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domingo, 19 de novembro de 2017

Astronomy picture of the day - 2017 November 19 - NGC 7822: Stars and Dust Pillars in Infrared

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NGC 7822: Stars and Dust Pillars in Infrared 
Image Credit: WISEIRSANASAProcessing & Copyright Francesco Antonucci
Explanation: Young stars themselves are clearing out their nursery in NGC 7822. Within the nebula, bright edges and complex dust sculptures dominate this detailed skyscape taken in infrared light by NASA's Wide Field Infrared Survey Explorer (WISE) satellite. NGC 7822 lies at the edge of a giant molecular cloud toward the northern constellation Cepheus, a glowing star forming region that lies about 3,000 light-years away. The atomic emission of light by the nebula's gas is powered by energetic radiation from the hot stars, whose powerful winds and light also sculpt and erode the denser pillar shapes. Stars could still be forming inside the pillars by gravitational collapse, but as the pillars are eroded away, any forming stars will ultimately be cut off from their reservoir of star stuff. This field spans around 40 light-years at the estimated distance of NGC 7822.

sábado, 18 de novembro de 2017

Article - Portugal : un requin préhistorique découvert par des chercheurs


Le requin-lézard et ses 300 dents./ - Kelvin Aitken - SIPA/VWPics

Les mers et océans de ce monde sont vastes et bien mystérieux. De nombreuses espèces se cachent dans les profondeurs des eaux, et parfois, certains spécimens préhistoriques remontent à la surface. C’est le cas de ce requin-lézard, découvert par des chercheurs au Portugal.

Ce requin-lézard aux 300 dents n’aurait pas évolué depuis au moins 80 millions d’années. Il a été découvert par des chercheurs au Portugal, au large de Portimao. Cette espèce préhistorique semble être sortie tout droit d’un film de science-fiction, et pourtant, l’animal est bien réel.

Un animal discret, vieux d’au moins 80 millions d’années

Le requin-lézard, ou Chlamydoselachus anguineus, est un véritable fossile vivant pour les chercheurs. Toujours selon eux, l’espèce n’aurait pas évolué depuis au moins 80 millions d’années. Il mesure plus d’un mètre, sa tête ressemble à celle d’un serpent, sa gueule ouverte a de quoi effrayer, mais ce sont ses 300 dents qui sont certainement la partie la plus impressionnante de son anatomie.

Cette prise est totalement inédite, puisqu’il est presque impossible de croiser cette créature marine qui vit entre 500 et 1.000 mètres de profondeur sous la mer. Les chercheurs, qui étaient à l’origine sur une toute autre mission, l’ont trouvé à 700 mètres de profondeur.

La Depêche - France

Astronomy picture of the day - 2017 November 18 - Friday, the Moon Smiled

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Friday, the Moon Smiled 
Image Credit & CopyrightTunç Tezel (TWAN)
Explanation: Friday, an old Moon smiled for early morning risers. Its waning sunlit crescent is captured in this atmospheric scene from clear skies near Bursa, Turkey, planet Earth. In the subtle twilight hues nearby celestial lights are Jupiter (top) and Venus shining close to the eastern horizon. But today, Saturday, the Moon will be new and early next week its waxing crescent will follow the setting Sun as it sinks in the west. Then, a young Moon's smile will join Saturn and Mercury in early evening skies.

sexta-feira, 17 de novembro de 2017

Igrejas maravilhosas do Brasil - Igreja de São Francisco – Califórnia – PR

Construída por migrantes mineiros em 1957, a história da Igreja de São Francisco começou juntamente com a cidade de Califórnia, quando o local foi registrado como um município. Hoje é considerada o principal ponto turístico da região, e conhecida por ter uma das maiores torres do Paraná. Seu estilo possui predominância gótica e barroca, com destaque para o mosaico instalado em sua fachada representando o seu padroeiro.

Astronomy picture of the day - 2017 November 17 - Major Fireball Meteor

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Major Fireball Meteor 
Image Credit & CopyrightOllie Taylor
Explanation: The sky glows with soft pinkish colors of fading twilight in this serendipitous mountaintop vista. Taken in subfreezing temperatures, the thoughtfully composed photo shows snowy, rugged peaks seen from a mountain pass on November 14. Below lies the village of La Villa, Alta Badia in Italy's Dolomite Alps. Above the nestled village lights, the constellation Ursa Major hangs over the northern horizon. But most stunning is the intense fireball meteor. It was captured during the camera's exposure by chance as it flashed east to west across the northern horizon, under Ursa Major's familiar Big Dipper asterism. In fact, sightings of this major fireball meteor were widely reported in European skies, the most reported fireball event ever for planet Earth's American Meteor Society and the International Meteor Organization. The meteor's measured track over Germany is consistent with its origin near the active radiant of November's Taurid Meteor Shower. Taurid meteors are associated with dust from Encke's comet.

quinta-feira, 16 de novembro de 2017

Grupo Coral de Cantares Regionais de Portel - "Se fores ao Alentejo" - Slides - Musica

"Se fores ao Alentejo"

Igrejas maravilhosas do Brasil - Basílica do Senhor Bom Jesus de Iguape – Iguape -SP


Construída entre os séculos, XVIII e XIX, a Basílica do Senhor Bom Jesus de Iguape demorou 80 anos para ser finalizada. Os materiais incorporados em sua obra, como pedra portuguesa, arga massa e óleo de baleia, juntamente com a riqueza de detalhes de seu interior e sua história, chamam a atenção de qualquer visitante. Várias imagens estão dispostas pela Basílica, entre elas a Nossa Senhora das Neves e Bom Jesus de Iguape, padroeiros do município.

Grandes Pintores Portugueses - José Malhoa - "O fado"

Résultat de recherche d'images pour "ver obras de josé malhoa"
O Fado, 1910

Astronomy picture of the day - 2017 November 15 - The Tarantula Nebula

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The Tarantula Nebula 
Image Credit & CopyrightIgnacio Diaz Bobillo
Explanation: The Tarantula Nebula is more than a thousand light-years in diameter, a giant star forming region within nearby satellite galaxy the Large Magellanic Cloud, about 180 thousand light-years away. The largest, most violent star forming region known in the whole Local Group of galaxies, the cosmic arachnid sprawls across this spectacular view composed with narrowband data centered on emission from ionized hydrogen and oxygen atoms. Within the Tarantula (NGC 2070), intense radiation, stellar winds and supernova shocks from the central young cluster of massive stars, cataloged as R136, energize the nebular glow and shape the spidery filaments. Around the Tarantula are other star forming regions with young star clusters, filaments, and blown-out bubble-shaped clouds. In fact, the frame includes the site of the closest supernova in modern times, SN 1987A, right of center. The rich field of view spans about 1 degree or 2 full moons, in the southern constellation Dorado. But were the Tarantula Nebula closer, say 1,500 light-years distant like the local star forming Orion Nebula, it would take up half the sky.