  ·  last activity 6y ago by Boolean‭

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Q&A How can I locate myself in a random point of space?

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...

3 answers  ·  posted 6y ago by Magus‭  ·  last activity 6y ago by Magus‭

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Q&A Is the concept of my flying carpet possible?

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...

2 answers  ·  posted 6y ago by Nihonium2‭  ·  last activity 6y ago by Nihonium2‭

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Q&A What would it take for a plant to produce electric shocks?

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...

3 answers  ·  posted 6y ago by John Michailidis‭  ·  last activity 6y ago by John Michailidis‭

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Q&A What circumference would a no season temperate climate planet have

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...

1 answer  ·  posted 6y ago by Clay Deitas‭  ·  last activity 6y ago by Clay Deitas‭

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Q&A Malign Science: Counter argument for KT boundary

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...

12 answers  ·  posted 6y ago by Arash Howaida‭  ·  last activity 5y ago by Arash Howaida‭

Question geology
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Q&A The language of Duckburg: Calisota German

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...

2 answers  ·  posted 6y ago by MedwedianPresident‭  ·  last activity 6y ago by MedwedianPresident‭

Question geography language
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Q&A Would these metabolisms be realistic for this ternary system?

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 ...

1 answer  ·  posted 6y ago by Pyrania‭  ·  last activity 6y ago by Pyrania‭

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Q&A How can my Tayan creature excrete waste, whilst buried underground?

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...

6 answers  ·  posted 6y ago by DT Cooper‭  ·  last activity 6y ago by DT Cooper‭

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Q&A Earth-like planet which is smaller but has the same gravity

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 ...

2 answers  ·  posted 6y ago by curious2220‭  ·  last activity 6y ago by curious2220‭

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Q&A How tall could bamboo grow

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 ...

1 answer  ·  posted 6y ago by Jean-Abdel‭  ·  last activity 6y ago by Jean-Abdel‭

Question flora
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Q&A How would the skin color of white Europeans change over 1,000 years in subtropics?

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?

7 answers  ·  posted 6y ago by Martin L‭  ·  last activity 5y ago by Martin L‭

Question humans health
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Q&A Can the cooperative eye hypothesis still exist in eyes with no sclerae?

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?

1 answer  ·  posted 6y ago by CA Pichowsky‭  ·  last activity 6y ago by CA Pichowsky‭

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Q&A Asymmetrical Limbs

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 ...

3 answers  ·  posted 6y ago by N Francis‭  ·  last activity 6y ago by N Francis‭

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Q&A What would limit the magnitude of force a utility fog (aerosol swarm of tiny bots) can generate?

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...

2 answers  ·  posted 6y ago by Mephistopheles‭  ·  last activity 6y ago by Mephistopheles‭

Question robots
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Q&A Could an astronaut in a near-future space ship survive transit through our asteroid belt?

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...

7 answers  ·  posted 6y ago by JBH‭  ·  last activity 6y ago by JBH‭