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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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9 votes
12 answers
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Why would aliens use Kaiju to cause an apocalypse instead of more effective weapons? [closed]

Kaiju in fiction are usually alien in nature or are created by aliens. However, in my story Kaiju seems to be less effective as an apocalypse compared to diseases, asteroids, black holes, and many ...
Coolcats112's user avatar
  • 1,060
5 votes
4 answers
498 views

Legitimacy of an army of neotenous amphibians

In my world, there exists a race of amphibians we'll call "phrogs". Phrogs were a relatively peaceful race, who evolved a kind of telepathy to allow them to communicate underwater, which got ...
iolim5678's user avatar
  • 175
9 votes
6 answers
2k views

Universal Graphical Representation of a specific moment in time

Similar to how the famous Voyager "Pulsar Map" image was an attempt to define a given location in space in a way an alien culture could decode and find Earth - How could you create an ...
Chromane's user avatar
  • 4,558
7 votes
7 answers
2k views

How would humans on Earth detect a Shkadov thruster on other side of the Milky Way Galaxy?

Apologies if the title is confusing - I've been trying to figure out how to word it for a while now. Essentially I am writing a (relatively) hard science-fiction story set in the present/very near ...
jebbington's user avatar
2 votes
2 answers
1k views

The "Face" in Cydonia, Mars

I want to write a story in which colonists on Mars form a religion around their belief that the so-called "Face" of Cydonia is artificial - and they're right. However, the establishment ...
ajderxsen's user avatar
  • 121
0 votes
1 answer
150 views

What would be left after 150,000 years [closed]

In the story I'm writing a human is landing on a planet of a far advanced alien civilization that went extinct. The reason for that is "unknown" so there was no war or natural catastrophe. ...
Tobias Reich's user avatar
5 votes
9 answers
2k views

Aliens with an extra-set of ears- any possible benefits?

While doing some concept drawings of an alien species for a project of mine I somehow wound up drawing a head with two sets of ears, one pair on the top of the head and the other lower with one on ...
king of panes's user avatar
1 vote
7 answers
2k views

How do different species communicate casually in-person?

Setting: the same one as this question and this question; TL;DR, life is common throughout the Universe, it just tends to blow itself up before it figures out FTL travel and upgrades to Kardashev 2, ...
controlgroup's user avatar
  • 4,906
3 votes
1 answer
131 views

Could a biological organism power itself with electricity like a smartphone (or something similar)?

Imagine an alien world where there are are shallow lakes where electricity generating beings (like electric eels or whatever) would power many of the land dwelling creatures, including the dominant ...
Mishima's user avatar
  • 1,019
12 votes
14 answers
2k views

What kind of alien technology would make space colonization viable?

This isn't about what kind of technology would make spaceflight easier, this is about what kind of a discovery would incentivize world superpowers to aggressively invest in spaceflight. I'm asking ...
TerranGames's user avatar
18 votes
9 answers
6k views

How does an explorer civilization survive the Dark Forest Scenario?

The Dark Forest hypothesis is one put forth by author Liu Cixin in a novel named thus, which essentially revolves around three primary assumptions: There is life everywhere throughout the galaxy - ...
controlgroup's user avatar
  • 4,906
0 votes
5 answers
224 views

How do you establish commonly understood terms for "yes" and "no" with beings/aliens who communicate via a single medium/form of energy?

Their medium of communication could be any form of energy; the important point is that they only use one of these to communicate (not, like humans, both sound, sight, touch, etc). If it's not possible,...
Life5ign's user avatar
  • 117
1 vote
0 answers
107 views

what shape would a planet entirely dedicated to watching be [closed]

If I have a planet fully dedicated to watching (think the Eye from Magnus Archives) what shape would allow for constant observation of the whole planet from some sort of tower
Overflight's user avatar
16 votes
8 answers
4k views

Would creatures that drink liquid instead of eating have a stomach?

Is it possible for a creature that exclusively relies on liquid consumption? Specifically, considering the absence of solid food, would these creatures have a stomach?
asteroidbelt's user avatar
0 votes
1 answer
175 views

If a curious solo alien arrived at Earth, what would the most likely human response be? [closed]

Revised question: Suppose a singular alien in his small starship (probably around 200m long) exits warp just outside of Earth's SOI. He, perceiving Earth to be a colony somehow missing from his star ...
Ylahris's user avatar
  • 487
6 votes
4 answers
1k views

How would an alien civilization equivalent in advancement to humans today hide their existence from future humans?

160 light-years from Earth, 1000 years in the future, exists an alien civilization roughly equal in its technological advancement to modern civilization on earth. They fear the possibility of the ...
cxnhgfh's user avatar
  • 69
-3 votes
1 answer
99 views

What color would a purple alien blush? [closed]

I know that we blush because of something to do with our blood, so what color would someone with purple skin blush? Darker purple?
SkyeQuake25's user avatar
9 votes
9 answers
3k views

Cybernetic AIs get hacked, while sentient AGIs are immune?

First question, I hope I do this right! I have a world in which most of the Solar System (including Mars, some Lagrange points of Venus, and most of the gas giants’ moons) have been colonized set a ...
controlgroup's user avatar
  • 4,906
0 votes
2 answers
256 views

A creature gaining Energie through Movement [closed]

I basically have a Facultative anaerobic organism that lives in space (not from another planet but the vacuum of space) and the creature needs to travel to survive. It's not just movement that keeps ...
Lumi's user avatar
  • 19
18 votes
5 answers
4k views

Which Law Enforcement/Government Agencies Would Be Called to Respond to the Crash-landing of a UFO?

I'll keep this brief: I'm not too well versed in secret government protocol nor have I read enough sci-fi books on this type of matter. But simply put, in my story, a series of UFOs crash land around ...
user avatar
1 vote
2 answers
188 views

Effects of Planetary Neutron Bombardment [closed]

A space civilization blackmails Earth by bombarding Venus with massive amounts of neutrons. It's one of their main technologies and there are reasons for not doing it otherwise. What would be the ...
Daniel Ramires's user avatar
1 vote
1 answer
180 views

Is silicon-based blood possible?

I'm building a project featuring several very exotic alien worlds, one of which I had a question about the blood of aliens since the amount of Metals like iron are scarce, so I opted for something ...
M. S. Cancris 's user avatar
12 votes
11 answers
3k views

What is the best term for a species that originated on another planet?

In a future where humanity has expanded to live on multiple planets and then encounters life that does not trace ancestry back to earth, what is an appropriate term for such life? "...
Zags's user avatar
  • 2,805
0 votes
1 answer
107 views

Underwater Civilisation warfare [closed]

I'm interested in finding out, for a humanoid civilisation that develops underwater (with gills), how would they develop the equivalent of a modern-day assault rifle, with a minimum effective range of ...
boboranonymous's user avatar
0 votes
2 answers
154 views

What would Religion that worshipped humans be like with alien followers and why would they do so [closed]

I'm writing a story with aliens from another planet worshipping humans on earth and wanted to know why would a alien species of spider-like humanoids do that. Especially since humans aren't that good ...
user avatar
5 votes
6 answers
1k views

Eyes that aren’t spheres: possibilities? [duplicate]

I have a sci-fi-like universe and one of the species has long, vertical eyes. But would this be anatomically possible without a sphere-like structure? I know that compound eyes are a thing, but how &...
apsistema's user avatar
3 votes
5 answers
368 views

Insectoids and the concept of 'eating well' [closed]

In this project of mine a species of sapient, spacefaring insectoids exists among humans and humanoid species. The insectoids are puzzled by something in humanoid cultures- specifically the idea of ...
king of panes's user avatar
15 votes
17 answers
4k views

How can we meet aliens in an underpopulated galaxy?

I am designing a hard sci-fi universe where humanity is confined to the Solar system and travels using fusion. One of the obstacles I am facing is how to make humans meet one alien race which is ...
FrogOfJuly's user avatar
  • 1,138
3 votes
6 answers
670 views

Is there a maximum number of fingers a species can have in each hand? [closed]

We have 5 fingers in each hand (10 fingers in both hands). So we count in a base of 10 (decimal base) which has the accepted digits of 0 to 9. Higher bases have more accepted digits; for example ...
Snack Exchange's user avatar
18 votes
4 answers
2k views

Does the inclusion of common non-humanoid alien species make rare humanoid alien species more believable?

In a Sci-Fi setting, if there is a vast amount of non-humanoid intelligent life in the universe, like perhaps 20 or 30 species, would this make 4 or 5 species that look similar to each other, or ...
Connor Dawn's user avatar
2 votes
2 answers
397 views

Feasibility of a convergent neural code across species?

I've got a sort of "mind-reading" system involving interpretation of electric fields/impulses in the brain, basically an advanced BCI (brain-computer interface), but the key point of this ...
inkwell87's user avatar
  • 941
3 votes
1 answer
241 views

The miraculous substance of carrangan: can it exist, and what does it change about its planet of origin?

First, this account is a replacement for my old one, Jobah_HigherMind, because I forgot the password after being inactive for four months. But I’m moving away from Algennon questions, at least for now,...
Jobah619's user avatar
  • 117
15 votes
5 answers
3k views

What would aliens glean from our consumer grade computers? [closed]

David just bought a $1500 grand computer, he put the parts together himself. He was about to play some games on it and aliens just yoinked it to study. Without even looking at David or the biology of ...
neo flare's user avatar
  • 1,415
3 votes
5 answers
313 views

How bad would it be, if aliens wiped out high-end processor production? [closed]

Let's imagine Contact with some space-faring civilization tomorrow. We will meet them, "shake their many appendages, <...>, and even attempt diplomacy." The result is that in a few ...
FrogOfJuly's user avatar
  • 1,138
3 votes
5 answers
351 views

A Roswell damage control [closed]

An alien ship crashlands and the it is not completely unrecoverable. Unfortunatelly locals and the police, as well as some camera crews arrive at the scene before my intelligence agency does, so ...
user3653831's user avatar
7 votes
1 answer
328 views

Are there any alternative genetic systems which could allow for the development of emergent complexity?

DISCLAIMER: I am an (intensely interested) layman, not a scientist. Please take my summation of the following concepts accordingly. I'm currently trying to worldbuild a plausible alien species down to ...
the-protean's user avatar
8 votes
6 answers
1k views

Biological human-alien language barrier

Something I've been pondering- spacefaring humanity makes contact with alien species who, while being intelligent enough to learn to understand human languages, their throats or vocal cords (assuming ...
king of panes's user avatar
4 votes
3 answers
304 views

Chlorine-breathing insectoid species

I'm trying to come up with a plausible atmosphere of alien world (Callisto moon) inhabited by insectoid race (they live in caverns underneath/inside the ice crust). I read that chlorine is a much ...
Anton's user avatar
  • 315
3 votes
2 answers
237 views

How could a carbon-based mechanical lifeform evolve naturally? [closed]

Imagine that there is an inhabitable planet that has just been discovered by human colonists. All of the unicellular life and some multicellular life such as plants is normal carbon based life made of ...
Kevonni's user avatar
  • 139
1 vote
4 answers
212 views

Could this hypothetical molecule “read” gene code, to allow universal epigenetics?

Here’s the idea: I want to create a biological info-storing material, probably much like RNA, that—like noncoding RNA does—is able to mediate and enact epigenetic changes to the genetic code/material ...
inkwell87's user avatar
  • 941
3 votes
5 answers
640 views

Could a species with multiple types of genetic material, like a “universal donor”, reasonably naturally exist?

As of late I’ve been developing a concept for a species able to transmit traits through genetic information, basically putting that information into a “host” organism to enact some sort of epigenetic ...
inkwell87's user avatar
  • 941
1 vote
4 answers
226 views

How would I get a moose sized creature with no mouth to be able to survive?

The creature I have thought up has no mouth or eyes. It doesn't eat or drink. It feeds off of the energy present at the core of it planet. The creature is the size of a moose. It has a skeletal and ...
Gwinky 's user avatar
7 votes
9 answers
4k views

Is it believable to store information in live DNA for billion years?

Imagine a civilization that approaches Kardashev II. They are deep into spacefaring, they live on a few less than one-hundred colonized worlds. They've not found evidence of other sapient life, so ...
FrogOfJuly's user avatar
  • 1,138
3 votes
1 answer
123 views

Can combustion create ATP

Could the heat and light from slow and controlled combustion produce ATP from ADP and inorganic phosphate? Could the heat and light drive proton pumps and then could ATP synthase produce ATP from the ...
GrimmReaper18B's user avatar
1 vote
4 answers
214 views

Can cells and other materials be controlled electromagnetically

I'm trying to make a creature with a specialized organ that can be controlled telekinetically with cellular precision. Basically the creature would have a specialized organ connected to the brain that ...
GrimmReaper18B's user avatar
1 vote
2 answers
494 views

Can just heat be used to power ATP production?

I want to have some lifeforms that live around and in hot environments and absorb the heat around them to produce ATP without using any other energy sources. Is this possible? How can this be done? ...
GrimmReaper18B's user avatar
3 votes
2 answers
285 views

How can I make this mode of reproduction make sense?

I'm workshopping a sapient fantasy species, that, in lore, was designed by external forces to be a biological weapon. This species accomplishes this with a form of sexual parasitism that enables them ...
Tardigreat's user avatar
  • 1,183
0 votes
2 answers
195 views

What features will make this creature OP? [closed]

I'm designing several alien worlds, I want each to be very unique. One idea I had (thanks to an online alien fauna generator) was a planet where one species has wiped out all other creatures. It ...
Infinite_Maelstrom's user avatar
4 votes
4 answers
315 views

How much would an alien species, given radio technology on par with ours, know about our world purely from overheard TV broadcasts/radio?

Let us play with the Aliens Steal Our Cable TV trope and assume that... aliens living about 15 lightyears away can listen in on human radio and TV-broadcasts their technological advancement is such ...
Katy's user avatar
  • 137
14 votes
15 answers
5k views

Could there be an alien life form (a complex animal) that lives hundreds of thousands of years, or even millions of years?

On earth, most animals live decades, and only a handful over 100 years. What has led to such a 'short' lifespan across the board? Assuming there may be other carbon-based life forms similar to that of ...
Sach's user avatar
  • 888

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