Castor's twin in the constellation Gemini. That final x makes this name modern and cool.

The name of the seventh brightest star in the sky, Rigel was chosen by the Danish astronomer, Ejnar Hertzprung, and his wife Henrietta Kapteyn (the daughter of another astronomer) for their daughter back in the early 20th century. Derived for the Arabic Rijil meaning "foot, leg", it appears in the Orion constellation.

Sporadically used for girls, it is more consistently, though quietly, used for boys.

If you've rejected all the names on earth, you might move on to the sixth planet from the sun, also the Roman god of agriculture and plenty, and the origin of Saturday.

Seren is a top girls' name in Wales – and a lovely choice almost unknown elsewhere. Seren, in the Sirona form, was an ancient goddess of the hot springs.

Sidra is an uncommon name shared by a gulf off the coast of Libya. Popular in the Jewish community of North Africa, its Hebrew meaning refers to a weekly reading portion of the Torah. In Arabic, it's the name of a tree, which is an Islamic symbol of the upper limit of heaven.

Yes, it's the name of the brightest star in the sky, but can't you just hear people saying, "Are you serious?" Singer Erykah Badu used it as a middle name for son Seven.

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 is occasionally used for boys too).

Sunniva was an Irish-born saint who fled to Norway, where she hid in an island cave with her followers and eventually died. After miracles were reported on the island, the cave was excavated and Sunniva's intact body was found. Sunniva is the patron saint of Western Norway. Her name would make a fascinating and unusual choice for a modern baby girl, and if her story is a bit grim, you can take refuge in the upbeat nickname Sunny or Sunni.

Talitha appears in the Bible as words Jesus says to awaken a young girl whose parents feared she was dead. It has been used in the US since colonial times. Talitha is also the name of two stars in Ursa Major, where it's related to the Arabic word for "third." Talitha definitely makes a fresh spin on Tabitha or Talisa.

Ursa might be a good choice if you're looking for a bear name for your daughter but want to avoid the She Witch curse placed on Ursula by Disney's The Little Mermaid. Too bad, because Ursula is a classic and lovely name, but Ursa has less baggage.

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.

Said to refer to either Jupiter or Venus, either of which would be preferable as a name.

The name of a star in the constellation of Leo, Zosma is an intriguing, celestial choice that could make an unexpected middle name option, especially for babies born under the lion sign. Meaning "belt" or "girdle" in Greek, Zosma (the star) is located at the hip of the of the constellation.