After nearly a decade needed for its development, construction and testing, in recent days the Gemini Planet Imager (GPI) officially came into operation. It’s a huge camera built to take pictures of exoplanets. It was deployed on the Gemini South telescope in Chile, one of the two large twin telescopes with a diameter of 8.1 m (26.9 ft) each that form the Gemini – which means twins – Observatory.