Gemini Observatory

Gemini Observatory, observatory consisting of two 8.1-metre (27-foot) telescopes: the Frederick C. Gillett Gemini Telescope (also called Gemini North), located on the dormant volcano Mauna Kea (4,213 metres [13,822 feet]) on the island of Hawaii in the Northern Hemisphere, and Gemini South, located at the Cerro Tololo Inter-American Observatory on Cerro Pachon (2,725 metres [8,940 feet]) in Chile in the Southern Hemisphere. The observatory is named after the constellation Gemini, which represents the twins Castor...