A group of researchers discovered a very distant galaxy, which is about a thousand times brighter than the Milky Way. As per the researchers, it is the brightest of the submillimetre galaxies, a class of ultraluminous infrared galaxies. To measure this galaxy, the researchers used the Gran Telescopio Canarias (GTC) at the Roque de los Muchachos Observatory (Garfia, La Palma) in Spain.