Daily Archives: May 4, 2013

Episode 448: Missing Martian Lander Found?

Gone but not forgotten, the Russian Mars 3 lander descended to the surface of the red planet in 1971. This first lander on Mars was meant to take images, but it unexpectedly failed and its transmissions were short-lived. Through the power of citizen scientists, the lander may have been found in images from NASA’s Mars Reconnaissance Orbiter. Data from the High Resolution Imaging Science Experiment (HiRISE) appear to have captured objects on the surface of Mars which are consistent with the location, shape and relative positioning of the Mars 3 lander. read more

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Episode 447: Horse of a Different Color

The iconic Horsehead nebula has been the subject of astronomical imagery by amateurs and professionals alike. The region has clouds of ionized hydrogen as well as areas of dark dust that obscure new-forming stars. A new image taken by the Hubble Space Telescope shows new features and hidden stars not seen in the other optical images. A 3D movie of the image gives perspective to the structure of the nebula. read more

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Episode 446: Closest Star System Found in Century

The NASA spacecraft WISE has discovered a pair of stars that is now known to be the third-closest star system to Sun. The last closest system to Earth was discovered in 1916.  The newly discovered star pair is composed of two cool “brown dwarfs” 6.5 light years away from our Sun. read more

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Episode 445: The Disappearing Van Allen Belt

The solar system — especially the inner part — is bathed in charged particles from the Sun and cosmic radiation. Several planets with magnetic fields, including Earth, are somewhat protected from the particles because they become trapped high above the surface by magnetic field lines. The Van Allen belts, discovered in the 1950s, are a pair of radiation belts encircling the Earth. Surprisingly, two new NASA probes discovered a short-lived third belt. read more

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Episode 444: Meteors and Asteroids, Oh My

The impact of a meteorite in Russia in February 2013 and the flyby of asteroid debris highlights that the solar system is full of rocky material. While the asteroid has been observed for some time, the smaller meteorite was unexpected. Many meteorites hit the Earth each year, but these events indicate how important it is to develop international plans for threat avoidance and early warning systems. Meanwhile, researchers are digging through the meteorite remains to see what they can learn. read more

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Episode 443: Life on Mars Once Possible

Rock samples collected in February 2013 by NASA’s Curiosity rover show ancient Mars could have supported living microbes. The rover found the soil contains sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon – all elements critical for life. read more

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Arnaud Montebourg, le sauveur de 85 % des emplois menacés?

Le ministre du Redressement productif affirme dans une interview dans Le Monde avoir, en “une année de combat”, réussi avec son ministère, à sauver près de 85% des emplois menacés, grâce à des politiques de “donnant-donnant” avec les groupes.

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Les chantiers navals de Saint-Nazare pas menacés, selon Bercy

L’activité des chantiers de l’Atlantique n’est pas “menacée” par les décisions de son actionnaire coréen STX, affirme le gouvernement français.

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Solar Plane on Cross-Country US Trip

A Swiss pilot has landed in Phoenix in the southwestern U.S. state of Arizona on the first leg of what is planned as the first cross-country flight of a completely solar-powered plane. read more

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Quel avenir pour les chantiers de l'Atlantique?

L’actionnaire coréen des chantiers navals STX France à Saint-Nazaire a envisagé samedi leur mise en vente. 2050 salariés sont directement concernés. La question de l’augmentation de la part de l’Etat dans le capital est soulevée.

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La société STX envisage de vendre ses chantiers navals en France

Le groupe sud-coréen de construction navale STX, lourdement endetté, envisage de vendre ses chantiers navals en France. Les syndicats, inquièts, réclament la nationalisation des chantiers de Saint-Nazaire.

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Solar-powered Plane Takes Off for Flight Across US

A solar-powered airplane that developers hope to eventually pilot around the world took off early on Friday from San Francisco Bay on the first leg of an attempt to fly across the United States with no fuel but the sun’s energy. read more

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Dailymotion: "Avec 25% des parts, Orange n'aurait pas pu intervenir contre Yahoo"

Sous la pression du gouvernement, Yahoo a renoncé à racheter Dailymotion à Orange. Or l’ancien ministre UMP à l’industrie, Christian Estrosi, estime que c’était potentiellement un bon deal. L’avis d’Arnaud Riverain, co-fondateur du cabinet Greensome Finance.

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L'hydrogène naturel, nouvelle source d'énergie ?

Notre planète émet de l’hydrogène. Une recherche est engagée pour savoir si cet hydrogène naturel pourrait être exploité industriellement, de façon durable, ce qui serait une révolution en matière d’énergie.

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