alhena star,gamma geminorum

Alhena, Gamma Geminorum (γ Gem), is a spectroscopic binary star system located in the northern constellation Gemini. With an apparent magnitude of 1.915, it is the third brightest point of light in Gemini, after Pollux […]


alpha geminorum

Castor, Alpha Geminorum (α Gem), is a sextuple star system located in the constellation Gemini. It is composed of three binary pairs designated Castor A, Castor B and Castor C. The Castor sextet has a […]