Zodiac symbolTwins
Duration (tropical, western)May 20 – June 20 (2024, UT1)[1]
Zodiac elementAir
Zodiac qualityMutable
Sign rulerMercury
ExaltationNorth Node
FallSouth Node

Gemini (♊︎) (/ˈɛmɪn/ JEM-in-eye [2] Greek: Δίδυμοι, romanizedDídymoi, Latin for "twins") is the third astrological sign in the zodiac. Under the tropical zodiac, the sun transits this sign between about May 21 to June 21.[3] Gemini is represented by the twins, Castor and Pollux,[4] known as the Dioscuri in Greek mythology. It is known as a positive, mutable sign.


In Babylonian astronomy, the stars Pollux and Castor were known as the Great Twins. Their names were Lugal-irra and Meslamta-ea, meaning "The Mighty King" and "The One who has arisen from the Underworld". Both names are titles of Nergal. Also could be referencing Zeus and Hades.[5]

In Greek mythology, Gemini is associated with the myth of Castor and Pollux, a pair of twins conceived by different fathers. Zeus, who seduced Leda, conceived Pollux while Tyndareus, the king of Sparta and Leda's husband, conceived Castor. When Castor died, because he was a mortal, Pollux begged his father Zeus to give Castor immortality, which was done through uniting them together in the heavens.

In popular culture

NASA named its two-person space capsule Project Gemini after the zodiac sign because the spacecraft could carry two astronauts.[6]

Google's next-generation AI model announced on December 6, 2023, is named Gemini.[7]


See also


  1. ^ Astronomical Applications Department 2011.
  2. ^ Unicode Consortium 2015.
  3. ^ Britannica n.d.
  4. ^ Oxford 2018, entries for Gemini and Cancer.
  5. ^ White 2008, p. 125.
  6. ^ Humans n.d.
  7. ^ "Introducing Gemini: our largest and most capable AI model". Google. December 6, 2023. Retrieved December 6, 2023.