Dear All,We should talk about astronomy and things in the sky, something we can see and cannot really see.Humans had tried to know the cosmos and the intellectual species, however, the travelling speed has always restricted the interstellar interactions. Interstellar travel would require a high percentage of the speed of light, or huge travel time, lasting from decades to millennia or longer. Even the most optimistic views about interstellar travel see it as only being feasible decades from now.If we come out one clear starlit night to some open space and look up at the sky, at those millions of worlds, the Milky Way. The earth cannot even be called a grain of sand in this infinity. It dissolves and vanishes, and with it, you.And greatly Sir Julian Sorell Huxley FRS said ""Mind" and "matter" appears as two aspects of our unitary mind-bodies. There is no separate supernatural realm: all phenomena are part of one natural process of evolution."BillSpeed of lightLogically, in our universe, the relatively modest speed of 300,000 kilometres per second, the speed of light. Light travels at a constant, c, finite speed of 186,000 mi/sec ( Miles per second: 186000). A traveler, moving at the speed of light, would circum-navigate the equator approximately 7.5 times in one second.Miles per hour: 671 million (6.71×108)Sunlight takes about 8 minutes 17 seconds to travel the average distance from the surface of the Sun to the Earth.astronomical units (AU)Distances between the planets in the Solar System are often measured in astronomical units (AU), defined as the average distance between the Sun and Earth, some 150 million kilometers (93 million miles). Venus, the closest other planet to Earth is (at closest approach) 0.28 AU away. Neptune, the farthest planet from the Sun, is 29.8 AU away. Voyager 1, the farthest man-made object from Earth, is 130.83 AU away.The closest known star Proxima Centauri, however, is some 268,332 AU away, or over 9000 times farther away than Neptune.Voyager 1 is a space probe launched by NASA on September 5, 1977. Part of the Voyager program to study the outer Solar System, Having operated for 38 years, 8 months and 21 days, the spacecraft still communicates with the Deep Space Network to receive routine commands and return data. At a distance of 134 AU (2.00×1010 km) as of May 2016,[3] it is the farthest spacecraft from Earth and the only one in interstellar space.The probe's primary mission objectives included flybys of Jupiter, Saturn, and Saturn's large moon, Titan.After completing its primary mission with the flyby of Saturn on November 20, 1980, Voyager 1 began an extended mission to explore the regions and boundaries of the outer heliosphere. Voyager 1's extended mission is expected to continue until around 2025, when its radioisotope thermoelectric generators will no longer supply enough electric power to operate any of its scientific instruments.Voyager 1 - Wikipedia, the free encyclopediaThere are 59 known stellar systems within 20 light years of the Sun, containing 81 visible stars, considered as the prime targets for interstellar missions:[11]By writing, man has been able to put something of himself beyond death... A row of black marks on a page can move a man to tears, though the bones of him that wrote it are long ago crumbled to dust..."Man in this again stands at the pinnacle of individuality — not in mere length of days, but in having found a means to perpetuate a part of himself in spite of death.By speech first, but far more by writing, man has been able to put something of himself beyond death. In tradition and in books an integral part of the individual persists, for it can influence the minds and actions of other people in different places and at different times. In truth, the whole progress of civilization is based upon this power. Once more the upward progress of terrestrial life towards individuality has found apparently insurmountable obstacles, gross material difficulties before it, but once more through consciousness it finds wings, and, laughing at matter, flies over lightly where it could not climb."The earth was not created; it evolved. So did all the animals and plants that inhabit it, including our human selves, mind and soul as well as brain and body. So did religion."Julian Huxley - WikiquoteSir Julian Sorell Huxley FRS (June 22 1887 – February 14 1975) was an English evolutionary biologist, author, humanist and internationalist.Keep in mind that Einstein’s Special Theory of Relativity states that nothing with mass can go faster than the speed of light. But what about something without mass?Photons, by their very nature, cannot exceed the speed of light, but particles of light are not the only massless entity in the universe. Empty space contains no material substance and therefore, by definition, has no mass.“Since nothing is just empty space or vacuum, it can expand faster than light speed since no material object is breaking the light barrier,” said theoretical astrophysicist Michio Kaku on Big Think. “Therefore, empty space can certainly expand faster than light.”Since nothing with mass can travel faster than light, you can kiss interstellar travel goodbye — at least, in the classical sense of rocketships and flying.Albert Einstein -Theory of Special Relativity, he gave us a new hope for interstellar travel with his General Theory of Relativity in 1916.While Special Relativity wed mass and energy, General Relativity wove space and time together.“The only viable way of breaking the light barrier may be through General Relativity and the warping of space time,” Kaku writes. This warping is what we colloquially call a “wormhole,” which theoretically would let something travel vast distances instantaneously, essentially enabling us to break the cosmic speed limit by travelling great distances in a very short amount of time.Four ways to break the universe's speed limit | Business Insider
Best RegardsBill
Friday 27 May 2016
Speed of light sets the limit of human to know the Cosmos
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