JAXA, the Japan Aerospace Exploration Agency, successfully launched Astro-H,a satellite that will collect information about black holes. Euronews reports that the main task of the satellite is studying supermassive black holes that are at the final stage of evolution of massive stars and have a very strong gravitational pull that doesn't even let light through. It is known that their mass can exceed the mass of the Sun by several hundred or million times. However, their formation and development have hardly been studied yet.