A dog name can carry a whole little world in a few syllables. Space offers plenty of possibilities, from a familiar moonlit name to an astronomical reference with a lovely canine connection. This shortlist mixes soft sounds, playful choices and longer names that give you room for a nickname.
These nine names are suggestions for dogs of any size, sex or coat colour. The style notes are creative associations, not predictions about personality. Before settling on one, say it aloud alongside the names and everyday cues already used in your home; the Royal Kennel Club recommends avoiding names that sound confusingly similar.
1.) Luna for a soft, moonlit feel
Luna brings a moonlit mood to the shortlist without sounding like a science lesson. Its rounded opening and gentle ending give it an easy, affectionate feel on the page. Picture the name on a plain navy tag, with a small crescent beside it rather than a whole sky full of decoration. A cream dog might inspire the choice, but a dark-coated dog can wear it just as beautifully. If you already love names such as Lucy or Lila, Luna offers a similar softness with a celestial twist. Keep Luna as the everyday version, or save little nicknames for affectionate moments at home.
2.) Orion for a constellation connection
Orion is a constellation name, giving this choice a clear link to the night sky. It also has a slightly storybook quality that works well if your favourite dog names sound like characters in an adventure. The full name looks handsome on a wider identification tag, where the letters have room to breathe. Before choosing a shorter version such as Ori, decide whether you love that nickname as much as Orion itself. There is no need to match the grand sound with a large dog. A small, scruffy companion called Orion has its own appealing contrast and plenty of character.
3.) Nova for a bright, compact choice
Nova feels crisp and lively, with just four letters to fit neatly on a tag or a veterinary record. Its space association gives the name a bright edge, while the ending keeps it softer than a clipped, one-syllable choice. Try writing Nova beside your surname if you enjoy seeing how a pet’s full name will look on paperwork. For a coordinated accessory, a simple star motif is enough; the name already carries the theme. Nova could suit a quiet observer as readily as an enthusiastic greeter. Choose it because you enjoy the sound, rather than expecting the name to describe every side of your dog.
4.) Comet for a playful everyday name
Comet has an unmistakable space theme and a friendly, slightly mischievous sound. It makes a cheerful alternative to grander astronomical names if you prefer something that feels at home beside a muddy pair of walking boots. The two syllables look balanced in simple lettering, and a small curved trail can make a subtle decorative detail on a name card. A dog does not have to race around to earn this name. The image of a comet is simply the inspiration. If your household enjoys lighthearted pet names, Comet offers that playful mood without needing an elaborate spelling or an explanation every time.
5.) Stella for understated starry style
Stella gives the list a classic, human-name option with a starry feel. It is a lovely candidate when you want a space theme that stays fairly subtle in everyday conversation. The double letters make it attractive in a simple handwritten style, perhaps on the label above your dog’s supply basket. Compared with Luna, Stella has a firmer beginning and a slightly more vintage mood. Put both on your shortlist if you like gentle names but want to compare their different sounds. Stella also works without themed accessories, which leaves room for your dog’s own character to become the strongest association with the name.
6.) Cosmo for a cosy cosmic reference
Cosmo feels friendly and a little quirky, with a cosmic reference that does not need a formal astronomical explanation. The repeated rounded sounds give it a pleasantly compact shape when spoken, while the spelling is short enough for an ordinary tag. It would look especially good in clear cream lettering against a deep green or blue background. If you enjoy unusual names that still sound familiar, Cosmo sits comfortably between the two. Consider whether you prefer the full name or the affectionate Cos as your household’s version. Neither requires a matching coat colour, particular breed or a dog with an especially adventurous disposition.
7.) Rocket for a cheerful spaceflight theme
Rocket draws its inspiration from spaceflight rather than the stars themselves. The name has an energetic sound and a touch of comic-book charm, which can be fun even when its owner is happily snoozing on a cushion. A clean block typeface suits it better than a crowded design with multiple spacecraft and planets competing for attention. Rocket is also a useful direction to explore if you like object names but want something beyond familiar food choices. Say the full word naturally before deciding on a nickname. Its appeal is the playful contrast between a big launch-day image and an ordinary companion sharing your home.
8.) Pluto for a familiar astronomical favourite
Pluto offers both an astronomical reference and the warm feel of a familiar pet name. NASA classifies Pluto as a dwarf planet, so it is a good choice if that distant part of the solar system catches your imagination. The name is short on paper but has a rounded, unhurried rhythm when spoken. A tiny dot or simple circle can carry the space theme on a tag without turning the design into a miniature diagram. Pluto does not need to belong to a small dog, either. The association comes from the celestial name, while the everyday meaning will quickly become your particular companion.
9.) Sirius for the Dog Star connection
Sirius has perhaps the most fitting astronomical link on this list: NASA refers to it as the Dog Star. That connection makes it a satisfying choice for someone who wants a little story behind their dog’s name. The spelling is distinctive, although people hearing it aloud may initially think you said serious. Decide whether you find that small wordplay charming before making your choice. A restrained star detail suits the name better than a complicated night-sky scene on a small tag. Keep Sirius in its full form if you enjoy its formal sound, or agree on an affectionate household nickname that feels comfortable to everyone.
Choosing the name you will enjoy using
Choose two or three favourites, then compare how they feel in ordinary conversation. A name you enjoy saying matters more than a perfect match to a coat colour or a themed accessory. Check for overlap with household names and cues, agree on the spelling, and let your dog’s own habits give the choice its personal meaning.
Getting ready for daily life together? Explore our dog sleeping corner ideas and dog walking supply storage ideas.
Sources and further reading
Royal Kennel Club: How to name your dog
NASA Space Place: What are constellations?
NASA Science: The Dog Star, Sirius, and its tiny companion
Images are AI-generated illustrations of everyday dogs, not documentary photographs. The dogs shown are visual inspiration; names are suitable for a variety of appearances.
