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Photos Du Jour (Pas Nécessairement En Rapport Avec La Moto)


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wow, un U-2 qui vole encore. Quand on pense que même l'avion qui l'a remplacé (SR-71) est à la retraite...

 

Et on a jamais vraiment eu sa vitesse max...........de mémoire, lorsqu'un record de vitesse sortait, le Blackbird faisait un vol et battait le record de vitesse.................sa vitesse était similaire à une balle de .3006...........dans le tapis, si il amorçait un tournant rapide au dessus de Montréal, l'apex de sa courbe était au dessus d'Ottawa. Tout ça pour prendre des photos des ennemis

Édité par Stickboy
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Et on a jamais vraiment eu sa vitesse max...........de mémoire, lorsqu'un record de vitesse sortait, le Blackbird faisait un vol et battait le record de vitesse.................sa vitesse était similaire à une balle de .3006...........dans le tapis, si il amorçait un tournant rapide au dessus de Montréal, l'apex de sa courbe était au dessus d'Ottawa. Tout ça pour prendre des photos des ennemis

En faite, officieusement, la vitesse maximal était établie à mach 3.2 , mais... D'après moi on sais pas tout! :wink:

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Ça vaut la peine

 

 

À quoi ça sert de porter un casque si on l'attache pas em0300

 

 

 

Pour le look !!!!!!

Mais y va revoir ca façon de faire la prochaine run .....

 

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Si la voiture serait garé " a l'endroit", ca ferait peut etre trouver plus vite.

Cool, Je suis encore un enfant! :mrgreen:

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Si la voiture serait garé " a l'endroit", ca ferait peut etre trouver plus vite.

Cool, Je suis encore un enfant! :mrgreen:/>

 

Moizaussi ! En fait....ca fait 21 ans que je suis en 6 ieme annee!

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... moi je l'avais même pas trouvé, à fallu que je lise la réponse em0400

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je l'ai regardé 4 a 5 fois de suite.... Ayoye! Ça du faire mal et j'aurais aimer voir la suite...

oui ça doit!!. je me demande comment ils ont fait pour lever le haut , ça devait être pesant, si c'est ça qu'ils ont fait. Peut-être qu'il ont cassé le haut morceaux par morceaux.

ça du faire mal en ta...!!!

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post-664-0-08472000-1403714808_thumb.jpg

 

Curiosity Self-Portrait at 'Windjana' Drilling Site

 

NASA's Curiosity Mars rover used the camera at the end of its arm in April and May 2014 to take dozens of component images combined into this self-portrait where the rover drilled into a sandstone target called "Windjana." The camera is the Mars Hand Lens Imager (MAHLI), which previously recorded portraits of Curiosity at two other important sites during the mission: "Rock Nest" (http://photojournal....atalog/PIA16468) and "John Klein" (http://photojournal....atalog/PIA16937).

Winjana is within a science waypoint site called "The Kimberley," where sandstone layers with different degrees of resistance to wind erosion are exposed close together.

The view does not include the rover's arm. It does include the hole in Windjana produced by the hammering drill on Curiosity's arm collecting a sample of rock powder from the interior of the rock. The hole is surrounded by grayish cuttings on top of the rock ledge to the left of the rover. The Mast Camera (Mastcam) atop the rover's remote sensing mast is pointed at the drill hole. A Mastcam image of the drill hole from that perspective is at http://mars.jpl.nasa...8E01_DXXX&s=626. The hole is 0.63 inch (1.6 centimeters) in diameter. The rover's wheels are 20 inches (0.5 meter) in diameter.

Most of the component frames of this mosaic view were taken during the 613th Martian day, or sol, of Curiosity's work on Mars (April 27, 2014). Frames showing Windjana after completion of the drilling were taken on Sol 627 (May 12, 2014). The hole was drilled on Sol 621 (May 5, 2014).

MAHLI was built by Malin Space Science Systems, San Diego. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Science Laboratory Project for the NASA Science Mission Directorate, Washington. JPL designed and built the project's Curiosity rover.

> NASA’s Mars Curiosity Rover Marks First Martian Year with Mission Successes

Image Credit: NASA/JPL-Caltech/MSSS

Édité par jflecours
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Galactic Pyrotechnics on Display

 

 

m106.jpg

 

 

A galaxy about 23 million light years away is the site of impressive, ongoing fireworks. Rather than paper, powder and fire, this galactic light show involves a giant black hole, shock waves and vast reservoirs of gas.

This galactic fireworks display is taking place in NGC 4258, also known as M106, a spiral galaxy like the Milky Way. This galaxy is famous, however, for something that our galaxy doesn’t have – two extra spiral arms that glow in X-ray, optical and radio light. These features, or anomalous arms, are not aligned with the plane of the galaxy, but instead intersect with it.

The anomalous arms are seen in this new composite image of NGC 4258, where X-rays from NASA’s Chandra X-ray Observatory are blue, radio data from the NSF’s Karl Jansky Very Large Array are purple, optical data from NASA’s Hubble Space Telescope are yellow and infrared data from NASA’s Spitzer Space Telescope are red.

A new study made with Spitzer shows that shock waves, similar to sonic booms from supersonic planes, are heating large amounts of gas – equivalent to about 10 million suns. What is generating these shock waves? Researchers think that the supermassive black hole at the center of NGC 4258 is producing powerful jets of high-energy particles. These jets strike the disk of the galaxy and generate shock waves. These shock waves, in turn, heat the gas – composed mainly of hydrogen molecules – to thousands of degrees.

The Chandra X-ray image reveals huge bubbles of hot gas above and below the plane of the galaxy. These bubbles indicate that much of the gas that was originally in the disk of the galaxy has been heated and ejected into the outer regions by the jets from the black hole.

The ejection of gas from the disk by the jets has important implications for the fate of this galaxy. Researchers estimate that all of the remaining gas will be ejected within the next 300 million years – very soon on cosmic time scales – unless it is somehow replenished. Because most of the gas in the disk has already been ejected, less gas is available for new stars to form. Indeed, the researchers used Spitzer data to estimate that stars are forming in the central regions of NGC 4258, at a rate which is about ten times less than in the Milky Way galaxy.

The European Space Agency’s Herschel Space Observatory was used to confirm the estimate from Spitzer data of the low star formation rate in the central regions of NGC 4258. Herschel was also used to make an independent estimate of how much gas remains in the center of the galaxy. After allowing for the large boost in infrared emission caused by the shocks, the researchers found that the gas mass is ten times smaller than had been previously estimated.

Because NGC 4258 is relatively close to Earth, astronomers can study how this black hole is affecting its galaxy in great detail. The supermassive black hole at the center of NGC 4258 is about ten times larger than the one in the Milky Way and is consuming material at a faster rate, potentially increasing its impact on the evolution of its host galaxy.

These results were published in the June 20, 2014 issue of The Astrophysical Journal Letters and are available online. The authors are Patrick Ogle, Lauranne Lanz and Philip Appleton from the California Institute of Technology in Pasadena, California.

NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the Chandra program for NASA's Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory in Cambridge, Massachusetts, controls Chandra's science and flight operations.

Image Credit: X-ray: NASA/CXC/Caltech/P.Ogle et al; Optical: NASA/STScI; IR: NASA/JPL-Caltech; Radio: NSF/NRAO/VLA

Édité par jflecours
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Ça , on a pas le droit de dire si on le fait !!! :mrgreen:

 

surtout que c'est dans un refuge faunique....sur une ile, il qu'il faut passer par la gate pour en ressortir....faisable mais trop compliqué.....j'vais me contenter des mergez a Bandit....un délice...

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Y'a 45 ans aujourd'hui...

s69-39961.jpg?itok=LWDBqwSy

 

On July 16, 1969, the huge, 363-feet tall Saturn V rocket launches on the Apollo 11 mission from Pad A, Launch Complex 39, Kennedy Space Center, at 9:32 a.m. EDT. Onboard the Apollo 11 spacecraft are astronauts Neil A. Armstrong, commander; Michael Collins, command module pilot; and Edwin E. Aldrin Jr., lunar module pilot. Apollo 11 was the United States' first lunar landing mission. While astronauts Armstrong and Aldrin descended in the Lunar Module "Eagle" to explore the Sea of Tranquility region of the moon, astronaut Collins remained with the Command and Service Modules "Columbia" in lunar orbit.

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Étant en informatique, je suis tellement impressionné de voir qu'on a envoyé du monde sur la lune avec si "peu" de technologie!

 

pis pour la meme techno dans 10 ans ca va etre sur un telephone tres tres inteligent ...... em1100

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