Posted in quotes 20000 stars transition every sec ond from being reach able to being unreachable June 16, 2015 http://www.forbes.com/sites/ethansiegel/2015/06/08/dark-energy-renders-97-of-the-galaxies-in-our-observable-universe-permanently-unreachable/?linkId=14788497 The expansion of the Universe is a key feature of the Big Bang cosmology and is a generic property of the universe we inhabit. Since Edwin Hubble”s observation in 1929, which led to the discovery of the expansion of the Universe, astronomers try to understand the behavior of it. Several models were created up today which shall explain the past and the future expansion: A decelerating universe reaches its current size in the least amount of time. The universe could eventually contract and collapse into a “big crunch” or expand indefinetly. A coasting universe is older than a decelerating universe because it takes more time to reach its present size and expands forever. An accelerating universe on the other hand is older still. The rate of expansion actually increases because of a repulsive force that pushes galaxies apart. Views : 1,148 Related Articles Posted in quotes Trascendental Meditation – Jerry Seinfeld’s 3 keys to a successful life Posted in quotes improving lifestyle Posted in quotes introverts vs extroverts Posted in quotes Relativity versus quantum mechanics – the battle for the universe Posted in quotes The philosophy of Stoicism Posted in quotes Science Says These 9 Tactics Will Help You Win Any Argument Posted in quotes making mistakes Posted in quotes Menas Kafatos – Quantum theory and reality