Celestial Cat Names — 100+ Space and Star Ideas

Why Choose a Celestial Cat Name?

Cats have been connected to the cosmos for thousands of years. Ancient Egyptians associated cats with Bastet, a goddess linked to the moon. Sailors relied on cats and the stars equally to guide them safely through the night. And let's be honest — there's a mystical, otherworldly quality to cats that practically demands a name with a little cosmic sparkle.

Beyond the mythology, space cat names are simply fun. They're unique without being hard to pronounce, they come with built-in nicknames (Nova becomes "Novie," Jupiter becomes "Jupe"), and they give you a wonderful conversation starter at the vet's office. A celestial name works for any breed, any coat color, and any personality — from the regal Siamese who thinks she rules the galaxy to the chaotic orange tabby who's basically a supernova of energy.

Star-Inspired Cat Names

Stars are the most classic source for celestial cat names. They sound beautiful, they carry meaning, and many of them are surprisingly easy to say — which matters when you're calling your cat in from the porch at 10 PM. Here are some of our favorites drawn from real stars and star-related terms.

Planet and Moon Cat Names

Our solar system is packed with naming inspiration. Planets carry the weight of Roman gods, and their moons often have equally poetic names drawn from mythology and literature. These names tend to feel grand and powerful — perfect for a cat who already thinks they own the place (so... every cat).

• Mercury — The swift messenger planet; great for speedy, zippy cats
• Venus — Goddess of love and beauty; ideal for affectionate, gorgeous cats
• Mars — The red planet; perfect for ginger or red-coated cats
• Jupiter — The king of planets; fits a large, commanding cat
• Saturn — The ringed planet; great for cats with distinctive markings
• Neptune — Deep blue and mysterious; suits aloof, enigmatic cats
• Pluto — Small but beloved (still a planet in our hearts); perfect for tiny cats with big personalities
• Luna — Latin for 'moon'; one of the most popular celestial cat names for good reason
• Titan — Saturn's largest moon; great for big, powerful cats
• Europa — Jupiter's icy moon; lovely for white or silver cats
• Io — Volcanic moon of Jupiter; short, punchy, easy for cats to learn
• Callisto — Another moon of Jupiter; elegant and distinctive
• Phobos — Mars's moon meaning 'fear'; fun for a cat who loves to startle you
• Ariel — A moon of Uranus; sweet and whimsical
• Triton — Neptune's largest moon; strong and regal
• Oberon — Moon of Uranus and king of the fairies; regal and literary

If you have two cats, planet and moon pairings make wonderful sibling names. Think Jupiter and Io, Saturn and Titan, or Neptune and Triton. These pairs sound great together and have a built-in connection — just like your bonded feline duo.

Galaxy, Nebula, and Deep Space Cat Names

If you want a name that feels vast and mysterious — something that captures the infinite depth you see when you look into your cat's eyes — the deep reaches of space have you covered. Galaxies and nebulae have some of the most evocative names in astronomy.

Constellation Cat Names

Constellations are some of the oldest named patterns in human history, and many of them make stunning cat names. These names carry ancient mythology, rich meaning, and a sense of wonder. They also tend to be a little more unusual, so if you want your cat's name to stand out at the vet's office, this is the category for you.

• Orion — The legendary hunter; one of the most recognizable constellations
• Leo — The lion; practically made for cats
• Draco — The dragon; great for fierce, fiery cats
• Lyra — The lyre of Orpheus; musical and elegant
• Phoenix — The mythical firebird constellation; fits cats who've overcome adversity (hello, rescue cats!)
• Cygnus — The swan; graceful and serene
• Cassiopeia — The vain queen; perfect for a diva cat (nickname: Cassie)
• Perseus — The hero; bold and brave cats
• Gemini — The twins; great for a cat with a split personality
• Aquila — The eagle; sharp-eyed, alert cats
• Corvus — The crow; suits dark, intelligent cats
• Pavo — The peacock; for cats who love to show off

For more ideas beyond the cosmos, check out our full guide to unique cat names — we cover everything from mythology to pop culture. And if you have a dark-furred feline, our black cat names article pairs beautifully with these celestial options.

Space Cat Names from NASA and Pop Culture

Space exploration and science fiction have given us a treasure trove of naming inspiration. These names carry a sense of adventure and discovery — and some of them come with seriously cool backstories you can share when people ask about your cat's name.

• Hubble — After the Hubble Space Telescope; for cats who love to observe
• Buzz — After Buzz Aldrin; short, fun, easy to call
• Kepler — The planet-hunting telescope; for curious, searching cats
• Laika — The first animal to orbit Earth (a dog, but cats won't mind borrowing it)
• Rocket — Self-explanatory; for zoom-around-the-house-at-3-AM cats
• Ripley — Ellen Ripley from Alien; for brave, no-nonsense cats (and she had a cat named Jonesy!)
• Jonesy — The cat from Alien; the most famous space cat in cinema
• Cosmo — Short for cosmonaut; friendly and approachable
• Sagan — After Carl Sagan; for wise, contemplative cats
• Astro — Classic space prefix; upbeat and energetic
• Juno — NASA's Jupiter probe; strong and purposeful
• Apollo — The moon missions (and the Greek god of the sun); timeless and powerful
• Felicette — The first (and only) cat launched into space, in 1963; the ultimate space cat name

Celestial Names by Cat Color

Sometimes the best way to find the right name is to match it to what your cat actually looks like. A shimmering silver coat calls for a different name than a blazing orange one. Here's a quick guide to matching celestial cat names to your cat's appearance.

Of course, rules are made to be broken. If your ginger cat just feels like a Luna, go with your gut. The best name is the one that makes you smile every time you say it.

Tips for Choosing the Perfect Celestial Cat Name

With over 100 options on this list, narrowing down to just one can feel overwhelming. Here are some practical tips to help you land on the perfect space cat name.

1. Say it out loud — a lot. You'll be calling this name for 15-20 years. Say it in a happy voice, a stern voice, and whisper it softly. Does it still feel right?
2. Keep it to 1-3 syllables for everyday use. Cassiopeia is gorgeous, but you'll probably end up calling her Cassie. That's perfectly fine — just make sure you love the nickname too.
3. Consider how it sounds with your other pets' names. Luna and Sol are a beautiful pair. Jupiter and Jupiter's Mom... less so.
4. Test the 'vet office' rule. Imagine a vet tech calling your cat's name in a waiting room. If it makes you cringe, keep looking. If it makes you proud, you've found the one.
5. Give it a few days. Write your top 3 names on sticky notes and put them on the fridge. See which one you naturally gravitate toward after a few days of living with your new cat.
6. Let your cat's personality guide you. A name like Rocket suits a hyper kitten, while Cosmos might be perfect for a calm, contemplative senior cat.

If you're also considering mythology-based names that overlap with the celestial theme, you might enjoy our list of mythological cat names — many stars and constellations are named after mythological figures, so there's a lot of natural crossover.

The Complete Celestial Cat Names List

Here's every name from this article in one easy-to-scan list, organized alphabetically. Bookmark this page so you can come back to it while you're deciding — or share it with the family so everyone can weigh in.

Once you've chosen the perfect celestial name for your cat, there's one more thing you might want to do: make it official in the most magical way possible. At PetTales, you can create a personalized storybook starring your newly named cat as the hero of their own adventure. Imagine little Nova or mighty Orion illustrated in a beautiful picture book — it's a keepsake that celebrates both their name and their personality. You can preview your book for free, no credit card needed.

Final Thoughts

Naming a cat is one of the very first acts of love you get to share with your new companion. A celestial cat name carries thousands of years of human wonder — our fascination with the night sky, our myths about the stars, and our drive to explore the unknown. Whether you choose something classic like Luna or something unexpected like Félicette, you're giving your cat a name that's as vast and beautiful as the universe they've just expanded by walking into your life.

Take your time, say the names out loud, and trust your instincts. Somewhere on this list — between the stars and the planets and the galaxies — is the perfect name for your cat. Happy naming, and may the stars align in your favor. 🌙✨