2018-04-05

NGC 289: Swirl in the Southern Sky - Astronomy picture of the day - 2018 April 5

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NGC 289: Swirl in the Southern Sky 
Image Credit & CopyrightAdam BlockChileScope
Explanation: About 70 million light-years distant, gorgeous spiral galaxy NGC 289 is larger than our own Milky Way. Seen nearly face-on, its bright core and colorful central disk give way to remarkably faint, bluish spiral arms. Theextensive arms sweep well over 100 thousand light-years from the galaxy's center. At the lower right in this sharp, telescopic galaxy portrait the main spiral arm seems to encounter a small, fuzzy elliptical companion galaxy interacting with enormous NGC 289. Of course the spiky stars are in the foreground of the scene. They lie within the Milky Way toward the southern constellation Sculptor.

2018-04-04

Le Figaro - Il y a 50 ans, Martin Luther King était assassiné - Articles

"I have a dream": un rêve pour son peuple.

La voix de la non-violence rendue silencieuse. Ce jeudi 4 avril 1968 une terrible nouvelle est relayée par les agences de presse Reuter, A.F.P et A.P: l'assassinat du révérend baptiste Martin Luther King. Passé le choc de cette tragédie, on redoute que ce meurtre n'entraîne des troubles graves. Il est en effet considéré comme «le seul homme capable de freiner la violence» dans un contexte de lutte contre la ségrégation raciale, de propagande raciste, et d'extrémisme de la part de Blancs comme de Noirs. 

La marche sur Washington de juillet 1963, qu'il organise en accord avec des militants modérés, marque le sommet de sa carrière. Deux cent mille personnes autour du monument de Lincoln et sur le haut des marches, devant la statue du président assassiné, le révérend King prononce le plus beau discours de sa vie dans lequel il évoque son rêve, «un rêve profondément enraciné dans le rêve américain»: «Je rêve qu'un jour, sur les collines rousses de Géorgie, les fils des anciens esclaves et les fils des anciens esclavagistes prendront place tous ensemble à la table de la fraternité. […] Je rêve qu'un jour mes quatre petits enfants vivront dans une nation où ils ne seront plus jugés sur la couleur de leur peau, mais sur leurs mérites.»

Le Figaro - France

Astronomy picture of the day - 2018 April 4 - Intrepid Crater on Mars from Opportunity

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Intrepid Crater on Mars from Opportunity 
Image Credit: NASAJPLCornellOpportunity Rover Team,
Explanation: The robotic rover Opportunity sometimes passes small craters on Mars. Pictured here in 2010 is Intrepid Crater, a 20-meter across impact basin slightly larger than Nereus Crater that Opportunity had chanced across previously. The featured image is in approximately true color but horizontally compressed to accommodate a wide angle panorama. Intrepid Crater was named after the lunar module Intrepid that carried Apollo 12 astronauts to Earth's Moon 49 years ago. Beyond Intrepid Crater and past long patches of rusty Martian desert lie peaks from the rim of large Endeavour Crater, visible on the horizon. The Opportunity rover continues to explore Mars, recently surpassing5,000 Martian days on the red planet.

2018-04-03

Portugal - 17 milliards d'€uro pour la Banque - Articles







En dix ans, l’État portugais a injecté plus de 17 milliards d’euros d’argent public pour sauver plusieurs banques. Deux journaux, qui consacrent leur une à cette question, n’ont pas manqué de rappeler que ce coût a été assumé avant tout par les contribuables.

“Entre 2007 et 2017, le soutien de l’État aux banques a dépassé les 17 milliards d’euros”, annonce Destak à sa une ce mardi 3 avril. Soit“1 708 milliard par an” réglé par les contribuables, précise le quotidien gratuit.

C’est une véritable “décennie noire”, estime quant à lui Correio da Manhã sur sa manchette. Le journal le plus lu du pays précise :

Les opérations de renflouement des banques ont pesé 23,7 milliards d’euros dans la dette publique. C’est l’équivalent de 12,3 % du PIB, selon les données divulguées lundi [2 avril] par la banque du Portugal. En fin de compte, cela représente 2 302 euros pour chaque Portugais.”

La dette publique a par ailleurs augmenté de 2,4 milliards en février, alors que l’État a annoncé qu’il allait de nouveau prêter 450 millions à la banque Novo Banco. Dans une tribune au Diário de Notícias, Pedro Filipe Soares, membre de Bloco de Esquerda (Bloc de gauche), regrette que “tout l’argent qui manque au service national de santé soit prêté à une banque privée”.


Vincent Barros
Courrier International - France

Bela Mestre - "Janelas de Alcaçovas" - Aguarelas



O melhor Alentejo do Mundo: Janelas de Alcáçovas (Aguarelas de Bela Mestre)
"Janelas de Alcaçovas"

Astronomy picture of the day - 2018 April 3 - The Milky Way over the Seven Strong Men Rock Formations

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The Milky Way over the Seven Strong Men Rock Formations 
Image Credit & Copyright: Sergei Makurin
Explanation: You may have heard of the Seven Sisters in the sky, but have you heard about the Seven Strong Men on the ground? Located just west of the Ural Mountains, the unusual Manpupuner rock formations are one of theSeven Wonders of Russia. How these ancient 40-meter high pillars formed is yet unknown. The persistent photographer of this featured image battled rough terrain and uncooperative weather to capture these rugged stone towers in winter at night, being finally successful in February of 2014. Utilizing the camera's time delay feature, the photographer holds a flashlight in the foreground near one of the snow-covered pillars. High above, millions of stars shine down, while the band of our Milky Way Galaxy crosses diagonally down from the upper left.

2018-03-31

Astronomy picture of the day - 2018 March 31 - Twilight in a Western Sky

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Twilight in a Western Sky 
Image Credit & CopyrightStan Honda
Explanation: A slender crescent Moon and inner planets Venus and Mercury never wander far from the Sun in planet Earth's skies. In the fading evening twilight of March 18, they line up near the western horizon in this atmospheric skyscape. While the celestial scene was enjoyed around the world, this photo captures the trio, with fainter Mercury at the far right, above the crags of Big Bend National Park in southwest Texas. Tonight the Moon will be full though, and rise opposite the Sun. Look for it high in the sky at midnight, near bright star Spica.

2018-03-30

Astronomy picture of the day - 2018 March 30 - NGC 247 and Friends

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NGC 247 and Friends 
Image Credit & CopyrightCHART32 TeamProcessing - Johannes Schedler
Explanation: About 70,000 light-years across, NGC 247 is a spiral galaxy smaller than our Milky Way. Measured to be only 11 million light-years distant it is nearby though. Tilted nearly edge-on as seen from our perspective, it dominates this telescopic field of view toward the southern constellation Cetus. The pronounced void on one side of the galaxy's disk recalls for some its popular name, the Needle's Eye galaxy. Many background galaxies are visible inthis sharp galaxy portrait, including the remarkable string of four galaxies just below and left of NGC 247 known as Burbidge's Chain. Burbidge's Chain galaxies are about 300 million light-years distant. The deep image even reveals that the two leftmost galaxies in the chain are apparently interacting, joined by a faint bridge of material. NGC 247 itself is part of the Sculptor Group of galaxies along with the shiny spiral NGC 253.

2018-03-29

Astronomy picture of the day - 2018 March 29 - NGC 2023 in the Horsehead's Shadow

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NGC 2023 in the Horsehead's Shadow 
Image Credit & CopyrightSteve Mazlin, Mark Hanson, Warren Keller, Rex Parker, Tommy Tse,
and Peter Proulx (SSRO / PROMPT / CTIO)
Explanation: Carved by a bright young star in Orion's dusty molecular clouds, NGC 2023 is often overlooked in favor of the nearby dramatic silhouette of the Horsehead Nebula. In its own right it is seen as a beautiful star forming emission and reflection nebula though, a mere 1500 light-years distant. Surprisingly colorful and complex filaments are detailed in this rare NGC 2023 portrait. Scattered points of emission are also from the region's Herbig-Haro objects, associated with the energetic jets from newborn stars. The sharp telescopic view spans about 10 light-years at the estimated distance of NGC 2023. Off the right edge of the frame lies the more familiar cosmic Horsehead.

JoanMira - "Era uma vez...as flores" - Fotos

"Era uma vez...as flores"

29-03-2018
JoanMira