How to Name a Spaceship or Sci-Fi Planet
Ships and planets are characters in their own right. Here is how naming traditions work, how real astronomers label worlds, and a simple method for inventing names that fit your setting.
Ask a sci-fi fan about Serenity, Tatooine or Arrakis and they will picture an entire mood, not just a name. Ships and planets are the two things your characters keep coming back to, so their names get repeated more than almost anything else in your story. This guide covers the main ship-naming traditions, how real astronomers name planets (and why that is useful for fiction), and a method you can follow to invent names that feel like they belong to your universe.
Ship names are a tradition, so borrow from it
Naming vessels is much older than spaceflight, and sci-fi mostly inherits the habits of the sea. Knowing the habits helps you either follow them or break them on purpose. The common families look like this:
| Family | Feel | Examples |
|---|---|---|
| Virtues and qualities | Disciplined, official, hopeful | Intrepid, Dauntless, Resolute, Endeavour |
| Myth and legend | Grand, epic, a little fateful | Titan, Atlas, Valkyrie, Hyperion |
| Animals and fierce things | Fast, predatory, military | Falcon, Wolfhound, Barracuda |
| Places and people | Homely, historical, commemorative | Columbia, Discovery, a founder's surname |
| Jokes and attitude | Personal, irreverent, memorable | Heart of Gold, Just Read the Instructions |
Real spaceflight follows the same pattern. NASA's shuttle orbiters were Columbia, Challenger, Discovery, Atlantis and Endeavour, each shared with an earlier sailing vessel, and the Apollo 11 lunar module was called Eagle. Fiction does the same thing with more drama: the Enterprise is a classic virtue-and-voyage name, and Nostromo, the freighter in Alien, borrows its name from a Joseph Conrad novel.
Match the name to who owns the ship
The best test is simple: who named it, and what did they want it to say? A navy names ships to inspire discipline and pride. A smuggler names a ship to be funny or defiant. A corporation names it after a product line or a founder. A colony ship might carry a hopeful, backward-looking name for the home it left.
Iain M. Banks's Culture novels are the standout example of tone as worldbuilding. The ships are huge artificial minds that pick their own names, and those names are long, wry statements such as So Much For Subtlety or Just Read the Instructions. You learn how that civilization thinks before anyone explains it. The humor is the characterization.
Quick rule: if two factions in your story have ships with the same style of name, readers will assume they share a culture. Give each faction its own naming habit and you get free worldbuilding.
If you want a fast list of candidates in several of these styles, the spaceship name generator is a good way to see which family feels right for your crew. For a sci-fi franchise flavor specifically, the Star Wars name generator offers names in that galaxy's style, inspired by the films rather than connected to them.
How real astronomers name planets
Real naming is a useful contrast, because it is mostly not poetic. A few conventions you can rely on:
- Exoplanets get a star name plus a lowercase letter. The star keeps its own designation, and planets are lettered in order of discovery, starting at "b". So 51 Pegasi b was the first planet found around 51 Pegasi. Letter "a" is reserved for the star itself.
- Survey names are common. Planets found by the Kepler mission are labeled like Kepler-452b: mission, star number, planet letter.
- Stars have layered catalog names. Bright stars may carry a Greek-letter designation within a constellation (the "Alpha" in Alpha Centauri), while fainter ones appear only in numbered catalogs.
- Solar-system features follow themes. Surface features are named by international agreement under themed rules; for instance, most features on Venus are named after women, real or mythological. If you want to be exact about any specific rule, check the International Astronomical Union's published guidelines rather than relying on memory.
The lesson for writers: catalog names are what a survey team or a trade database would use, and invented names are what the people living there would use. The same world can have both.
Catalog designation or invented name?
You do not have to pick one. Some of the most convincing settings use both at different levels of society. LV-426 in Alien sounds like a grid reference because that is how a company sees a rock. A settler on that same rock might call it something far less tidy.
- Use the code for new, remote, uninhabited or corporate-owned worlds: Kepler-style codes, letters and numbers.
- Use an invented name once people live there and have feelings about the place.
- Show the shift in your story. A character who stops saying "HD-4471 c" and starts saying "Harbor" has been through something.
Where good planet names come from
Many famous fictional worlds are borrowed, bent or described. Tatooine was inspired by Tataouine, a place in Tunisia where some filming took place, with the spelling altered. Arrakis sounds arid and old, which suits a desert world. Pandora and Solaris use myth and sunlight to suggest what the planet is like, and then the story complicates it.
Four dependable sources you can use:
- Real places, altered. Change a vowel or drop a letter from a town, river or mountain name.
- Myth and old languages. Pick a mythological name or a word from a language the colonists might plausibly speak.
- Descriptive names. The first settlers name it for what they see: Redwater, Greyfall, Long Noon.
- Phonetic invention. Build a name from consistent sounds, so a region's worlds sound related.
The planet name generator is handy when you need a batch to sort through, and if you also need the people who live there, try the alien name generator so the species and the world share a sound.
A five-step method
- Decide who is speaking. Navy, crew, corporation, settlers, natives?
- Pick one naming family for that group from the table above.
- Write ten candidates without judging them. Aim for variety of length and sound.
- Say them aloud in dialogue: "Take us to ___". Cut anything clumsy, or that sounds like a real brand or an existing franchise.
- Add the short form. People shorten names. Resolute Dawn becomes "the Dawn"; make sure that shortening still works and does not clash with another name.
Worked example: a mining colony
Say a mining company founds a colony. The company would label the planet Meridian-9 c in its records. The miners call the planet Slag, partly as a joke. The freighter that serves it is the Patient Hand, named by a captain who has learned that deliveries are always late. Three names, three voices, one coherent world.
Machines, cities and neighbors
Once ships and planets are done, the same logic extends to everything else. Artificial crew members deserve their own style: a factory-issued serial, a friendly nickname, or a name they chose themselves, which says a great deal about how your setting treats them. The robot name generator can seed ideas. For a grittier near-future city setting, the cyberpunk name generator gives street-level handles that suit dense, corporate-run places.
Common mistakes
- Apostrophe overload. One apostrophe can signal a glottal stop; five signal a lack of ideas.
- Everything sounds the same. If every world ends in "-ia" or "-on", readers cannot tell them apart.
- Unpronounceable names. If a reader has to stop and decode it every time, they will stop saying it in their heads.
- Accidental real-world meanings. Search the name, and check it does not mean something unfortunate in another language.
- Borrowing a trademark. Names inspired by a franchise are fine for inspiration, but avoid using a protected name for something you plan to publish or sell.
For more on how sound and syllable choice work in invented names, see our guide to creating fantasy names, much of which applies to alien worlds as well.