Copernicus Chamber Orchestra & Horst Sohm - Handel - "Sarabande in D minor" - Video - Music - Live

"Sarabande in D minor" 

In the Heart of the Tarantula Nebula - Astronomy picture of the day - 2018 May 20

In the Heart of the Tarantula Nebula 
Image Credit: ESA, NASA, Hubble, ESO; Processing: Danny LaCrue

Explanation: In the heart of monstrous Tarantula Nebula lies huge bubbles of energetic gas, long filaments of dark dust, and unusually massive stars. In the center of this heart, is a knot of stars so dense that it was once thought to be a single star. This star cluster, labeled as R136 or NGC 2070, is visible just above the center of the featured image and home to a great number of hot young stars. The energetic light from these stars continually ionizes nebula gas, while their energetic particle wind blows bubbles and defines intricate filaments. The representative-color picture, a digital synthesis of images from the NASA/ESA orbiting Hubble Space Telescope and ESO's ground-based New Technology Telescope, shows great details of the LMC nebula's tumultuous center. The Tarantula Nebula, also known as the 30 Doradus nebula, is one of the largest star-formation regions known, and has been creating unusually strong episodes of star formation every few million years.

Reflections of Venus and Moon - Astronomy picture of the day - 2018 May 19

Reflections of Venus and Moon 
Image Credit & Copyright: Filippo Curti (Sanderphil Urban Observatory)

Explanation: Posing near the western horizon, a brilliant evening star and slender young crescent shared reflections in a calm sea last Thursday after sunset. Recorded in this snapshot from the Atlantic beach at Santa Marinella near Rome, Italy, the lovely celestial conjunction of the two brightest beacons in the night sky could be enjoyed around the world. Seaside, light reflected by briefly horizontal surfaces of the gentle waves forms the shimmering columns across the water. Similar reflections by fluttering atmospheric ice crystals can create sometimes mysterious pillars of light. Of course, earthlight itself visibly illuminates the faint lunar night side.

Mariss Jansons & Vienna Philarmonic - (Tchaïkovsky) - "Sleeping beauty waltz" - Video - Music - Live

"Sleeping beauty waltz"

Comment les radiations provoquent-elles la mort ? - Nucléaire - Texte

Les globules sont faits de molécules dont la plus importante est l'ADN, l'élément génétique qui contient toutes les informations chimiques nécessaires à la reproduction de la vie. Les radiations sont une forme d'énergie. Lorsqu'elles pénètrent dans une cellule, elles peuvent la tuer en détruisant l'ADN qu'elle contient. Chaque jour, pour se maintenir en vie, le corps humain produit quelque 600 milliards de cellules. Lorsqu'elle est touchée par les radiations, la moelle osseuse est lésée et l'organisme cesse de remplacer les cellules qui meurent. Au bout de quelques jours, du fait de cette carence, les tissus commencent à se détruire. De plus, les radiations affectent le système immunitaire. Or il est essentiel qu'un équilibre permanent soit maintenu entre nos défenses immunitaires et les innombrables bactéries qui vivent dans notre organisme. En cas de rupture de cet équilibre, les bactéries se répandent dans le sang, entraînant des infections et... la mort.

18 mai 2018

JoanMira

Attack of the Laser Guide Stars - Astronomy picture of the day - 2018 May 17

Attack of the Laser Guide Stars 
Image Credit & License: European Southern Observatory / Gerhard Hudepohl (atacamaphoto.com)

Explanation: Dodging powerful laser beams, a drone captured this stunning aerial view. The confrontation took place above the 8.2 meter diameter Very Large Telescopes of the Paranal Observatory on planet Earth. Firing during a test of the observatory's 4 Laser Guide Star Facility, the lasers are ultimately battling against the blurring effect of atmospheric turbulence by creating artificial guide stars. The guide stars are actually emission from laser excited sodium atoms at high altitudes within the telescopic field of view. Guide star image fluctuations are used in real-time to correct for atmospheric blurring by controlling a deformable mirror in the telescope's optical path. Known as adaptive optics, the technique can produce images at the diffraction limit of the telescope. That's the same sharpness you would get if the telescope were in space.

Robôs sexuais com pênis funcional - Robótica

O anúncio segue o lançamento da Harmony, o primeiro robô sexual feminino capaz de interagir, que foi feito no ano passado. A versão masculina, ainda sem nome, terá todas as especificações de software da Harmony, bem como um pênis biônico.

“Estamos trabalhando em uma versão masculina de um robô de IA“, disse McMullen ao Daily Star Online. “Nós finalmente teremos uma plataforma masculina e feminina disponível“.

Há 20 anos McMullen e sua outra empresa, a RealDoll, vem criando robôs. Atualmente, ele já vende manequins sexuais personalizáveis e com diferentes opções características.

Falando sobre a Harmony, o site do Realbotix apresentou detalhes particulares sobre as características da boneca, cujo lançamento foi uma “revolução” entre os especialistas. O robô é capaz de praticar uma série de expressões faciais, piscar, mover a cabeça e mexer a boca de acordo com os sons que produz. A interface de IA está exclusivamente na cabeça e, portanto, não está claro se a AI poderia controlar seu pênis biônico. “Ela é uma combinação da boneca de alta qualidade com componentes robotizados avançados e é alimentada com a melhor I.A. (Inteligência Artificial) personalizável do mundo, a fim de oferecer a interação mais divertida que você pode ter com uma máquina“, escreveu a Realbotix em seu site.

 

A Harmony recebeu uma série de críticas por parte de cientistas, que consideraram as implicações éticas de se ter relações sexuais com robôs.

Já nas redes sociais, o robô foi visto por muitos como bizarro e assustador, com vários usuários argumentado a ideia de que ele perpetuava comportamentos misóginos sobre sexo e sexualidade. Quanto a versão masculina, as expectativas são de que não seja muito melhor do que a primeira, já que a empresa faz suspense sobre o lançamento e seus detalhes.

[ IFL Science ] [ Foto: Reprodução / IFL Science / Cafemon ]

Un garçon de 13 ans découvre un incroyable trésor - Archéologie

Un garçon de 13 ans et son professeur viennent de faire une fabuleuse découverte au large de la mer Baltique. Un trésor viking remontant à l’ère du célèbre roi danois Harald à la Dent Bleue. Alors qu’ils exploraient l’île de Rügen, armés d’un détecteur de métaux, le jeune Luca Malaschnitschenko et son professeur René Schön ont fait une découverte stupéfiante. Eux qui étaient sortis en quête de quelque artefact archéologique ont trouvé ni plus ni moins qu’un véritable trésor. Selon les experts, il s’agirait de l’une des plus belles trouvailles qui aient été faites dans la région. Un incroyable trésor Des colliers, des perles, des broches, des bracelets, des anneaux et près de 600 pièces d’argent : voilà le contenu du trésor découvert par le jeune élève de treize ans et son enseignant. « C’est la plus grande trouvaille de pièces de ce genre dans la région baltique du Sud-Est », s’exclame le bureau d’archéologie de Mecklembourg-Poméranie-Occidentale. Le butin, découvert en janvier par les deux archéologues amateurs, serait lié à l’ancienne ville viking de Hedeby. Cet établissement, également un important comptoir commercial en son temps, est aujourd’hui situé en Allemagne mais était précédemment rattaché au Sud du Danemark durant le Moyen Âge.

En savoir plus : http://www.maxisciences.com/tresor/un-jeune-garcon-de-13-ans-decouvre-un-fabuleux-tresor-viking-en-allemagne_art40629.html

Copyright © Gentside Découverte

Milky Way vs Airglow Australis - Astronomy picture of the day - 2018 May 17

Milky Way vs Airglow Australis 
Image Credit & Copyright: Yuri Beletsky (Carnegie Las Campanas Observatory, TWAN)

Explanation: Captured last week after sunset on a Chilean autumn night, an exceptional airglow floods this allsky view from Las Campanas Observatory. The airglow was so intense it diminished parts of the Milky Way as it arced horizon to horizon above the high Atacama desert. Originating at an altitude similar to aurorae, the luminous airglow is due to chemiluminescence, the production of light through chemical excitation. Commonly recorded in color by sensitive digital cameras, the airglow emission here is fiery in appearance. It is predominately from atmospheric oxygen atoms at extremely low densities and has often been present during southern hemisphere nights over the last few years. Like the Milky Way, on that dark night the strong airglow was very visible to the eye, but seen without color. Jupiter is brightest celestial beacon though, standing opposite the Sun and near the central bulge of the Milky Way rising above the eastern (top) horizon. The Large and Small Magellanic clouds both shine through the airglow to the lower left of the galactic plane, toward the southern horizon.

Claude Debussy - "Clair de lune" - Slides - Music

"Clair de lune"