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Voyager - The Interstellar Mission

Voyager - The Interstellar Mission
Pioneers 10 and 11, which preceded Voyager, both carried small metal plaques identifying their time and place of origin for the benefit of any other spacefarers that might find them in the distant future. With this example before them, NASA placed a more ambitious message aboard Voyager 1 and 2-a kind of time capsule, intended to communicate a story of our world to extraterrestrials. The Voyager message is carried by a phonograph record-a 12-inch gold-plated copper disk containing sounds and images selected to portray the diversity of life and culture on Earth. The contents of the record were selected for NASA by a committee chaired by Carl Sagan of Cornell University, et. al. The definitive work about the Voyager record is "Murmurs of Earth" by Executive Director, Carl Sagan, Technical Director, Frank Drake, Creative Director, Ann Druyan, Producer, Timothy Ferris, Designer, Jon Lomberg, and Greetings Organizer, Linda Salzman. Related:  Universe & Multiverse

10 Strange Things About The Universe Space The universe can be a very strange place. While groundbreaking ideas such as quantum theory, relativity and even the Earth going around the Sun might be commonly accepted now, science still continues to show that the universe contains things you might find it difficult to believe, and even more difficult to get your head around. Theoretically, the lowest temperature that can be achieved is absolute zero, exactly ?273.15°C, where the motion of all particles stops completely. One of the properties of a negative-energy vacuum is that light actually travels faster in it than it does in a normal vacuum, something that may one day allow people to travel faster than the speed of light in a kind of negative-energy vacuum bubble. One prediction of Einstein’s theory of general relativity is that when a large object moves, it drags the space-time around it, causing nearby objects to be pulled along as well. Relativity of Simultaneity This is similar to arranging tiles evenly on a floor.

EAAE Eratosthenes Project - Eratosthenes' Experiment Eratosthenes was born in the country we now call Lybia, but in those days was called Cyrene. 19th century reconstruction of Eratosthenes' map of the known world, c.194 BC. Source: Wikipedia Eratosthenes studied in Alexandria and claimed to have also studied for some years in Athens. As chief librarian he read many documents and found out that at the Ancient Egyptian city of Swenet (known in Greek as Syene, and in the modern day as Aswan) that is located near the tropic of Cancer on June there is a well where on certain day of the year the sunlight goes down to the bottom of the well. With this information he measured the circumference of the Earth without leaving Egypt by assuming that Earth was a sphere and that the Sun rays are parallel when they arrive to Earth. Eratosthenes assumed that Earth is a sphere and that the solar rays are parallel when they reach Earth.

Deep Time - Interactive Infographic The Miller/Urey Experiment By the 1950s, scientists were in hot pursuit of the origin of life. Around the world, the scientific community was examining what kind of environment would be needed to allow life to begin. In 1953, Stanley L. Miller and Harold C. Urey, working at the University of Chicago, conducted an experiment which would change the approach of scientific investigation into the origin of life. Miller took molecules which were believed to represent the major components of the early Earth's atmosphere and put them into a closed system The gases they used were methane (CH4), ammonia (NH3), hydrogen (H2), and water (H2O). In 1961, Juan Oro found that amino acids could be made from hydrogen cyanide (HCN) and ammonia in an aqueous solution. These discoveries created a stir within the science community. There has been a recent wave of skepticism concerning Miller's experiment because it is now believed that the early earth's atmosphere did not contain predominantly reductant molecules.

La relativité - 1,2,3,4, dimensions La théorie de la Relativité Concepts fondamentaux Corpus théorique (I) Avant de poursuivre cette initiation à la relativité, il est indispensable d'introduire quelques rudiments de mathématiques afin de fourbir votre esprit avec la meilleure arme intellectuelle qui soit pour comprendre la suite du récit. Il faut en effet à présent définir quelques notions fondamentales, quitte à devoir faire usage d’un peu de symbolique mathématique. Mais n'ayez pas d'inquiétudes, le sujet retiendra votre attention. J’ai tout imaginé pour vous éviter cette partie “dure” du sujet , en tous cas sa partie nettement moins littéraire, c’est-à-dire les définitions du cadre relativiste; mais à mesure que je relisais ce passage tout en le rédigeant, je me suis finalement rendu compte que s’il y avait une chose sur laquelle il fallait bien insister quand on apprend une nouvelle matière, c’était par définition les notions de bases. 1,2, 3, 4 dimensions A lire : Flatland, E.Abbott, 1884 (PDF) Vecteur, champ et tenseur

Dionysus 2 - Greek Mythology Link Here is a god who gives pleasure to mankind: he discovered honey, and the vine and its cultivation, though some say that it was Aristaeus who discovered honey, and that he competed with his honey against the wine of Dionysus 2, Zeus giving the first prize to wine. Dionysus 2 was attended by SATYRS and MAENADS, whom he formed into an army, making a campaign all over the inhabited world as far as India. During his wars, it is told, he arrayed himself in suitable arms and in the skin of panthers, but in times of peace during his festive gatherings, he wore bright-coloured, luxurious, and effeminate garments. It is said that Dionysus 2 loves the panther because it is the most excitable of animals, and leaps like a Maenad. He instructed all men in the knowledge of his rites, and some affirm that King Oeneus 2 of Calydon was the first to receive a vine-plant from Dionysus 2. Semele Childhood Hera persecutes him Lycurgus 1 Pentheus 1 Argos Pirates Ariadne Ariadne's final fate Other loves

Nothingness: Why nothing matters Our pursuit of naught provides profound insights into the nature of reality Read more: "The nature of nothingness" SHAKESPEARE had it right, even in ways he couldn't have imagined. For centuries, scientists have indeed been making much ado about nothing - and with good reason. The modern story of nothing began with a thought experiment dreamed up by Isaac Newton. With that answer, Newton made something out of nothing. The discovery of quantum mechanics took the story of nothing further still. This year's Nobel prize in physics recognises the power of nothing on cosmic scales. The Large Hadron Collider near Geneva, the world's most powerful particle accelerator, is also in the business of probing nothing. Since the time of Newton, we have thus gradually realised that nature has masked the identity of nothing with a Shakespearian deftness. Profile New Scientist Not just a website! More From New Scientist Stuff: A few of your favourite things (New Scientist) More from the web (YouTube)

Viriathus Viriathus Even before they were an ever-expanding empire hell-bent on world domination and the unconditional submission of anything they even remotely perceived as an enemy, the Romans were still pretty colossal jackasses. While this statement can confidently be broadly applied to almost every single dealing between the time that Romulus first suckled a she-wolf and when Mehmet the Conqueror's Turkish forces overran the last bastion of Constantinople nearly two millennia later, the Iberian peninsula is as good a place as any to focus on the good people of Latium and their crush-tastic propensity for violently ruining the lives of everyone in their general vicinity. The whole mess started with a charming little African city called Carthage, and the fact that it's mere existence was enough to send the Roman senate into hysterical bouts of implacable, over-the-top Lou Ferrigno-style blood rages. It doesn't take a political nuclear scientist to figure out what happened next. Links: Wikipedia

The Worlds of David Darling 10 Transformational and Spiritual Aphorisms Throughout the ages, there have been many who have transcended the domain of the ego and had gotten a taste of those delicious higher states of consciousness. Rather than keep their experiential knowledge and wisdom about the higher aspects of existence to themselves, they spread the word to others, be it through spoken word, written works, or other methods. Thanks to the sages, spiritual teachers, and every-day people who had an enlightening experience, we can ignite the light of expanded awareness concerning the higher aspects of the human experience and of existence itself from such people. There are an untold amount of such spiritual aphorisms to be enjoyed by our higher selves so we will take a look at 10 such aphorisms. May these timeless words nourish your mind and soul. Aphorism 1 A human being is a part of a whole, called by us a universe, a part limited in time and space. -Albert Einstein Aphorism 2 “Life is what you make it,” this is very true. -Unknown Aphorism 3 Aphorism 4

How Quantum Suicide Works ­­A man sits down before a gun, which is pointed at his head. This is no ordinary gun; i­t's rigged to a machine that measures the spin of a quantum particle. Each time the trigger is pulled, the spin of the quantum particle -- or quark -- is measured. Depending on the measurement, the gun will either fire, or it won't. Nervously, the man takes a breath and pulls the trigger. Go back in time to the beginning of the experiment. But, wait. This thought experiment is called quantum suicide.

Family tree of the Greek gods Family tree of gods, goddesses and other divine figures from Ancient Greek mythology and Ancient Greek religion The following is a family tree of gods, goddesses and many other divine and semi-divine figures from Ancient Greek mythology and Ancient Greek religion. (The tree does not include creatures; for these, see List of Greek mythological creatures.) Key: The essential Olympians' names are given in bold font. See also List of Greek mythological figures Notes References