Gemini/GPI Image of Exoplanet 51 Eridani b
Discovery image of 51 Eridani b taken in the near-infrared light by the Gemini Planet Imager. The bright central star has been mostly removed by a hardware and software mask to enable the detection of the exoplanet one million times fainter. The newly-discovered planet, named 51 Eridani b (51 Eri b), is located approximately 97 light-years from Earth in the constellation Eridanus. It is only 20 million years old, a mere infant by astronomy standards. The planet orbits its host star, also known as c Eridani or HD 29391, at a distance of about 13 AU (astronomical units) – equivalent to being between Saturn and Uranus in our Solar System.