Extragalactic planet Extragalactic planet An extragalactic planet, also known as an extragalactic exoplanet, is a star-bound planet, or rogue planet, located outside of the Milky Way galaxy. Due to the huge distances to such worlds, they would be very hard to detect directly. However, indirect evidence suggests that such planets may exist. Nonetheless, the most distant known planets are SWEEPS-11 and SWEEPS-04, located in Sagittarius, approximately 27,710 light-years from the Sun, while the Milky Way is between 100,000–180,000 light years in diameter. This means that even galactic planets located further than that distance have not been detected. A planet with a mass
Beyond Civilization the revolution. Daniel Quinn coined the term "new tribalism", which appears in "", "My Ishmael", and, finally, in the most detail, in "Beyond Civilization". He often discusses the proliferation of this new tribalism in terms of a New Tribal Revolution, analogous to the Industrial Revolution in that it refers to a gradual, sociocultural period of change and creative outpouring as opposed to a single, violent, political uprising. Quinn asserts that new tribalists believe that the tribal model, though not absolutely "perfect", has obviously stood the test of time as the most successful social organization for humans, in alignment with natural