100 Space Baby Names That Are Out of This World Cool 

If you’re in search of truly unique baby names that have a cosmic flair, you’ve come to the right place. The vastness of space offers endless inspiration, whether you’re drawn to the stars, planets, or mythological figures associated with the sky.

From celestial bodies to constellations, there are countless space-inspired names that capture the beauty and mystery of the great unknown. 

Naming your little one after the wonders of outer space is the perfect way to give them a guiding light in this big, wide universe.

Let’s explore some of the brightest, coolest space names for both boys and girls, perfect for any new addition to your family! 

Space-Inspired Baby Names for Boys

​When it comes to space-inspired names for boys, you have a galaxy of options to choose from. Whether you’re drawn to the names of constellations, mythological gods, or even astronauts, these strong, cosmic names will give your little boy a sense of adventure and wonder from day one.

Here are some of the coolest names that are perfect for your future explorer.

Adhara
Derived from an Arabic word, Adhara is the name of a star in the Canis Major constellation. It has a soft, mystical sound, making it one of the more unique space names for a boy, with connections to various cultures.

Aether
In Greek mythology, Aether was the personification of the upper sky, or the highest point of the heavens. This cool space name has an ethereal, cosmic feel, perfect for a little boy with a serene and otherworldly vibe.

Altair
A bright star in the constellation Aquila, Altair has an exotic, adventurous sound. It’s a name of Arabic origin that means “the flying one,” making it perfect for a little boy with an adventurous spirit.

Apollo
A celestial name with ties to both Greek mythology and outer space, Apollo was the Greek god Zeus’ son and is associated with the sun and light. Not to mention, Apollo was the name of NASA’s lunar missions! This name shines brightly, perfect for a future leader.

Arcturus
One of the brightest stars in the sky, Arcturus comes from the Greek word meaning “bear guardian.” It’s a powerful, celestial name with a mythological and protective vibe, perfect for a little boy destined for greatness.

Aries
Aries is a constellation name and the first sign of the zodiac. It represents leadership, strength, and a bold, fiery energy—an ideal name for a baby boy destined to stand out.

Armstrong
Inspired by Neil Armstrong, the first man to walk on the moon, Armstrong is a name that’s both classic and full of cosmic history. It’s a strong, heroic name perfect for a boy who will achieve great things and go beyond limits.

Astraeus
In Greek mythology, Astraeus was the Titan god of the stars and planets, giving this name a strong cosmic connection. It’s a powerful, unique name with a celestial vibe that’s perfect for a little boy who will reach for the stars.

Atlas
A strong name with Greek origin, Atlas was the Titan in Greek mythology who held up the sky. It’s also the name of one of Saturn’s moons. This name has a bold and adventurous vibe, making it a perfect choice for a little boy with the world at his feet—or should we say the universe?

Caelum
This name is derived from the Latin word for “heaven” or “sky” and is also the name of a constellation. It has a soft but strong sound, making it an excellent choice for parents who want a name with both cosmic and classical appeal.

Caelus
Caelus, the Roman god of the sky and chief Roman god equivalent to Uranus in Greek mythology, is a strong and unusual name. With a connection to the heavens and stars, it feels timeless and full of celestial wonder.

Castor
One half of the Gemini twins in Greek mythology, Castor is also a constellation name. It has a strong yet smooth sound, giving it a heroic and classical feel.

Cosmo
If you’re looking for something truly unique, Cosmo fits the bill. This name, which means “order” or “beauty” in Greek, is tied to the vast cosmos of outer space. It’s quirky, fun, and full of character—ideal for a little boy who’s going to make a big impact.

Draco
Inspired by the Draco constellation in the northern sky, this name has a cool, edgy vibe. It means “dragon” in Latin, giving it an air of mystery and fierceness. It’s a cosmic name that’s definitely memorable.

Galileo
After the famous astronomer Galileo Galilei, who studied the stars and planets, this name represents curiosity, exploration, and a love for the cosmos. It’s a distinctive, historical name that still feels fresh and modern.

Helios
Helios, the personification of the sun in Greek mythology, is a striking and powerful name. It radiates warmth and strength, perfect for parents looking for a unique yet ancient name for their little boy with a connection to both outer space and mythology.

Hercules
This name, famous from Greek mythology, is also a constellation in the northern sky. Hercules symbolizes strength and bravery, making it an excellent choice for a boy with a powerful presence.

Indus
Inspired by the Indus constellation, this is a unique, nature-inspired name that connects both earth and sky. It’s short, easy to say, and has a calming, peaceful feel.

Janus
Inspired by the Roman god of beginnings and transitions, Janus has a strong mythological feel. It’s a unique, rare name with a powerful sense of renewal and strength.

Jupiter
Named after the largest planet in the solar system and the chief Roman god, Jupiter has a powerful, majestic sound. It’s an unconventional yet striking name for a boy who’s destined for greatness.

Leo
Inspired by the famous Leo constellation that lights up the northern hemisphere, this is a short but powerful name. Leo, with its Latin origin, means “lion,” representing courage and strength. It’s also the perfect nod to astrology lovers who follow the zodiac!

Lynx
Inspired by the Lynx constellation in the northern hemisphere, this name has a sleek, modern sound with a natural, wild edge. It’s a unique and cool name for a little boy who is destined to stand out.

Mars
Named after the Roman god of war and the famous red planet, Mars is a strong, commanding name with a bold feel. It’s perfect for a little boy who will take on life with energy and determination.

Mercury
Named after the swift Roman god of messages and the closest planet to the sun, Mercury is a sharp, quirky name with a lot of personality. It’s great for parents looking for something bold and out of the ordinary.

Neil
A subtle space nod, Neil, after Neil Armstrong, the first man on the moon, is a strong name with English origin. It feels both grounded and inspiring—a perfect blend for any little explorer.

Oberon
One of the moons of Uranus, Oberon also has literary roots, being the king of the fairies in Shakespeare’s A Midsummer Night’s Dream. It’s a magical, regal-sounding name with both a celestial and whimsical feel, making it perfect for your little dreamer.

Orion
This one is for the stargazers! Orion is a well-known constellation name in the night sky and also rooted in Greek mythology. Orion was a great hunter, making it a name with both cosmic and adventurous vibes. It’s the perfect baby boyname for parents who love exploring the universe, both literally and figuratively.

Orpheus
A name from Greek mythology, Orpheus was a legendary musician, and his lyre is immortalized in the Lyra constellation. This name has a musical, poetic vibe, perfect for a little boy with a creative soul.

Perseus
In Greek mythology, Perseus was a hero who slayed Medusa, and the Perseus constellation is one of the most well-known in the sky. This name has a noble, heroic feel, perfect for a boy destined for great things.

Phaeton
Phaeton, a figure in Greek mythology, was the son of the sun god Helios. It has a fiery, dynamic sound, making it a fantastic choice for a boy who will shine with energy and charisma.

Phoenix
This name, with roots in Greek mythology, represents the mythical bird that rises from the ashes. It’s also the name of a constellation and has a fiery, bold feel that is both strong and meaningful for a boy who’s destined to rise above challenges.

Pollux
The other half of the Gemini twins in Greek mythology, Pollux is a constellation name that evokes strength and loyalty. It’s a distinctive choice for a boy with a classic yet unique vibe.

Sirius
Known as the brightest star in the night sky, Sirius shines with a strong, commanding presence. This celestial name feels regal and timeless, making it a great option for a little boy who’s sure to light up your life.

Rigel
One of the brightest stars in the Orion constellation, Rigel is a name with an otherworldly, strong sound. It’s a bold choice for a boy with cosmic aspirations.

Tariq
With Arabic origin, Tariq means “morning star” or “he who knocks at the door” and is associated with a bright star in the northern hemisphere. This name has an exotic, strong feel, and is perfect for a boy who will be a trailblazer.

Titan
For those in search of a name that feels truly larger-than-life, Titan is a solid pick. It’s the name of the largest moon of Saturn and, fittingly, comes with a sense of grandeur. Plus, U.S. Olympian Apolo Ohno named his son Titan, so you know it’s a strong choice. Singer Kelly Rowland also names her first son Titan Jewell. 

Vulcan
Named after the Roman god of fire and a hypothetical planet once believed to orbit near the sun, Vulcan is a strong, fiery name with a lot of character. It’s bold and unusual, ideal for parents looking for something truly unique.

Zephyr
With roots in Greek mythology, Zephyr was the god of the west wind, bringing gentle breezes. This cool space name has a light, breezy vibe, perfect for a little boy with a free spirit.

Space Baby Names for Girls

For baby girls, celestial names often evoke beauty, grace, and the mysteries of the night sky. From names inspired by Roman goddesses to the most beautiful stars in the universe, these names are sure to make your little star shine brightly. Take a look at some of the most magical space-themed names for girls.

Alcyone
A Greek nymph and one of the stars in the Pleiades cluster, Alcyone has a melodic, ethereal sound. It’s a unique and beautiful choice for parents who love Greek mythology and the stars.

Alya
Another Arabic name, Alya means “sky” or “heaven,” and it’s also a star in the Serpens constellation. This name has a delicate, graceful sound with a celestial connection, making it a perfect choice for a girl who will rise high.

Andromeda
If you’re looking for a name with grandeur, Andromeda is it. Named after both a princess in Greek mythology and a galaxy, this name feels regal, strong, and full of adventure. It’s a beautiful and bold choice for a girl destined to do great things.

Aquila
Aquila, meaning “eagle” in Latin, is a constellation name that represents power and freedom. This celestial name has a strong, yet graceful sound, perfect for a little girl who’s destined to soar high.

Astra
A short but punchy celestial name, Astra comes from the Latin word for “star.” It’s bold, unique, and definitely one of the coolest space-inspired names out there for your baby girl.

Astrid
With Scandinavian origin, meaning “divinely beautiful,” Astrid also carries cosmic connotations with the stars. It’s a strong, elegant name that’s gaining popularity for its timeless appeal.

Atlas
Although traditionally used for boys, Atlas is gaining popularity as a gender-neutral baby name. With its Greek mythology origins and cosmic connections to Saturn’s moons, Atlas feels bold and adventurous for a girl. It’s a name that suggests strength and resilience, perfect for a little girl ready to explore the world (and beyond). Shay Mitchell named her daughter atlas noa. 

Aurora
Aurora, inspired by the aurora borealis, is a name that feels as magical as the lights in the sky. In Roman mythology, Aurora was the goddess of the dawn, making this name a symbol of new beginnings. It’s elegant and has a soft, graceful sound that feels timeless.

Bellatrix
Bellatrix is a star in the Orion constellation and comes from the Latin word meaning “female warrior.” This name has a strong, bold feel, perfect for a girl who will grow up to be both fierce and graceful.

Callisto
Callisto is one of Jupiter’s moons and a Greek mythological nymph who was transformed into a bear and placed among the stars as the Ursa Major constellation. This name feels adventurous and full of cosmic wonder, perfect for a baby girldestined for greatness.

Carina
This name is inspired by the Carina constellation, which means “keel of a ship” in Latin. It has a soft and feminine sound, with a subtle nod to the stars. It’s perfect for a girl who’s set to navigate the world with grace and strength.

Cassiopeia
Cassiopeia is the name of a constellation that takes the shape of a W in the sky, representing a queen in Greek mythology. This name feels regal and strong, with a magical connection to the stars.

Celeste
A direct nod to the stars, Celeste is derived from the Latin word meaning “heavenly” or “of the sky.” It’s a soft, ethereal name that feels dreamy and full of light, making it perfect for a baby girl destined to shine brightly.

Cressida
A name with both literary and celestial ties, Cressida is a moon of Uranus and also appears in Shakespeare’s works. It has a poetic, romantic sound, making it a lovely name for a little girl with a unique and timeless appeal.

Elara
Elara is one of Jupiter’s moons and a name from Greek mythology. It’s a soft, melodic name with a celestial glow, perfect for a baby girl who will grow up to shine in her own unique way.

Electra
A Greek mythological name, Electra is also associated with the stars in the Pleiades constellation. It’s a sharp, electric name with a bold, dynamic sound. Media personality Carmen Electra adds a modern twist to this space-inspired baby name.

Eris
Eris is the name of a dwarf planet and the Greek goddess of discord. Despite its mythological meaning, Eris feels fresh, modern, and strong, perfect for a girl who is unapologetically herself.

Estella
With Latin origin, meaning “star,” Estella has an elegant, classic feel. It’s a beautiful name that works well for a little starin the making. For parents who want a name that blends space and vintage charm, Estella is a stellar choice.

Galatea
A Greek nymph in mythology, Galatea is associated with beauty and the sea, but it also has cosmic connections. It’s a name that feels whimsical and strong, ideal for a baby girl with a vivid imagination.

Halo
Inspired by the glowing aura of plasma that surrounds stars, Halo has a modern, gender-neutral feel. It’s a short and sweet celestial name that carries a sense of brightness and purity.

Io
Short and sweet, Io is the name of one of Jupiter’s moons and a figure from Greek mythology. Despite its short length, this name packs a cosmic punch and is perfect for parents seeking something truly unique.

Leda
Leda is a Greek mythological figure and also the name of one of Jupiter’s moons. It has a gentle, graceful sound, perfect for a baby girl with an aura of serenity and beauty.

Lucina
Derived from the Roman goddess of childbirth and also linked to light, Lucina is a name that radiates warmth and protection. It’s both strong and nurturing, perfect for a girl who will light up your life.

Luna
Derived from the Roman goddess of the moon, Luna is a beautiful, celestial name that has been steadily rising in popularity. With its soothing and dreamy vibe, this name is perfect for a little girl who will be your guiding light. 

Lyra
This is a true gem among space-themed names. Lyra is a constellation name, and in Greek mythology, it represents the lyre of Orpheus. It’s a whimsical, melodic name with a celestial twist, perfect for parents who love Greek mythology and the night sky.

Mae
Inspired by Mae Jemison, the first African American woman to travel to space, this name is a perfect choice for parents who want a name with historical significance and strength. Mae is short, sweet, and filled with inspiration for a baby girlwho will reach new heights.

Maia
Another name rooted in Greek mythology, Maia was a motherly figure and one of the Pleiades, the seven sisters in the sky. It’s a sweet, gentle name with a connection to the stars, and is perfect for parents who want something soft but celestial.

Nashira
A name of Arabic origin, Nashira means “the bearer of good news” and is also a star in the Capricornus constellation. It’s a beautiful, exotic-sounding name with a positive, uplifting meaning.

Nova
Nova, meaning “new” in Latin, is a term for a star that suddenly increases in brightness and then fades. It’s a modern, space-inspired baby name that feels fresh, bold, and full of energy—just like your little one will be.

Nyx
Nyx was the Greek goddess of the night, and this short, punchy name has a dark, mysterious feel. It’s an edgy, cool option for a girl with a strong personality and a connection to the stars.

Ophelia
This moon of Uranus has a timeless elegance. With literary roots in Shakespeare and a celestial connection to the stars, Ophelia is a beautiful, classic name that still feels fresh and modern.

Pandora
A famous figure from Greek mythology, Pandora is also the name of one of Saturn’s moons. This name has a mysterious, magical sound and is perfect for a girl with an adventurous spirit.

Phoebe
A name with ties to both Greek mythology and space, Phoebe is one of Saturn’s moons and also means “bright” or “shining.” It’s a classic name with timeless appeal and a celestial twist.

Rhea
Rhea is both a Titaness in Greek mythology and one of Saturn’s moons. It’s a gentle, elegant name with a strong mythological tie, perfect for a little girl with both strength and grace.

Selene
A Greek name, Selene means “moon” and represents the Greek goddess who personified the moon itself. This space-inspired name is perfect for a baby girl destined to shine, with a poetic and romantic feel that evokes images of moonlit nights.

Seraphina
With connections to angels and the heavens, Seraphina comes from the Hebrew word for “fiery ones” and represents an aura of plasma around the sun. It’s a strong, elegant, and celestial name perfect for a baby girl with a powerful presence.

Seren
This beautiful name means “star” in Welsh, giving it a direct celestial connection. Seren has a soft, lyrical feel, making it a perfect choice for a baby girl who will be your guiding light.

Sol
Short and simple, Sol is derived from the Latin word for “sun.” It has a bright, warm vibe and is perfect for parents who want a name that’s easy to say but packed with meaning.

Soleil
Meaning “sun” in French, Soleil has a bright, warm vibe. It’s an elegant and unique choice for a girl who will light up your life, with a fun twist of being a celestial name as well.

Stella
Derived from the Latin word for “star,” Stella is one of the most beautiful and classic celestial names. It’s a timeless, elegant choice for a little girl who will shine brightly in your life.

Tara
A name with cosmic and cultural ties, Tara means “star” in Sanskrit and is also the name of a Hindu goddess. It’s a short, sweet name that feels bright and full of light.

Thalassa
A name with ties to both the sea and stars, Thalassa means “the sea” in Greek and is also a moon of Neptune. It has a mystical, flowing sound, perfect for a girl with a serene, yet powerful presence.

Theia
Theia is another Greek goddess name, known as the mother of the sun, moon, and dawn. It’s a name filled with light and beauty, perfect for a little girl who’s going to illuminate the world around her.

Vega
Vega is one of the brightest stars in the night sky and is part of the constellation Aquila in the northern hemisphere. It’s a sharp, modern-sounding name with a cosmic vibe that makes it feel both edgy and timeless.

Vela
A constellation name meaning “sail” in Latin, Vela is a short, lovely name with a soft, yet adventurous sound. It’s perfect for a little girl destined to navigate the world with grace.

Vesper
Derived from the Latin word for evening star, Vesper is a name filled with celestial charm. It has a mysterious, graceful feel that’s perfect for a little girl who will bring peace and light into the world.

These names offer a blend of mythological, celestial, and cultural influences, providing some really cool space names for your perfect little star!

Naming your child is an exciting process, and choosing a name with cosmic significance can make it even more special. These names are inspired by everything from mythological gods to the most luminous celestial bodies in the solar system, offering a perfect mix of strength, beauty, and wonder.

Whether you’re a lover of all things Greek or fascinated by the stars, these names are sure to inspire and give your baby a perfect name that’s as out-of-this-world as they are!

Related: Moon and Stars Nursery Decor Ideas

Moon and Stars Nursery Decor Ideas

More Baby Name Lists

If you enjoyed our astrology baby names and are looking for even more unique name inspiration, check out our other baby name lists that cover a variety of themes, origins, and cultures. From gender-neutral names to those with mythological roots, you’ll find the perfect moniker for your new addition!

• 125 Brilliant Baby Names that Mean Light 
• 50 Dark Baby Names That Mean Grief
• 55 Angelic Baby Girl Names That Mean Angel
• 160+ Beautiful Nature Baby Girl Names
• 160 Bold And Brave Baby Names That Mean Warrior

125 Brilliant Baby Names that Mean Light 

160 Bold And Brave Baby Names That Mean Warrior

And if you found this post helpful, we’d love for you to share it! Help other parents find their perfect space baby name by spreading the word. Happy name hunting!