Selene (Σελήνη) is the name of the Greek goddess of the moon — drawn each night across the sky in a chariot pulled by two white horses. She is the sister of Helios (the sun) and Eos (the dawn). The element selenium was named after her by the chemist Berzelius in 1817.
Selene has been quietly available as a girl's name for centuries and has been rising steadily in the 2020s. It now sits in the U.S.
Selene does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Selene reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.