Antarctica will receive microwave and will be used to make a map of the distribution of matter in the universe, but it will take five years to build. But that of Namibia is already underway. The first of the family of 4 started working in September with the aim of studying the gamma rays that arrive on Earth. Telescopes will form the most powerful system so far, and expect astronomers to better understand the extreme environments of the universe, such as pulsars or remnants of supernova explosions.