Space Exploration Writing Prompts

Search thousands of the most popular writing prompts from Reddit, and write a story from any of them with AI.

Species with a specific mating season find long periods in space difficult: without a natural day-night cycle, their biological clocks can drift out of synch with their own kind. Fortunately, humans are adventurous, receptive year-round, and can be found on every port or ship.

60 upvotes10 comments

You're part of an outer space exploratory team and have discovered the most technologically advanced race ever, but they've never left their world and no other race has any clue they exist. You and your team are seriously confused as to why, until you realize that wings never evolved there

58 upvotes2 comments

"When the world was getting colder, we left the planet and took refuge on another. Now that we have returned, we see that our species had survived, but they are so frail and tiny. These humans are a fraction of what we used to be."

56 upvotes0 comments

The ship was a generation ship and a sleeper ship - the crew were descendants of the first crew with occasional frozen crew members reawaken to keep the skills up to scratch. After 200 years an engineer wakes up to find a highly perverted culture has dominated adult crew life.

53 upvotes3 comments

"Hatchling listen. I've seen it a hundred times on a hundred worlds. Where ever men and dragons co exist, our kind eventually fades. Don't underestimate them."

51 upvotes5 comments

The world was thrilled with the announcement that the first mission to Mars would be an all female crew. One year later, the world was terrified when they all returned pregnant.

51 upvotes2 comments

You and your team managed to create a fully fuctional interdimensional transporter that can travel to other universes using a six-digit code. You decide to head to universe 177013 first.

45 upvotes8 comments

A galactic realtor is giving a tour of brand new planets in artificially created star systems for the infinitely wealthy. They proceed to go over the amenities for the available planets as well as the policies for the System’s HOA.

45 upvotes0 comments

What happens if you put a werewolf on the moon?

38 upvotes10 comments

Your ancestors were the crew on humanity's first interstellar colony sleeper ship. Or rather, it was a sleeper ship for the PASSENGERS! For the crew, it's a Generation Ship.

36 upvotes1 comments

It has been a long, long time since two alien civilizations had declared war on each other, and fired light speed missiles at each other. They have since developed FTL technology and made peace, forgetting about their weapons. Today, their missiles arrive at each others planets.

35 upvotes5 comments

In space, no one can hear you scream... Unless you're leaning on the intercom. Then *everyone* can hear *everything*...

33 upvotes3 comments

Humanity has been dead for thousands of years, a foot note in the great book of history, so, when sensors detect movement from Sol, it's fair to say it was cause for concern.

30 upvotes2 comments

Tentacle Lairs are a common issue on starships. Fleshy growths sometimes consuming entire decks, filled with addictive secretions for any captured crew. How does one train to handle them?

30 upvotes5 comments

A lustful and lonely smuggler finds sealed power armor floating in space within a huge wreckage. She is surprised to find the guy inside still alive, and a supersoldier at that.

30 upvotes5 comments

A repair bot on an unmanned deep space research probe is activated to fix the ancient, ailing craft once again. In the vast reaches of space and time, the bot has gained sentience, and as it ponders its lonely life, it yearns to reach out to its creators.

29 upvotes4 comments

“The cities have to move, because the geography changes constantly on this planet.”

29 upvotes3 comments

An alien diplomat finds herself waking from a crash landing, and boots inches from her face. Towering before her is a stranger, easily 7' tall and clad in heavy combat armor from head to toe - wordlessly offering his hand.

29 upvotes11 comments

Your family fled Earth when the aliens made their first friendly broadcast. After a long flight, you land in Space Alaska, aka Pluto.

26 upvotes6 comments

"What's the most beautiful planet in the Galaxy?" A group of seasoned galactic travellers discusses this question.

25 upvotes4 comments

You are a geologist on the first manned mission to Mars, and while taking a soil sample you discover something buried in the Martian dirt, a human skull.

24 upvotes4 comments

You’re a terminal archaeologist. You explore worlds that had sudden extinction level events with the intent of preventing such calamities on Earth and colonial worlds. Today you discover where the end took a week for an intelligent species.

23 upvotes2 comments

While an astronaut is out on a spacewalk to investigate an asteroid mineral deposit, something starts moving around in her spacesuit, and its horny.

22 upvotes9 comments

The chance of being rescued by aliens before your ship's air ran out? Unlikely. The chance of them being sexually compatible with you? More unlikely. The chance that it is actually a college-space bus full of newly-single sorority aliens looking for revenge fucks? No way!

22 upvotes8 comments

You are a survivor of the first ship with a functional (failed) Alcubierre drive. Your ship crash landed back on Earth but every motive, product, ads, billboards, dish, that you can see is Marmite. You realise that the Cult of Marmite has taken over the World. Now no food doesn't have marmite.

20 upvotes4 comments

The Space Race continues into the 21st century, with humanity preparing to reach Mars by 2000. Two scientists from rival nations landed, and met each other for the first time...

19 upvotes2 comments

While we appreciate your passion for the protection of Earth, the Terran Defense Force doesn't recruit 60 year olds. But if you want to help, there is a program looking for volunteers... it's experimental.

19 upvotes6 comments

You, a human, were sent to observe a developing alien species, but your space shuttle crashed and you were injured and pass out in the crash. You awake in an alien hospital, as aliens desperately try to save you

19 upvotes1 comments

Earths Free Use laws pushed you to explore the stars. It’s rare enough when you meet another human, you actually look forward to what inevitably happens.

19 upvotes7 comments

You graduated as an officer in the Space Corp only a month ago, and are on your first assignment. The ship is unexpectedly attacked, and all the other officers on the bridge are killed. Other officers are on their way, but for now you're in charge.

18 upvotes2 comments

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