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Les dossiers de l'astronomie

Les dossiers de l'astronomie

http://www.astrofiles.net/

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Astronomie - MESSENGER arrive aux abords de Mercure - AstroSurf Envoyé 03-01-2008 19:42 j'ai relevé ces precisions sur le site, où il s'avère que c'est bien pour diminuer la vitesse de la sonde afin qu'elle soit capturée par Mercure...Mais ça ne répond pas tout à fait à la question : pourquoi peut-on envoyer directement une sonde en orbite de Mars et pas de Mercure ? Rôle joué par le Soleil, faible masse de Mercure ?? "5. Why take such a long and complex route to Mercury?

MARS Rover Virtual Reality Panoramic images - 360 degree QTVR Photos from panoramas.dk A Great Place to Watch the Weather - Dust devils The martian wind sends hundreds of dust devils spinning across the surface of the planet. From Spirit's high perch approximately 90 meters (295 feet) above the surrounding plains, as shown in this image taken from the summit of "Husband Hill," three dust devils are clearly visible in the plains of Gusev Crater. European Homepage In April of this year, the NASA/ESA Hubble Space Telescope will be celebrating 24 years of observing. To celebrate this milestone, the observatory is releasing a brand new image of part of NGC 2174, otherwise known as the Monkey Head nebula. This new Hubblecast episode showcases this beautiful image, which views a colourful region filled with young stars embedded within bright wisps of cosmic gas and dust. Welcome to the Hubblecast!

Seeing Equinoxes and Solstices from Space acquired December 21, 2010 - September 20, 2011 acquired December 21, 2010download large winter solstice image (1 MB, JPEG, 3712x3712) acquired March 20, 2011download large spring equinox image (1 MB, JPEG, 3712x3712) acquired June 21, 2011download large summer solstice image (1 MB, JPEG, 3712x3712) acquired September 20, 2011download large fall equinox image (1 MB, JPEG, 3712x3712) acquired September 19, 2010 - September 19, 2011download web resolution animation (6 MB, QuickTime)

NASA - Astronaut Biographies The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. The term "cosmonaut" refers to those space sailors who are members of the Russian space program. 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. 2016 April 15 Mercury and Crescent Moon Set Image Credit & Copyright: Miguel Claro (TWAN, Dark Sky Alqueva) Explanation: Innermost planet Mercury and a thin crescent Moon are never found far from the Sun in planet Earth's skies.

Apollo 11-17 First man on the Moon - Apollo Moon Landings - QTVR photos from panoramas.dk Less known is that during all the missions they made image sequences which with today's computer technics can be stitched together into 360o interactive panoramas giving you the possibility to view the moon almost as you were there. Many of these panoramas have been published before but in low resolution and displayed in small sizes. Film used on the Moon was a modified Kodak Ectachrome 160. During the last years (2000-2005) the original films have been re-scanned in high resolution and the Apollo 11 images were released the week before the 35 year anniversary.

La Silla La Silla, in the southern part of the Atacama desert, 600 km north of Santiago de Chile and at an altitude of 2400 metres is the home of ESO's original observing site. Here ESO operates two major telescopes: the 3.6m telescope, and the New Technology Telescope (NTT). They are equipped with state of the art instruments either built completely by ESO or by external consortia, with substantial contribution by ESO. La Silla Observatory is hosting regularly Visitor Instruments that are attached to a telescope, for the duration of a run of observation and then is removed from the telescope.

The Gateway to Astronaut Photography of Earth From Night to Day to Night Again This video was taken by the crew of Expedition 34 on board the International Space Station. The sequence of shots was taken on January 3, 2013 from 11:43:46 to 15:49:31 GMT, on a pass from northwestern Australia, making two complete orbits to eastern Quebec, near the Gulf of St. Asteroids Asteroids General Information Missions to Asteroids Current and Past Missions 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. 2017 February 24 No One Wants to Live in My 'Elysium'-Style Simulation Orbital Space Colony They will also be a pain in the ass to run. And I speak from experience on this because I briefly governed my own orbital colony. My time in command did not end well. Joe Strout gave me the opportunity to fail.

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