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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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6answers
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What kind of environment would favor hermaphroditism in a sentient species over regular, old sexes?

I'm trying to create alien species that is hermaphroditic, with strong sexual conflict. In essence each being tries to trick or force (by mechanical or hormonal means) its partner to take role of ...
2
votes
4answers
106 views

What are the consequence to communication if a species can speak and listen at the same time? [on hold]

My aliens have evolved so that they can simultaneously speak and listen. At the very least, they don't have to wait for a reply before starting to talk, and they can be speaking to person A while ...
0
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1answer
89 views

How close would a planet need to be to its star to be dangerous but still habitable with thriving civilisations? [closed]

I'm creating an alien species and want to have them a bit too close to their star but of course, don't want to kill them. They're not very advanced technology wise but they have powers caused by ...
3
votes
1answer
74 views

Physically based explanation for glowing geometric shapes found embedded in a city, visible only in IR [closed]

I'm looking for an explanation for the presence of large geometric luminescent formations that are found to be embedded in the infrastructure of a city. They must be esentially undetectable to the ...
11
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5answers
383 views

What minerals that are more durable than calcium would be suitable for bones?

Edit: I am asking in the context of alien life, should have specifyed that to begin with. I have many ideas for fantasy/sci fi races, and one that I kept coming back to is a species with bones that ...
5
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2answers
247 views

Crash-landed aliens - political repercussions? [closed]

Spinning off of the question "Can humans save crash-landed aliens?", I immediately wondered what the real-world political effect such a landing would cause. To summarize - Aliens crash-land at the ...
9
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4answers
472 views

Can humans save crash-landed aliens?

An alien ship that has been observing earth, and humans in particular, for the past year has sustained catastrophic damage and crash lands on earth. While the alien ship has a crew of about 20 ...
5
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3answers
126 views

How could somersaulting worms evolve?

In Wayne Douglas Barlowe's classic book "Expedition" he has many strange creatures. One that intrigues the most is this one, the flipstick. It has two feet on either side and uses them to flip ...
7
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4answers
237 views

Aliens in a 4D universe try to explore our 3D spacetime fabric: How can they do it?

They do not necessarily meet humans and try to interact with them. This question is more about the technical possibility/impossibility of 4D aliens being able to "analyze" the inner structure of our ...
17
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14answers
2k views

Would an alien lifeform be able to achieve space travel if lacking in vision?

Think of this alien life form as something resembling earth bats, placed in a planet with Earth-like conditions. Micro-bats have small and poorly developed eyes. Similarly, this alien species is ...
16
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3answers
2k views

How do you conduct xenoanthropology after first contact?

In the very near future, humans (somehow) travel to a distant planet - and discover aliens who turn out to be uncannily like us. Their appearance is, to put it bluntly, freakish, but they are humanoid ...
4
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1answer
113 views

Need some help in creating silicon life in cold temperatures

I am a new person to this but I have been looking at similar questions about silicon life. I'm currently trying to create silicon-based lifeforms on a planet with a surface temperature of about, -36....
-1
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2answers
113 views

What would our food taste like to a far-out alien civilization? [closed]

In my world, aliens who have been able to create wormhole tech and visit earth to immerse themselves in the culture here. they split into groups and visit the largest cities (NY, London, Paris, ...
9
votes
2answers
131 views

Anatomy of a walking octopoid

I have some alien creatures which are essentially land-going octopoids somewhat larger than humans. Tentacles not being a good form of propulsion on land, they have rudimentary 'legs' with one bone ...
0
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7answers
233 views

Predators part 2: How can a boarding action from super aliens be repelled? [closed]

NOTE: This question has been reworded in response to an "on hold" designation. In this post there is a description of an alien species: (You are murderous alien pirates, how do you get onboard a ...
5
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6answers
371 views

You are murderous alien pirates, how do you get onboard a victim's spaceship? [closed]

Backstory: One space-faring civilization detects evidence of intelligent/sapient life on another planet. They send emissaries. The people on the planet, a species of intelligent apex predators, ...
4
votes
6answers
526 views

What benefits would translucent full body armour do for immortal beings? [closed]

Set in present day Egypt, a race of immortal humanoid beings were seen with a translucent body armour covering from head to toe. They come in peace and harbour no ill intents, that said their kind of ...
9
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2answers
140 views

What kind of governments would a species of empaths be inclined to develop?

I am in the early stages of developing an alien species and one of their defining traits is that they are empathic upon physical touch. They can only sense feelings/emotions/intent, not read minds, ...
5
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15answers
2k views

Highly technological aliens land nuclear fusion powered ships in medieval city and slaughter everyone, using swords? [closed]

I want to create a scenario where highly technological aliens invade a medieval earth, the kind with magic and dragons and such. But I don't want the aliens to be completely overpowered. I want them ...
11
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11answers
2k views

Alien invasion to probe us, why? [closed]

In popular culture on my Earth-like planet, alien-abduction stories, anal probing and conspiracy-theories are well-known but largely considered by mainstream culture to be delusions or fanciful ideas ...
1
vote
3answers
137 views

If aliens would be like us, how can we survive [closed]

We Humans are the most intelligent species of this planet, we have total control over all other species of this planet, we can use them however we want like (Food,clothes,experiments). We are the most ...
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1answer
73 views

How would a species with crustacean-like “mouths” sound when speaking? [closed]

What might their language sound like? Would they have any speech impediments to contend with speaking a Common language?
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1answer
187 views

Are two headed creatures possible? [closed]

I'm looking at making an alien race with two heads. The idea is that it has two brains as well, which instead of having two consciousnesses the brains are linked together as one. Is this possible? ...
9
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4answers
1k views

How do sapient birds/theropods build their seats?

Thinking about the shape gets pretty weird. So my species has a more or less horizontal posture, pretty much a small sentient raptor. They can assume an 'upright' position, but only in the sense of a ...
8
votes
1answer
304 views

Mathematics of monsters

Researching for a science fiction novel. My character loves math + I have dyscalculia = Problem. Therefore, I need your help. In my story, there are aliens we can see, but we can't hear or touch. ...
10
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4answers
1k views

Ways other than sleep to restore cells/neurons

So I have a planet with multiple species on it. My planet is tidally locked. I know it is generally thought a tidally locked planet couldn't harbor life because of the extreme temperatures, but my ...
29
votes
14answers
6k views

How can I launch a projectile to hit something in orbit, using only geological structures and power sources?

As an ancient organism whom currently occupies a large chunk of a planet beneath the surface, I have a pesky issue with an invasive species. These humans have decided to colonize my home, mistaking it ...
1
vote
0answers
50 views

What would plant life on 55 Cancri e be like? [closed]

55 Cancri e is an actual exoplanet which should be around twice the size of Earth so it would be high gravity. It also is thought to be a carbon planet, meaning the role silicate takes on our world ...
2
votes
2answers
183 views

What would annihilate life on a planet but allow it to be habitable 1-10 years later? [duplicate]

I'm writing a fantasy/sci-fi story. Imagine an alien race, about as advanced as any sci-fi alien race has ever been depicted in any REALISTIC medium. They're gonna target an earth-like planet. I need ...
7
votes
3answers
732 views

Life on a gas giant?

I know of the conceptualized "Sinkers", "Floaters" and "Hunters" that Carl Sagan and Edwin Salpeter of Cornell conceived of - as possible life forms that might inhabit a gas giant. At the time they ...
34
votes
25answers
9k views

What could prevent us from making alien technology if we had the schematics?

This question is inspired by Could medieval people produce automatic firearms if they had access to the schematics? I have simply moved it forwards in time as follows: In 2019 we receive an alien ...
9
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5answers
726 views

What are ways a horned alien race could wear space helmets?

I've already considered that they may file their horns down, but keeping in mind that their horns gradually regrow, it is an inconvenient solution. This is what their horns typically look like: ...
8
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2answers
176 views

Could a Nautilus Shell, Squid Gladius, or similar structure eventually form the basis of a Spinal column/Skeletal system?

Ok, so, some quick background... I'm not an evolutionary biologist or anything, but I'm helping a friend with some alien design ideas, and at least one of them she designed and wanted help to somehow ...
3
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3answers
702 views

What kind of food would be common on a tropical rainforest/ocean planet? [closed]

I have an alien planet with the entire world landmass arranged in two giant rings roughly 10 degrees north and south of the equator. Everything above sea level is beach or tropical rainforest. The ...
1
vote
3answers
165 views

Do aliens gamble? [closed]

I have read a number of sources that indicate that gambling behaviours in humans are the result of evolutionary adaptations. If gambling is the result of the specific evolutionary history of our ...
10
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5answers
719 views

Tiny humanoids?

There are many tiny humanoids in fiction, the Arquilians of Men in Black, the Gargantians of Buzz Lightyear Star Command and a few others. This raises the question, is it possible for a humanoid ...
7
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3answers
315 views

How plausible is a civilization, or life, that perceives time in reverse?

Humanity, with modern science, has established that the Big Bang happened 13.8 billion years ago. The universe appeared in a low-entropy state, and for billions of years has been expanding and moving ...
9
votes
2answers
388 views

Could an alien evolve to speak through its anus?

Humans can speak making precise movements of our tongues, teeth and vocal chords. I want a sentient creature whose carnivorous mouth-parts are completely unsuitable for speech to be able to ...
4
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3answers
184 views

How do one teach thermodynamics to Higher dimensional beings?

Suppose an entity from a higher dimensions who can experience time flowing both forward and backward wants to understand our world and how far humanity have advanced in tech and science, is it ...
-1
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1answer
105 views

Could life be living in Europa? [closed]

The ice is so thick that no probe sent from Earth can detect life under the ice. Radio would not work well under the ice so we could not communicate with Europians if they are advanced. What would ...
1
vote
0answers
52 views

What would be the culture of an advanced socially mature species? [closed]

The species is eusocial and incapable of stimuli such as adrenaline. They are highly affectionate, highly extroverted, can feel nirvana out of anything, are suppose to be masters at every social ...
1
vote
1answer
128 views

How could monopods evolve? [closed]

In Wayne Barlowe's book Expedition he has some creatures who have become monopods, or only having one foot. They use it to hop through the dense air. Since the author never really got into the details ...
22
votes
11answers
6k views

How long would it take to nuke an alien spaceship in orbit?

Some gigantic, and presumably evil, alien spaceship has taken up residence in LEO. This spacecraft is ominously blocking all satellite communications, and launching smaller flying saucers towards the ...
19
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7answers
3k views

Aquatic aliens and the effects of acceleration in space-flight

A sentient species of water-dwelling aliens achieve space-flight. Their living quarters contain water [no free gases]. They have evolved over millions of years to regulate their buoyancy at will. ...
0
votes
3answers
232 views

A proper latin name for an alien creature [closed]

I am designing an alien creature, an oxygen breather on an Earth-like planet. These creatures have a crest on their back that changes color according to the mood in which they are. That crest is a ...
14
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14answers
7k views

How would aliens test humans for empathy?

500,000 people have been kidnapped from all over the world by aliens. The aliens want to see if humans have empathy, and they can't understand our languages, as we speak they hear just random noises ...
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2answers
100 views

How could vertebrates evolve to only have two legs? [closed]

I know how humans and flightless birds evolved bipedalism, but could life on land and so on evolve with bipedalism form the start? Try to think of something more than just two finned fish equivalents.
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4answers
248 views

If an alien had evolved on a planet with 10 times Earth's gravity, how far into Earth's Ocean could they dive?

Let's assume that this hypothetical alien crawled out of the identical primordial ooze to the point where they share significant genetic similarity with humans, and due to either evolution or outside ...
1
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1answer
149 views

How humans could establish a colony on this planet? [closed]

Yesterday I created an exoplanet on Space Engine, and then started to imagine how life could be possible on that little rock. I started to think about bacterial cells / archaea, anaerobic organisms ...
10
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10answers
3k views

Aliens performing successful medical procedure on humans at first contact?

So, humans have finally figured out how to build a solar-system crossing ship. On the way to the first exo-planet to be colonized, an accident happens, and a few people wind up floating through space, ...