Questions tagged [aliens]

For questions about a different and uncharacteristic species or object that has come to the world from another world. NOT for questions about extraterrestrials in their native environment.

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2
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3answers
124 views

What are the chances of finding uranium-238 ores on other planets?

I was thinking about aliens and space colonization and what the probability is of uranium ores being found on other planets. Would they be common? rare? medium? who knows? the cosmic abundance of ...
3
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9answers
268 views

What could a weakness be for a gaseous species?

I am currently working on a space opera setting, and I wanted to include a gaseous species of sapient aliens that hail from a gas-giant reminiscent of Jupiter. Before I ask my question, I wanted to ...
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2answers
114 views

Can a creature have possible locomotion if the legs are positioned in a x formating to the pelvis or this symbol ><

My alien creatures are arthropods: multiple limbs, segmented bodies, etc. Is it possible for them to walk if their legs are placed in a x formation in thier pelvies or similar to the shape of this ...
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6answers
171 views

How to prove that the source of a signal is truely alien

A device is recovered from an impact site in the desert. This device contains bizarre, but not inconceivable, components and a simple interface. The interface is a black and white touch screen with a ...
5
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4answers
509 views

Eye size and pupil shape of an over 6ft tall ambush predator?

They're built in such a way that they can stalk and chase their prey on all fours like a feline can, and then easily return to digitigrade twoleggedness for everything else in their life (this is a ...
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1answer
85 views

Interstellar Evolution [closed]

Is it possible for a species/ecosystem to travel the stars? I'm curious what this would look like. How many generations would it take to adapt to a planets atmosphere and propel a seed colony carrying ...
3
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1answer
128 views

What would be different in the brain of a being that lives hundreds of years allowing it to have enough memory space?

So I’m trying to create a race of alien that lives for 600 years but I need them to have the memory space for all that time. The human brain can hold approximately 300 years worth of memory and that ...
7
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9answers
925 views

Can Advanced Matter-based Weapons Target Fast-moving Targets Deep in the Atmosphere Without Collateral Damage?

UFO's are real and fighting around the Earth! I have an alien spacecraft in modern Earth's atmosphere, and rival alien spacecraft in Earth's Orbit. Both aliens are capable of maneuvering at great ...
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2answers
78 views

How could society collapse after alien disclosure? [closed]

How would society handle an official disclosure that we are not the top predator on earth and there is something hunting/preying/eating us (as per latest UFO interviews) like an alien civilization, ...
2
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1answer
100 views

Is it possible to go from tree climbing to hiding in sand like some sandlions do

Is this evolutionary path possible with this creature because I don't know what would be in order to go from a creature that lives in the trees to living in a treeless environment. I had an idea that ...
0
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1answer
115 views

Can life be diverse if they had evolved from different or multiple ''basic'' body plans or multiple ancestors?

Okay, Okay so I know my fair share of convergent evolution, foster rule etc. now I'm wondering because I have three creatures (a insect like creature a herbivore and carnivore I'll send images they ...
3
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2answers
281 views

I need help with aquatic arthropods

How would an arthropod (invertebrate animals with an exoskeleton)replace and or evolve into a fish-like animal (using terrestrial fish as an example)the question is how would they recrate a ocean ...
0
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1answer
63 views

Could an alien learn human history from a time lapse of Earth?

If some alien or other organism placed a camera of some kind on the Moon’s surface and pointed it at Earth, and recorded video through all of human history, starting at the first evolution of Homo ...
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6answers
3k views

What circumstances would necessitate rib cage made of hexagons?

I ask this because I’ve been looking at alien designs for inspiration and on rare occasions found peculiar bone structures. The hexagonal rib cage in particular intrigues me. We know for one that ...
12
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5answers
3k views

How to populate an empty small town?

My work in progress involves a small town which has been set up in an isolated part of the United States. The backstory is that some very advanced aliens want to set up an observatory on Earth, to ...
6
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2answers
114 views

Explaining Alien Monsters: Gargoyles

Re: New ALF (Alien Life-Form) discovered A new and dangerous ALF has been discovered in one of the generation ships. This creature has been christened a Gargoyle, as its body resembles a rock and its ...
23
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7answers
2k views

First Contact @ Home: How to ethically raise aliens when very little is known about their species and contact is impossible?

We failed to establish communication with the aliens. Our scientists have lost hope in reverse-engineering their technology - what little we can even recognize as technology. The only commonality, it ...
6
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3answers
639 views

Could alien microorganisms "infect" our own microbiome clouds and then "pollinate" us?

I'm trying to make my idea make sense. I wanted to create an parasitic/symbiotic alien species which reproduces/breeds by air or touch, which they are unaware of. They do not understand why their ...
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1answer
179 views

Can a symbiotic alien species reproduce like a virus through pollinated microscopic microbiomes clouds?

Working on a story of an alien body-snatcher invasion type of story. Basically this is a parasitic symbiotic species that evolved to reproduce through their own microbiome cloud by air and touch. ...
5
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2answers
316 views

Could medieval people build an airtight spaceship or space ark using their common resources?

This is set on a fictional alien world with medieval people. However, this world has alien livestock that are capable of flying into outer space and traveling to other worlds. These medieval-age ...
5
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5answers
185 views

What could newborn alien offspring need to consume instead of breastmilk?

My intelligent alien species doesn't have nipples at all, nor belly-buttons. I was gonna have it that their babies are very small when born (nearly marsupial-esque, but without natural pouches in the ...
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2answers
118 views

Coexisting with a sapient swarm intelligence

My story involves a sapient swarm intelligence, which I've detailed in a previous question here. I'd like to ask an additional question that is related but different from my original post: Is it ...
4
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1answer
72 views

Mental characteristics of a sapient swarm intelligence

My story involves a sapient swarm intelligence, which I've detailed in a previous question here. I'd like to ask an additional couple questions that are related but different from my original post: ...
6
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3answers
121 views

Interacting with a sapient swarm intelligence

I'd like to use a story with a sapient swarm intelligence because I find the idea interesting, but I'm having trouble developing some of the finer details of how this intelligence would interact with ...
5
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1answer
101 views

How many habitable planets could our radio signals reach?

Taking into account signal attenuation. If there was anyone there to hear them. Only considering those signals already produced by us on Earth. Assuming the technology we have right now is available ...
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4answers
172 views

Realistic reverse aging?

More than a few times in fiction they've had a sentient species age in reverse, as in the children look like adults and the adults like little children. My question is how could this trait be ...
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2answers
103 views

Could an organism exist in a vacuum just by temporarily “shutting off” and storing heat?

I’ve heard repeatedly that life in deep space is incredibly unrealistic, but I’ve had a (certainly scientifically stretched) idea for a race of ant-like creatures who live deep under the lunar surface ...
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11answers
1k views

Why would Earth become an Entertainment powerhouse? [closed]

The time setting of this world can be from near 2000 to present day, to near future. But basically, Aliens from around the galaxy are visiting Earth...for our TV series/movies, animes-manga, and ...
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1answer
59 views

Hycean world life questions

https://www.space.com/amp/new-class-habitable-exoplanets-hycean-worlds Hycean worlds are planets 2.5 the size of Earth with huge oceans and lots of hydrogen in their atmosphere. They're probably ...
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9answers
2k views

Reasons an alien would need protective eyewear

On their homeworld, they can see "normally" but when traveling off world they need to wear protective eyewear (but not full body protection.) I was thinking some kind of light sensitivity, ...
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1answer
171 views

How would the phonetics of a snake be?

I am trying to create my first alien language, I am creating an alien race that is like a two-legged reptile, has a head similar to snakes, has something similar to feathers (mostly on the head) and ...
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1answer
48 views

Rimerunner discussion [closed]

https://speculativeevolution.fandom.com/wiki/Rimerunner One of the weirdest creatures of Darwin IV in the book Expedition is the Rimerunner. This rare resident of the tundra regions hops along on one ...
3
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1answer
167 views

Planetary tilting bad?

https://phys.org/news/2021-07-goldilocks-planets-tilt-complex-life.amp This article says (rather poorly) that only a relatively small axial tilt of a planet like with the Earth could be beneficial to ...
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1answer
71 views

Life in a Neptune atmosphere?

https://phys.org/news/2021-06-life-atmosphere-sub-neptune-planet.html This article suggests that if extremaphiles were transported by meteorite to a neptune-like planet they might be able to establish ...
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1answer
179 views

Math on another planet [closed]

Mathematicians constantly create new axiom systems, and there are different concepts of information. My view is that mathematics gets where I am because mathematicians invented notations to write down ...
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4answers
215 views

Could an intelligent alien species reproduce via pollen?

Could a sapient, animal-like alien reproduce with pollen and ovules, rather than directly producing sperm and eggs?
2
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1answer
137 views

How could sequential mandibles evolve? [closed]

How could an alien creature evolve with a set of multiple mandibles attached to a single maxilla? The mandibles would have different types of teeth, and all jaws would be planar, with some teeth ...
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14answers
6k views

What kind of Alien artifacts or minerals could advance the human race?

Let me explain what I mean. Let's say an Alien civilization left a lot of devices on a planet or moon (in our solar system or wherever). They had a colony, want/wanted to Terraform (or "Xenoform&...
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10answers
2k views

Could a culture have free-market capitalism without corporations? [closed]

Could a culture have free-market capitalism that never (or at least rarely ever) results in corporations, large trusts, or other such groups? This culture is made up of a single alien species that ...
5
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3answers
236 views

How to kill people with blaster weapons

Recently, the R&D team found an exiting, yet unfortunately nonlethal weapon; Blaster technology. Blaster technology fires a projectile that moves at the speed of light, strikes the target, and ...
3
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2answers
228 views

How plausible is a two-way crab?

The two-way crab is an intelligent alien with a strange form: It is biradially symetric, with multiple legs at the sides, 2 arms beside each face, and two faces at opposite ends of the body. It has no ...
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5answers
196 views

A representative government in a world with rigid social castes [closed]

Globally, on this planet that's been around much longer than Earth has, with people who've been around much longer than humans have, there are four castes -- labor, military/law enforcement, science ...
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2answers
93 views

How would radially symmetric, saltatorial monopedal creatures plan out underground towns for movement?

These creatures are radially symmetric, saltatorial monopeds. They manipulate items using a ring of tentacles around the mouth at the top of the body. They are 2m tall, and can jump 2m high and 5m ...
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2answers
184 views

Single-sex species that has specific culture roles for different body types? [closed]

Basically what the title question says. I want there to at least be three socially constructed genders, each with their own expectations of how they should act and dress. I want the species to have a ...
5
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3answers
195 views

Could an animal have an iris that changes its opacity?

Irides are muscular structures that can expand and contract to change the amount of light entering the eye. But, could this structure be replaced by a non-muscular structure containing pigment cells ...
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0answers
80 views

Would this chela-hand work?

The chela-hand is a type of limb, which is like a chela, except that the moveable finger has multiple sub-fingers, and is more like a hand. The creature that has the chela-hand was originally an ...
5
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5answers
227 views

Sex determination that would explain the complex reproductive system of my aliens?

Phemogian are a seven-sexed species that passes gametes in a chain. Each sex can inseminate one other sex and be inseminated by another sex. Each phemogian has three parents, with the last parent in ...
6
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1answer
126 views

Why would these creatures have an orthograde posture?

The creature is an alien resembling a reptile. It is around 1m tall. It has scales and a tetrapod-like skeleton, but lacks a tail. It breathes through paired siphons in its neck. It has no nostrils or ...
2
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2answers
261 views

How plausible are inverted humanoids?

How plausible is an upright, humanoid creature that is inverted, with the head at the bottom and the posterior region at the top? This creature could have evolved from a typical biped that evolved ...
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2answers
139 views

Civilization's level of intellectual development, we and aliens

I believe that all of you should know the Kardashev scale. The method that the Russian scientist created gave us a practical way - a marker, which allows us to assess the technological level of ...

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