Caves of Hercules which passes under the Strait of Gibraltar and emerges at St. Michael's Cave in Gibraltar. Legend has it that the Barbary macaques entered the Rock of Gibraltar from Morocco this way. Mythological tradition also holds that the Roman god Hercules stayed and slept in this cave before doing his 11th labour, which was to get golden apples from the Hesperides Garden, which some ancient Greek writers said was located nearby at Lixus. According to some Roman sources, while on his way to the garden of the Hesperides, Hercules had to cross the mountain that was once Atlas. Instead of climbing
Ultimate fate of the universe possible solutions to the equations of general relativity, and each solution implies a possible ultimate fate of the universe. Alexander Friedmann proposed several solutions in 1922, as did Georges Lemaître in 1927. In some of these solutions, the universe has been expanding from an initial singularity which was, essentially, the Big Bang. In 1931, Edwin Hubble published his conclusion, based on his observations of Cepheid variable stars in distant galaxies, that the universe was expanding. From then on, the "beginning" of the universe and its possible "end" have been the subjects of serious scientific investigation. In 1927, Georges Lemaître set