background preloader

Largest star ever discovered, compared to our Sun

Largest star ever discovered, compared to our Sun

The Quest For Life How did life on Earth begin? Is there life beyond our planet? Is there a future for humankind on other planets? This documentary examines the search for life, from its origins on Earth to possibilities in space. The quest for answers takes EXPLORING SPACE to earthly locales ranging from Greenland to the mountains of eastern Mexico, from a French vineyard to a research facility in Japan – as well as deep into outer space. Earth may be a rare environment uniquely designed for nurturing living organisms, but as humans explore the creation of the planet, the realization grows that the answers to the origins of life may lie beyond earthly bounds. Watch the full documentary now (playlist - 2 hours) Space School Neptune Découverte d'une planète de diamant Imaginez un diamant qui fasse cinq fois la taille de la Terre... Ce n'est pas un rêve de joaillier, mais la trouvaille bien réelle d'une équipe de chercheurs, qui a découvert une nouvelle planète qui n'est en fait qu'un gigantesque diamant. Le carbone présent sur la planète en orbite autour d'une étoile à neutrons, aurait crystallisé pour se transformer en diamant, révèlent les chercheurs dans leur étude, parue dans le journal scientifique Science. Et ce n'est pas la seule originalité de cette planète, qui fait donc environ cinq fois la taille de la Terre, rapporte le site Space. L'étoile à neutrons autour de laquelle elle orbite est une pulsar milliseconde, un type d'étoile qui a généralement un compagnon, une autre étoile, en train de mourir, qu'on appelle une naine blanche. Les chercheurs pensent que la planète de diamant était ce compagnon, cette naine blanche. Le chercheur qui dirige l'équipe explique que leur découverte est une déduction logique: publicité Devenez fan sur

Scientist creates lifelike cells out of metal Scientists trying to create artificial life generally work under the assumption that life must be carbon-based, but what if a living thing could be made from another element? One British researcher may have proven that theory, potentially rewriting the book of life. Lee Cronin of the University of Glasgow has created lifelike cells from metal — a feat few believed feasible. Even more remarkable, Cronin has hinted that the metal-based cells may be replicating themselves and evolving. "I am 100 percent positive that we can get evolution to work outside organic biology," he said. The high-functioning "cells" that Cronin has built are constructed from large polyoxometalates derived from a range of metal atoms, like tungsten. The metallic bubbles are certainly cell-like, but are they actually alive? Cronin's team has also created bubbles inside of bubbles, which opens the door to the possibility of developing specialized "organelles." The early results have been encouraging.

Monster of The Milky Way Astronomers are closing in on the proof they’ve sought for years that one of the most destructive objects in the universe - a super massive black hole - lurks at the center of our own galaxy. Could it flare up and consume our entire galactic neighborhood? NOVA takes us on a mind-bending investigation into one of the most bizarre corners of cosmological science: black hole research. From event horizon to singularity, the elusive secrets of supermassive black holes are revealed through stunning computer-generated imagery, including an extraordinary simulation of what it might look like to fall into the belly of such an all-devouring beast. Space, itself, is falling inside the black hole. Watch the full documentary now

Space School - Strange Things Les jeux freinent le déclin mental des gens âgés Si les jeux vidéo sont parfois décrits comme mauvais pour les enfants, ils seraient au contraire bons pour les plus de 50 ans, mobilisant et améliorant leurs facultés cognitives, affirme une étude américaine publiée cette semaine. Les centaines de personnes de plus de 50 ans observées par des chercheurs de l'Université de l'Iowa ont montré des signes d'amélioration de leurs capacités cognitives et de recul de plusieurs années du déclin lié à la vieillesse. Il s'agit de la dernière d'une série d'études qui visent à comprendre pourquoi, en vieillissant, on perd ces fonctions majeures du cerveau qui assurent le fonctionnement de la mémoire, de l'attention, de la perception et de la résolution de problèmes. Dans ce cas, 681 personnes en bonne santé ont été réparties en quatre groupes témoins, à l'intérieur desquels ont également été séparés les 50-64 ans et les plus de 65 ans. Le but est de monter en niveaux de difficulté.

Cosmic Voyage Nominated for an Academy Award, this 36-minute IMAX production offers a state of the art, computer generated journey through the universe, and tries to pinpoint the role of human beings cohabitating within its vastness. Among the topics included are a variety of the greatest scientific theories known to exist - some of which had never before been visualized on film - as well as a guided tour through the cosmos and solar system, and a look at the nature of black holes and exploding supernovas. This IMAX offering presents us with not only one but two journeys - one in space (going from the entire universe to quarks) and one in time (going from the first cells to human beings). These are both monumental enterprises, but unfortunately this half-hour movie can only offer us an inkling of either. Watch the full documentary now

Space School The Sun 300 millions d'ans UFO dents de roues trouvait dans la ville russe de Vladivostok | Observations OVNI hotspot During a cold winter evening a resident of Vladivostok found a rail-shaped metal detail which was pressed in one of the pieces of coal that the man used to heat his home. Mesmerized by his discovery, the responsible citizen decided to seek help from the scientists of Primorye region. After the metal object was studied by the leading experts the man was shocked to learn about the assumed age of his discovery. The metal detail was supposedly 300 million years old and yet the scientists suggest that it was not created by nature but was rather manufactured by someone. The question of who might have made an aluminum gear in the dawn of time remains unanswered. Nowadays, finding a strange artifact in coal is a relatively frequent occurrence. The metal detail which was found by Vladivostok resident is yet another discovery which perplexed the scientists. Another question that interests Russian scientists is whether the aluminum alloy is of Earthly origin.

Cosmos: A Personal Voyage With Cosmos, Carl Sagan and his wife and co-writer, Ann Druyan, brilliantly illustrated the underlying science of his same-titled book, placing the human species within a space-and-time context that brought the infinite into stunningly clear view. The series, which originally aired in 1980 on PBS, has been seen by more than 700 million people worldwide and remains a high-water mark in miniseries history. Sagan lucidly explains such topics as Einstein's theory of relativity, Darwin's theory of evolution, and the greenhouse effect, bringing the mysteries of the universe down to a layman’s level of understanding. The footage in these remastered, seven-DVD or seven-VHS sets is as fresh and riveting as it was two decades ago and is certain to fire the imaginations of a whole new generation of viewers. This is THE GREATEST television series ever. This documentary inspired me to a love of science, learning, and freedom of inquiry that have shaped both my interests and intellectual curiosity.

Space School Pluto

Related: