Gemini.
Gemini
The twin heroes Castor and Pollux — one mortal, one divine.
May 21 – Jun 20
Gemini · 514 sq° of sky, brightest star Pollux
Gemini (Gemini) covers 514 square degrees of the northern sky in quadrant NQ2. Its two brightest stars, Castor and Pollux, take their names from the mythological twins. Pollux is the brighter of the two and the constellation's nominally brightest star.
Gemini represents the twin heroes Castor and Pollux (the Dioscuri), sons of the Spartan queen Leda.
Their parentage was unusual: Castor was the mortal son of king Tyndareus, while Pollux was the immortal son of Zeus. The brothers sailed with Jason on the Argo, fought beside Achilles at Troy, and were inseparable in life.
"Pollux begged Zeus to share his immortality with Castor, so the brothers might never be parted."
When Castor was killed in a cattle raid, Pollux begged his father to share immortality with his brother. Zeus placed both among the stars together, where they are visible to sailors as a sign of safe weather.
Where this comes from.
Mythology
- Homeric Hymn 33 (To the Dioscuri)
- Apollodorus Bibliotheca 3.11.2
- Aratus Phaenomena 149-156
Paintings & illustrations
- Castor and Pollux — Bernardino Cesari (c. 1610) · Wikimedia · PD
- Gemini — Sidney Hall (engraver), Jehoshaphat Aspin (text) (1825) · Wikimedia · PD
For fun · sources cited. We don’t publish horoscopes, personality readings, or compatibility takes — just astronomy + classical mythology, with public-domain art where available. See all 88 constellations.