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Is it possible for a race of alien humanoids to evolve a diet based of semen?

On this planet there are two species of alien humanoids creatures , one group evolved an omnivore based diet and the other has a semen based diet, both groups are bipedal and share a common ancestor. ...
user avatar
12 votes
16 answers
6k 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-...
mammifereviolet4694's user avatar
17 votes
10 answers
3k views

How could a subterranean alien lifeform develop space travel?

I have a sentient lifeform populating an Earth-like planet in terms of gravity / composition. But since that world is close to an old K Type star, the atmosphere is evaporating and letting UV rays ...
Marpal's user avatar
  • 291
-1 votes
1 answer
220 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 ...
Muze's user avatar
  • 1
6 votes
3 answers
3k views

What if Earth was eaten by a giant slow moving alien creature?

I'm coming up with a science fiction world for an assignment. Would it be possible for a planet like Earth to be eaten by a giant alien creature that moves through space at a relatively slow speed ...
Mary's user avatar
  • 79