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cometes
1 Cometes 2 Etoiles filantes 3 astéroïdes 4 Nébuleuses	5 La lune 1 6 Planetes 7 Soleil	8 Terre 9 10 Physique

Une petite tête avec une grande queue .

Elle ne fait plus rêver les foules

depuis que la Télé ne fais plus lever la tête

et que les éclairages urbains éblouissent le ciel.

Hale-Bopp vue de Fontainebleau au dessus de X1

http://www.fli-cam.com/images/comet-liner.jpg

Les photos qui suivent ont été empreintées sur le web

Je ne manquerais pas de citer les sources prochainement.

http://www.jb.man.ac.uk/news/comet/Ikeya-Zhang.jpg

A chance to see Comet Ikeya-Zhang together in the sky with our nearest giant galaxy.

For the past few weeks the brightest comet for nearly 6 years has been visible in the western sky after sunset. On the nights of April 3rd, 4th and 5th it passes through the constellation Andromeda appearing, by chance, in the sky close to a giant spiral galaxy, the Andromeda Nebula, similar to our own Milky Way Galaxy. Should the skies be clear we will thus have a chance of seeing both in the same binocular field of view. Under ideal conditions both the comet, called Ikeya-Zhang after its Japanese and Chinese co-discoverers, and the Andromeda Galaxy would be visible to the unaided eye but, as they are low in the sky, binoculars will be needed.

Comet Ikeya-Zhang photographed by Thomas Balstrup and Lars T. Mikkelsen, students at AGS Amtsgymnasiet in Sonderborg, Denmark. Please quote if used in a newspaper article. Click for a high resolution version

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

http://images.google.fr/imgres?imgurl=http://antwrp.gsfc.nasa.gov/apod/image/9702/sungrazer1_lasco_big.gif&imgrefurl=http://antwrp.gsfc.nasa.gov/apod/ap970226.html&h=1024&w=1024&sz=574&hl=fr&start=8&tbnid=yBRj33uByo0ZxM:&tbnh=150&tbnw=150&prev=/images%3Fq%3Dcomet%26imgsz%3Dxxlarge%26svnum%3D10%26hl%3Dfr%26lr%3D%26sa%3DG

Sungrazer
Credit: LASCO , SOHO Consortium , NRL , ESA , NASA

Explanation : Arcing toward a fiery fate, this Sungrazer comet was recorded by the SOHO spacecraft's Large Angle Spectrometric COronagraph (LASCO) on Dec. 23rd, 1996. LASCO uses an occulting disk, partially visible at the lower right, to block out the otherwise overwhelming solar disk allowing it to image the inner 5 million miles of the relatively faint corona . The comet is seen as its coma enters the bright equatorial solar wind region (oriented vertically). Spots and blemishes on the image are background stars and camera streaks caused by charged particles. Positioned in space to continuously observe the Sun, SOHO has detected 7 sungrazing comets. Based on their orbits, they are believed to belong to a family of comets created by successive break ups from a single large parent comet which passed very near the sun in the twelfth century. The bright comet of 1965, Ikeya-Seki, was also a member of the Sungrazer family, coming within about 400,000 miles of the Sun's surface. Passing so close to the Sun , Sungrazers are subjected to destructive tidal forces along with intense solar heat. This comet, known as SOHO 6, did not survive.