Cool Planet Names
Every great sci-fi universe needs planets worth visiting.
Famous Cool Planet Names That Nailed It
Real-world names that became iconic. Here's what makes them work.
A harsh, arid sound that perfectly matches the desert world it names — the double 'r' and sharp endings feel ancient and inhospitable.
Borrowing from Greek mythology (Pandora's box), the name signals both beauty and hidden danger — a perfect choice for a world that's lush but lethal.
Named after a real Tunisian town, it was transformed into something exotic and alien through minor alteration — a masterclass in creative planet naming.
Tips for Choosing Cool Planet Names
Use double vowels and unusual consonant clusters to make planet names feel alien and ancient.
Hint at the planet's dominant feature — ice, fire, radiation, life — through the name's sound and feel.
Short, harsh names work for barren or dangerous worlds; longer, flowing names suit lush or mysterious ones.
Avoid overly obvious names (Fireplanet, Iceworld) — subtlety makes a world feel more real.
Consider what the planet's inhabitants (if any) might have named it, and whether outsiders would use the same name.
Frequently Asked Questions
Use phoneme combinations that don't appear in common English words. Double consonants, unusual vowel pairings, and sounds from less familiar languages (Xhosa clicks, Arabic gutturals) all add an alien quality.
Yes — readers and players need to be able to say them in their heads. A planet name full of impossible consonant clusters (Xzrvth) may look alien but breaks immersion. Aim for strange but sayable.
Name only the planets that matter to your story. A named planet implies importance. Too many named planets overwhelms readers; too few makes the universe feel small.
Absolutely — borrowing from real star catalogs, mythology, or physics terminology is a great strategy. Modifying real names slightly (Kepler-442 becomes Keplara) gives you something grounded but fictional.
Planets named by the same culture or empire might share conventions. But diverse naming origins (different species, historical periods) add realism. Not everything in a real universe would follow the same rules.
How to Create Cool Planet Names for Sci-Fi Worlds
Start with the Planet's Character
Use Alien Phonetics
Modify Real Words and Names
Build a Consistent Naming System
Test Against Your Universe's Other Names
Related Categories
Curious about what names mean? Explore Name Meanings →