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Les galaxies (galaxies)
Les nébuleuses (nebulae)
Les nébuleuses planétaires (planetary nebulae)
Les amas de galaxies (galaxy cluster)
Les amas globulaires (globuar cluster)
Les amas ouvert (open cluster)
Les étoiles (stars)
Les supernova (supernovae)
Les mirages gravitationnels (gravitational lens)
Les exoplanètes (exoplanets)
La voie lactée (Milky Way)
Les illustrations de l'Univers (Universe artist view)]]> en-us Ciel et Espace Photos Gallery 2 RSS Module, version 1.1.0 Sun, 05 Feb 2012 02:29:13 +0100 240 http://www.cieletespacephotos.fr/main.php?g2_view=core.DownloadItem&g2_itemId=28834 http://www.cieletespacephotos.fr/main.php/v/Univers/ http://www.cieletespacephotos.fr/main.php/v/Univers/IllustrUnivers/608-00110-02high.jpg.html http://www.cieletespacephotos.fr/main.php/v/Univers/IllustrUnivers/608-00110-02high.jpg.html
An artist's impression of an accreting X-ray millisecond pulsar. The flowing material from the companion star forms a disk around the neutron star which is truncated at the edge of the pulsar magnetosphere.
Dans l'album Illustration Univers]]> photo Fri, 03 Feb 2012 11:25:19 +0100 http://www.cieletespacephotos.fr/main.php/v/Univers/Galaxies/020-01205-01high.jpg.html http://www.cieletespacephotos.fr/main.php/v/Univers/Galaxies/020-01205-01high.jpg.html
The NASA/ESA Hubble Space Telescope has taken a picture of the barred spiral galaxy NGC 1073, which is found in the constellation of Cetus (The Sea Monster). Our own galaxy, the Milky Way, is thought to be a similar barred spiral, and the study of galaxies such as NGC 1073 can help astronomers learn more about our celestial home.
Dans l'album Les galaxies]]> photo Fri, 03 Feb 2012 11:24:26 +0100 http://www.cieletespacephotos.fr/main.php/v/Univers/Galaxies/020-03607-03high.jpg.html http://www.cieletespacephotos.fr/main.php/v/Univers/Galaxies/020-03607-03high.jpg.html
This image shows the Large Magellanic Cloud galaxy in infrared light as seen by the Herschel Space Observatory, a European Space Agency-led mission with important NASA contributions, and NASA's Spitzer Space Telescope. In the instruments' combined data, this nearby dwarf galaxy looks like a fiery, circular explosion. Rather than fire, however, those ribbons are actually giant ripples of dust spanning tens or hundreds of light-years. Significant fields of star formation are noticeable in the center, just left of center and at right. The brightest center-left region is called 30 Doradus, or the Tarantula Nebula, for its appearance in visible light. The colors in this image indicate temperatures in the dust that permeates the Cloud. Colder regions show where star formation is at its earliest stages or is shut off, while warm expanses point to new stars heating surrounding dust. The coolest areas and objects appear in red, corresponding to infrared light taken up by Herschel's Spectral and Photometric Imaging Receiver at 250 microns, or millionths of a meter. Herschel's Photodetector Array Camera and Spectrometer fills out the mid-temperature bands, shown here in green, at 100 and 160 microns. The warmest spots appear in blue, courtesy of 24- and 70-micron data from Spitzer.
Dans l'album Les galaxies]]> photo Fri, 03 Feb 2012 11:23:00 +0100 http://www.cieletespacephotos.fr/main.php/v/Univers/Galaxies/020-01302-04high.jpg.html http://www.cieletespacephotos.fr/main.php/v/Univers/Galaxies/020-01302-04high.jpg.html
The large face-on grand design spiral galaxy NGC 1232 has undoubtedly interacted in complex ways with its smaller irregular companion galaxy NGC 1232A (seen in the image on the left) and that interaction has left an indelible mark on the larger galaxy. The sweeping spiral arms appear to be "bent" in areas rather than the gently curving structures seen in undisturbed spiral galaxies. This aberration of the arms is likely due to gravitational encounters with NGC 1232A as it orbits the larger spiral. Radiowave studies indicate a large envelope of neutral gas extending well beyond the optical extent of the galaxy. Rotational velocity measurements of the galaxies huge spiral arms suggest a large component of dark matter comprising NGC 1232. NGC1232 spans some 200,000 light years making it almost twice the size of the Milky Way.
Dans l'album Les galaxies]]> photo Fri, 03 Feb 2012 11:23:00 +0100 http://www.cieletespacephotos.fr/main.php/v/Univers/Nebuleuses/017-03480-05high.jpg.html http://www.cieletespacephotos.fr/main.php/v/Univers/Nebuleuses/017-03480-05high.jpg.html
The Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory has imaged a region of star formation called NGC 3324. The intense radiation from several of NGC 3324's massive, blue-white stars has carved out a cavity in the surrounding gas and dust. The ultraviolet radiation from these young hot stars also cause the gas cloud to glow in rich colours. NGC 3324 is located in the southern constellation of Carina (The Keel, part of Jason’s ship the Argo) roughly 7500 light-years from Earth. It is on the northern outskirts of the chaotic environment of the Carina Nebula, which has been sculpted by many other pockets of star formation (eso0905). A rich deposit of gas and dust in the NGC 3324 region fuelled a burst of starbirth there several millions of years ago and led to the creation of several hefty and very hot stars that are prominent in the new picture. Stellar winds and intense radiation from these young stars have blown open a hollow in the surrounding gas and dust. This is most in evidence as the wall of material seen to the centre right of this image. The ultraviolet radiation from the hot young stars knocks electrons out of hydrogen atoms, which are then recaptured, leading to a characteristic crimson-coloured glow as the electrons cascade through the energy levels, showing the extent of the local diffuse gas. Other colours come from other elements, with the characteristic glow from doubly ionised oxygen making the central parts appear greenish-yellow.
Dans l'album Les nébuleuses]]> photo Thu, 02 Feb 2012 17:05:58 +0100 http://www.cieletespacephotos.fr/main.php/v/Univers/Nebuleuses/017-01410-02high.jpg.html http://www.cieletespacephotos.fr/main.php/v/Univers/Nebuleuses/017-01410-02high.jpg.html
Champs large aurtour de la nebuleuse de la Carene. This image is a colour composite made from exposures from the Digitized Sky Survey 2 (DSS2). The field of view is approximately 4.7 x 4.9 degrees.
Dans l'album Les nébuleuses]]> photo Thu, 02 Feb 2012 17:05:58 +0100