Space Exploration Writing Prompts

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

The first rover lands on mars and NASA discovers that every boat and plane that has disappeared in the Bermuda Triangle scattered around the surface of the planet.

1,495 upvotes64 comments

On an interstellar cruise of 200 years the 1st class passengers have cryosleep. 2nd class have to serve the 1st but also have cryosleep. You are a born 3rd class passenger, your grandparents boarded decades ago. You find a secret deck with lots of mysterious cryo passengers never seen before…

1,412 upvotes48 comments

“Out of all species of sapients in the galaxy, Terrans are the strangest. A single Terran is tiny, weak, and barely sapient at all. But when they clump together, they form massive colonies made up of trillions of them that share the same intelligence, called a Human.”

1,392 upvotes42 comments

You are chosen to be a passenger on a sleeper ship heading towards a distant star. However you are woken up tens of millennia later by a band of what seems to be talking animals, robots and odd looking humanoids, one of them says "I don't believe it, a progenitor! I thought you were extinct!"

1,384 upvotes24 comments

A human ship activated its self destruct sequence when boarded by an enemy, when humanity was asked why would we do such a thing by the galactic community, we simply responded "We don't give up the ship, such as the crews of old. We never give up the ship."

1,372 upvotes70 comments

It's been publicly confirmed that our galaxy is within the open maw of a massive galaxy-eating beast. The beast can't move faster than light, so it'll take hundreds of millions of years for it to finally bite down. This is something that humans will just have to live with

1,280 upvotes81 comments

"Halt! Our scans show you are harboring an endoparasite and will not be permitted to board!" "A what? Hang on, are you talking about my baby?" "Oh, so you even gave it a name?"

1,121 upvotes132 comments

You are captaining a cutting-edge interstellar spacecraft, far and away the fastest of its kind. Due to the Wait/walk dilemma, you have caught up to a sleeper ship belonging to an ancient generation of humans. You must decide how to proceed.

1,034 upvotes45 comments

You are immortal. Truly Immortal. Most people assume immortality's curse is outliving their species. No one considered outliving multiple UNIVERSES. So here you are, several million years after your 12th big bang.

946 upvotes29 comments

Being an immortal in a dying universe, you're being hunted by the last civilizations, who are keen on harvesting your entropy-defying body and transforming you into their power source.

870 upvotes22 comments

You are a litch who, in an attempt to escape the hero, managed to telekinetically throw yourself into space and landed on the moon. After countless years, you've managed to create a comfortable life for yourself, only for a space shuttle and some astronauts to land nearby and plant a flag.

817 upvotes45 comments

The first spaceship to achieve FTL is stopped by the Universe Police and given a speeding ticket.

815 upvotes19 comments

After finally achieving space travel, humans quickly discovered evidence of alien life in the forms of ruins. MANY ruins. Entire planets devastated, massive fields of debris floating in space and no sign of living beings anywhere. Until we picked up a distress call from an unknown source.

700 upvotes47 comments

Your exploration vessel has worked well with its new human crew members, since humans are eager to see all sorts of different worlds. However when your ship comes across it’s first Oceanic planet, the humans absolutely refuse to leave the ship

695 upvotes48 comments

Before the Apocalypse, a bunch of billionaires got into their spaceship and made for the nearest habitable planet. 500 years later they wake up from cryosleep and begin their colony. What they don't know is that the Apocalypse was averted and the descendants of those left behind are watching.

684 upvotes27 comments

Humans have discovered how to make habitable subspaces before FTL travel, so the humans have the "smallest" territory of all the species in the galaxy.

676 upvotes30 comments

When humanity finally set foot on the first habitable planet outside of the solar system we were surprised, and saddened, to find the ruins of an advanced civilization. We were even more surprised, and confused, when we determined these ruins to be of human origin.

646 upvotes34 comments

"General! What did I tell you about giving a bored human a screwdriver?" *sigh* "Not unless you want a pile of scrap where your spaceship used to be, with a proud-looking human sitting nearby." "And what did you do?" "I gave the bored human Corporal a screwdriver."

639 upvotes30 comments

Humans were just discovered by the intergalactic community right after they defeated the Maw, a terrible species fueled by hunger. No one knows how they did it. That is why they called you to the gathering of great species, to explain how the humans defeated those terrible monster.

617 upvotes60 comments

The Galactic Council and their enemy’s have always used energy based weapons. The sudden scrabble to develop defences against physical weapons REALLY should have started when the humans began to have interest in Mass Drivers capable of firing over 1,000 tons at FTL speeds.

613 upvotes34 comments

While having humans on initial survey teams to determine if a planet is hospitable enough to support a colony, it's important to remember that a humans definition of 'hospitable' is vastly different from the rest of the galaxy.

596 upvotes26 comments

As one of the astronaut on the ISS you and your colleagues watched in horror as the Earth descended into nuclear chaos. You were certain that you were going to die up there, but even though there is no one left on Earth to answer your radio calls you still receive regular supply shipments.

590 upvotes35 comments

Centuries into a generation ship's journey, the ship has a constant plethora of tiny issues and malfunctions overlooked by most of the crew's mechanics in favour of the larger issues. In your off-time, you decide to start fixing some of these minor issues and discover some interesting functions.

582 upvotes30 comments

As the first Mars-born human draws his final breath, the Martian God of Death prepares to argue his case for ownership over his soul.

581 upvotes26 comments

So humanity's galactic divisions are all named after sci-fi franchises. The Enterprise for exploration and diplomacy, the Spartans if combat is needed. This is the story of the less honorably named factions, such as the appropriately named "World Eaters"

557 upvotes47 comments

The Elven people have finally reached the stars and have arrived at the galactic community. Upon arriving, they attempt to assert themselves as the dominant party to the galactic alliance sighting their longevity and wisdom. Only for the Elder Race known as "Humanity" to put them in there place

549 upvotes53 comments

When type 4 civilization patched a black hole that was dangerously next to a human colony, usually other species of the intergalactic community ran away, but humanity was the first to excitingly contact this civilization.

548 upvotes20 comments

Turns out every planet with life has a version of mammals, and they supposed to be weak, small and dumb creatures. The fact that they are not only the dominant animal clade on Earth, but also the planet's intelligent species baffles aliens.

545 upvotes26 comments

Your starship was badly damaged during a routine cargo run. Your distress beacon was answered by a ship full of immortal and beautiful people. You now sit at a bar, trying to make heads or tails as to why they won't let you go after your ship was fixed.

543 upvotes30 comments

The galaxy is on the brink of war between two major factions. In order to prevent it, the two sides secretly chose modern day Earth to become a scapegoat as an imminent threat to the galaxy. However, they underestimated Earth, which is now a rising third power in the galaxy.

526 upvotes61 comments

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