A University of Arizona-led team used a European Southern Observatory telescope in Chile to find the system 340 light years away. Astronomers announced on Thursday the discovery of a strange planet in a faraway solar system that contains not one sun, but three of them. The planet has been named HD 131399Ab.
HD 131399Ab is believed to be about 16 million years old, making it one of the youngest exoplanets discovered to date. With a temperature of 850 kelvins (about 1,070 F or 580 C) and weighing in at an estimated four Jupiter masses it is also one of the coldest and least massive directly imaged exoplanets.
The massive planet would experience triple sunrises and triple sunsets during one season and all daylight in another.