Leo is a strong-yet-friendly name that was common among the Romans, used for fourteen popes, and is now at its highest point ever in the US thanks in part to Leonardo "Leo" DiCaprio.

Orion is a rising star, with both mythical and celestial overtones.

With its sharp, succinct sounds and cool, laidback style, Eli is a popular choice among parents today. Compact and punchy, it is a Biblical name with plenty of charm.

Nova might be a much more commonly used a girls' name, but enough parents saw unisex appeal in it for it to debut on the US Top 1000 for boys in 2017. Nova is an astronomical term for a star that suddenly increases in brightness, then fades.

The name of the Aster flower, named by the English, was derived from the Greek word for star. Like many floral names, Aster is much more popular among baby girls.

While this is usually thought of as a girls' name because of the Bond Girl connection, its sound is masculine and there's no reason it couldn't work for boys.

Mars is a name with interesting potential, ticking the boxes as a mythological name, a space name, and a single syllable choice ending in -s. For parents wanting something unexpected, Mars could work as an alternative to popular Brooks, Max, Atlas, or Miles - and given to around 124 boys - and 27 girls - in a recent year, it is unusual but recognisable.

Sky is an ambigender nature name that was first legitimized as the character of Sky Masterson in the 1950 musical Guys and Dolls, played in the film version by Marlon Brando. It's a name we appreciate for its clear, wide-open feel, less hippyish than others like Rainbow and Starlight, and makes an appealing middle name possibility.

Similar in sound to Evan and Everett, Ever is an evocative word name that's currently on the rise. Used by Alanis Morissette and Souleye back in 2010, Ever was given to more than 200 boys in 2024, compared to 115 girls.

Seren, meaning "star", is one of the top girls' names in Wales, but as a boys' name it has a different derivation. It's a rare Polish form of the Latin Serenus, mostly used to refer to the Saint and meaning "serene". It could make for a handsome and almost unknown alternative to rising star Soren.

Adventurous parents are starting to look back to names of ancient gods like Mercury, Zeus, and Apollo. This one is also a planet and a metallic element, and has a friendly nickname, Merc. The Roman god Mercury, which derives from the Latin words for trade or wages, is the patron of tradesmen and travelers and the fastest-moving planet in the solar system. Mercury is the planet associated with the sign of Virgo, so this is one of the prime names for Virgo babies.

Jupiter's partner Juno has entered the mainstream, so it's possible that her divine mate could follow. But not necessarily for boys — Jupiter is currently mostly female in the US, thanks to its similarity to Juniper. Stars including Ed Sheeran and Ashley Tisdale recently welcomed daughters named Jupiter, which could shift the balance even more towards the girls.

This cosmological name is given to a handful of boys and girls each year in the USA. Likely to get confused with Stella or Stellan.

This striking name has a lot going for it: it's a self-confident Spanish surname, it identifies one of the most brilliant stars in the sky, and it has a musical reference to singer-songwriter Suzanne Vega.

Solstice graduated from word to official first name when author Lionel Shriver used it for a character in her novel Big Brother. But of course, there were people named Solstice before: 16 baby girls were given the name in the US in 2021, and it was last on the charts for boys in 2018, when six baby boys got the name.

Used more for girls in Europe, but definitely sounds masculine enough for a boy here.

Like a large proportion of traditional Hawaiian names, Hoku can be used for both girls and boys.

The astronomical Polaris is better known as the North Star, the brightest star in the Ursa Minor constellation. It's also the name of a character in the Marvel Universe, the daughter of Magneto.

A melodic name, popular among the African-American community, where it joins sound-alikes Amari, Jamari, and Damari. It ultimately derives from the Arabic Qamar, meaning "moon", and is also used by Swahili speakers and those from Comoros and Somalia. It could also be considered a Greek place name, from a coastal village in Santorini.