The Cherenkov Telescope Array (CTA) is the next-generation ground-based instrument designed to detect very high energy gamma rays, with sites in both the southern and northern hemispheres. Gamma rays are electromagnetic radiation of very high energy, emitted by the hottest and most extreme objects in the Universe — supermassive black holes, supernovae and maybe even remnants of the Big Bang.

https://www.eso.org/public/news/eso1841/

Credit/Courtesy: ESO