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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Anatomically Correct Rull? [closed]

An alien species (of name and provenance that shall remain unmentioned) have an exotic metabolism. They are apparently equally comfortable in atmospheres of oxygen, chlorine, or fluorine, and are ...
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1 vote
0 answers
64 views

How Would Human Society's Outlook Change if an Alien Type III Civilization Had Been Discovered? [closed]

The Kardashev scale divides civilizations into four types (0-3) based on energy consumption. No type II civilization has been discovered in our galaxy and no type III civilization has been detected in ...
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-5 votes
5 answers
317 views

Could space aliens be racist?

Racism, while it is widespread now, is a relatively recent invention, of which Earth's history suggests it requires certain conditions to emerge and take root. These conditions are certainly not going ...
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5 votes
7 answers
240 views

Anatomically Correct Insect From Shaggai

For those unfamiliar with the Lovecraftian-inspired story, the Insects from Shaggai, aka Shans, are insectoid, sentient creatures with 12 limbs that can 'phase' into another organism's brain and begin ...
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5 votes
3 answers
149 views

Blue star adaptation

If life did evolve on a planet around a blue star, what sort of adaptation could be expected? I so far have the autotrophs being yellow/orange or blue to absorb the light. I also thought the animal ...
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1 vote
2 answers
71 views

Blue star vision

For sake of argument, let's assume life did evolve on an earth like planet around a blue star. I have this idea that the animal equivalent life wouldn't have color vision so to let in less of the ...
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5 votes
3 answers
156 views

What evidence could reveal to aliens that their sun is the result of a binary star merger?

The answer to a previous question suggested life could have the time to begin and evolve on a planet orbiting a blue star if it was at first a binary pair that merged. The technical term is a blue ...
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  • 2,640
1 vote
2 answers
87 views

Would a carbon-based lifeform be able to emerge and live in Venus-like conditions?

I'm trying to make carbon-based alien lifeforms which live in a Venus-like world, where: The temperature is $\pu{650-750 K}$ and the pressure is $\pu{0.9-1.1 MPa}$ Sulfuric acid is abundant Because ...
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2 votes
4 answers
125 views

Why would a bio-mechanical Dyson sphere need to abduct and subsume an entire sentient species every 30-to-50 years?

THE SPHERE Up in space, there is this massive Dyson sphere, with a radius only slightly smaller than the earth's moon. It's made up of a creepy fusion of organic matter and mechanical machinery and is ...
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  • 1,177
9 votes
8 answers
3k views

Life underneath a blue star

Blue stars are notorious for burning too bright and living too briefly for life to develop around them. But is there some way that life could survive long enough to reach the sentience stage? I'm ...
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  • 2,640
8 votes
5 answers
206 views

How would cephalopod-like aliens design firearms

(BTW this is my first question, sorry if this is bad.) So basically, in my world there is a race of octopus-like aliens who use handheld firearms, now the question is how would they design them. Now ...
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13 votes
6 answers
729 views

Integrating Earth into interstellar empire [closed]

First Contact In 2020s an alien starship visited Earth. First contact was peaceful - with intial contact made from orbit, humans started learning the alien language and the aliens - let's call them ...
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  • 1,586
4 votes
2 answers
202 views

What year would technology be advanced enough to spot advanced aliens a dozen light years away from us

I'm planning to write a story and I was wondering if it would be possible to find aliens of interplanetary levels of technology at most a dozen light years away. I know that the first exoplanet was ...
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4 votes
6 answers
225 views

Psychological Consequences of a Symbiotic Relationship with a Sentient Symbiont that was supposed to be Consensual, but was not?

PREMISE: A sentient race of neural parasites is in a civil war between the Symbiotes, who've used their extensive knowledge of genetic engineering to alter themselves into symbiotes, and the Parasites ...
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  • 1,177
7 votes
2 answers
84 views

Realistic Intake Food Required To Maintain Healing Factor

So, to start out with. I've got a character with an alien biology and has an accelerated healing factor. Nowhere near the likes of Wolverine, or Deadpool but better than a regular Humans and allows ...
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4 votes
4 answers
445 views

Reality Check: Are these aliens feasible?

I'm working on a Space Opera novel featuring a group of aliens that call themselves Species 0001. Here's what you need to know about them: They are a species of squid-like aliens that evolved on a ...
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  • 1,177
14 votes
2 answers
985 views

Feasibility of an "albino" in a species that has color-changing capabilities?

I have an alien I am designing and I want there to be an individual to be a play off of my main character (who is albino.) The aliens are, unknown to the human settlers, an enigmatically intelligent ...
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3 votes
2 answers
179 views

Metabolic cost of changing the chirality of amino acids and sugars

The aliens in my story have biochemistry that uses amino acids and sugars with chirality opposite to that of terrestrial life. The aliens also have nanites that are capable of changing the chirality ...
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-2 votes
1 answer
80 views

What is the process of building a world [closed]

Is there a pattern that can be identified that we could use to build worlds? Is there something currently being used in certain circles?
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3 votes
3 answers
161 views

Plausibility check : an habitable exomoon

Is this moon plausible this moon is a little bit smaller than our moon it has thick atmosphere. so much so that floating algae thrive in the wind. the moon is not too close to its planet nor it's ...
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  • 1,684
2 votes
2 answers
134 views

How colorful would plants and animals in a habitable planet orbiting a F main sequence star would be?

F main sequence stars are hotter and brighter than the Sun and therefore they emit more UV radiation than sun-like stars. Many scientists think that complex life could develop in planets orbiting such ...
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3 votes
2 answers
193 views

How destructive would a antimatter bomb be?

I already know that antimatter is a destructive thing. But how destructive is it? I want in my far future human reality there be a mass produced bomb using antimatter that makes sure aliens know to ...
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5 votes
3 answers
180 views

Are there animals that can choose a caste/role/ability?

Just had cool dream, mostly a nightmare that woke me up multiple times on a loop during the night, but it was so cool I forced myself to back to the same nightmare after falling a sleep again. The ...
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10 votes
16 answers
5k views

Why would most species avoid democracy?

In my world, there are humans (often called Earthlings) and eight alien species. Humans have an Earth government best described as a democratic quinquevirate: to be exact, this is an elective semi-...
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-5 votes
2 answers
127 views

How could people handle arachnophobia in a world where spiders have the size of pets? [closed]

I am thinking about an alien planet where most species of spiders are the size of cats and dogs and the biggest of the most rare species are the size of a car. In this world there is the same ...
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7 votes
1 answer
153 views

Can a creature have an endoskeleton made of cellulose?

I've been doing research for my speculative evolution project, and I am currently mapping body plans for the main lineages of organisms I'm going to feature in this project. One of them has an ...
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23 votes
15 answers
4k views

Are there any non-organic resources that are rare in the grand-scheme of the Universe, but common on Earth?

I have been world-building a setting where a species of advanced aliens invades Earth, only to be forced off after the humans resort to guerilla tactics. In this setting, biological life is abundant ...
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  • 1,075
4 votes
3 answers
184 views

Could you detect extrasolar intelligence using a non radio-telescope or other instrument?

The James Webb Space Telescope, after decades of development, has finally launched. It stands to reveal great knowledge about the dawn of the universe, and great insights into extrasolar planets. With ...
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  • 2,441
2 votes
7 answers
302 views

How dangerous are the equivalent of flying piranhas to the ecosystem?

A zoo containing species from two different planets houses some very voracious specimens. I am calling them Galorian Nibblers. The best way to describe them would be as a mix of starlings and piranhas....
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  • 8,617
6 votes
3 answers
190 views

What Might SETI do with a trillion dollar budget? [closed]

Imagine a sci-fi scenario where there is, in effect, an arms race between countries in terms of investing in SETI-style efforts, each country wanting to make sure that if there is any intelligent life ...
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3 votes
4 answers
584 views

Aliens exist on the other side of the nearby wormhole, but we don't know wormhole exists yet. How might they be detected and communicated with?

Scenario: Humans have setup an observation/research station close enough to study the super blackhole Sagittarius A*, which in this world is a wormhole. Aliens exist on the other side. (I am flexible ...
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2 votes
2 answers
86 views

Transit for an advanced aquatic species?

I'm designing an aquatic, fish-like species for a sci-fi setting and I've had trouble deciding on methods of transit, particularly mass transit, that would be viable for them. I've considered a few ...
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6 votes
6 answers
341 views

How could human-like intelligence evolve in a nonsocial, non-carnivorous species? [closed]

It seems like two potential motivations behind human ancestors' evolution of intelligence were their complex social groups and behaviors, and hunting behavior requiring more strategic thinking in ...
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11 votes
15 answers
2k views

Could a super-advanced but sociopathic alien civilization "blind-hack" Earth, even if it had never even heard of humans?

Imagine super-advanced aliens who know nothing of humans because their only view of Earth is from light that left Earth billions of years ago.. perhaps even from light that left before Earth was ...
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-2 votes
4 answers
199 views

How to keep the peace after an attempt to colonize an inhabited planet?

We messed up. Space colonization is tricky. Sometimes, things go awfully wrong with space colonization. This is the year 2451 and we've just had a failed colonizing expedition, with grave consequences....
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4 votes
5 answers
217 views

What are ways an alien species could have a subtle inability to pronounce certain sounds in Earth languages?

Nothing too huge, just things you might notice after awhile if you're really paying attention and don't shrug it off as a slight speech impediment -- which it kinda is, I guess, but y'know what I mean,...
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1 vote
3 answers
164 views

what alternative topological shapes could alien life take on?

I've always been intrigued by the idea that alien life would be completely different from life on this planet. recently, I've been doing some research and found out that humans, along with other ...
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4 votes
3 answers
485 views

How to Detect Things Through Lava

I'm coming up with an alien species that can swim through magma. Assuming that all necessary body parts are somehow protected from/immune to the magma, what would be feasible senses for it to use to ...
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2 votes
1 answer
102 views

Society/culture of intelligent, eusocial ambush predator aliens? [closed]

EDIT:// Mainly looking for religion/politics I suppose, but any answer would be great. Not omnivorous at all, I thought I made that clear already. Local ecology/environment -- I already described ...
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2 votes
3 answers
163 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 ...
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3 votes
10 answers
388 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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  • 1,117
2 votes
2 answers
131 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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2 votes
6 answers
196 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 ...
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  • 553
5 votes
4 answers
636 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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-4 votes
1 answer
108 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 ...
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5 votes
2 answers
233 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 ...
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  • 59
7 votes
9 answers
946 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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  • 51.9k
-1 votes
2 answers
101 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, ...
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  • 11
2 votes
1 answer
135 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 ...
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0 votes
1 answer
178 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 ...
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