MUSIC - Brahms - Symphonie n°3 - Poco Allegretto

"Poco allegretto"

ASTRONOMY - Winter and Summer on a Little Planet

 2024 November 30

Winter and Summer on a Little Planet
Image Credit & Copyright: Camille Niel

Explanation: Winter and summer appear to come on a single night to this stunning little planet. It's planet Earth of course. The digitally mapped, nadir centered panorama covers 360x180 degrees and is composed of frames recorded during January and July from the Col du Galibier in the French Alps. Stars and nebulae of the northern winter (bottom) and summer Milky Way form the complete arcs traversing the rugged, curved horizon. Cars driving along on the road during a summer night illuminate the 2,642 meter high mountain pass, but snow makes access difficult during winter months except by serious ski touring. Cycling fans will recognize the Col du Galibier as one of the most famous climbs in planet Earth's Tour de France.

ASTRONOMIE - La Voie Lactée au Cervin - Suisse

Le Cervin culmine à 4 478 mètres au-dessus du niveau de la mer, c'est l'une des plus hautes montagnes des Alpes valaisannes en Suisse. En raison de sa silhouette saisissante en forme de pyramide et de son histoire, le Cervin est l'une des montagnes les plus célèbres du monde. C'est le 14 juillet 1865, après diverses tentatives que le britannique Edward Whymper a réussi le premier son ascension.

© Delil Geyik

ASTRONOMY - Messier 4

 2024 November 29

Messier 4
Image Credit & Copyright: Steve Crouch

Explanation: Messier 4 can be found west of bright red-giant star Antares, alpha star of the constellation Scorpius. M4 itself is only just visible from dark sky locations, even though the globular cluster of 100,000 stars or so is a mere 5,500 light-years away. Still, its proximity to prying telescopic eyes makes it a prime target for astronomical explorations. Recent studies have included Hubble observations of M4's pulsating cepheid variable stars, cooling white dwarf stars, and ancient, pulsar orbiting exoplanet PSR B1620-26 b. This sharp image was captured with a small telescope on planet Earth. At M4's estimated distance it spans about 50 light-years across the core of the globular star cluster.

METEOROLOGIE - Vagues nuageuses en Republique Tchèque

Ces nuages d'ondes de Kelvin-Helmholtz photographiés à Buškovice, en République tchèque, donnent l'impression d'un véritable tsunami dans le ciel : ces vagues nuageuses se forment lorsqu'une masse d'air chaud circule au-dessus d'une masse d'air froid, créant de l'instabilité.

FuturaSciences

ASTRONOMY - NGC 206 and the Star Clouds of Andromeda

 2024 November 28

NGC 206 and the Star Clouds of Andromeda
Image Credit & Copyright: Roberto Marinoni

Explanation: The large stellar association cataloged as NGC 206 is nestled within the dusty arms of the neighboring Andromeda galaxy along with the galaxy's pinkish star-forming regions. Also known as M31, the spiral galaxy is a mere 2.5 million light-years away. NGC 206 is found at the center of this sharp and detailed close-up of the southwestern extent of Andromeda's disk. The bright, blue stars of NGC 206 indicate its youth. In fact, its youngest massive stars are less than 10 million years old. Much larger than the open or galactic clusters of young stars in the disk of our Milky Way galaxy, NGC 206 spans about 4,000 light-years. That's comparable in size to the giant stellar nurseries NGC 604 in nearby spiral M33 and the Tarantula Nebula in the Large Magellanic Cloud.

METEOROLOGIE - Arcus sur l'île de Pag en Croatie.

Cet arcus très impressionnant a été photographié sur l'île de Pag en Croatie : ce rouleau nuageux déchiqueté se présente à l'avant des orages et annonce l'arrivée de phénomènes météo violents. 

© Danijel Palčić

ASTRONOMY - The Meteor and the Comet

 2024 November 27

The Meteor and the Comet
Image Credit & Copyright: Wang Hao; Processing: Song Wentao

Explanation: How different are these two streaks? The streak on the upper right is Comet Tsuchinshan-Atlas showing an impressive dust tail. The comet is a large and dirty iceberg that entered the inner Solar System and is shedding gas and dust as it is warmed by the Sun's light. The streak on the lower left is a meteor showing an impressive evaporation trail. The meteor is a small and cold rock that entered the Earth's atmosphere and is shedding gas and dust as it is warmed by molecular collisions. The meteor was likely once part of a comet or asteroid -- perhaps later composing part of its tail. The meteor was gone in a flash and was only caught by coincidence during a series of exposures documenting the comet's long tail. The featured image was captured just over a month ago from Sichuan Province in China.

METEOROLOGIE - Une tornade monstrueuse

« Monster tornado ». © Adam Orgler

Une tornade monstrueuse « Monster tornado » prise en photo en Iowa (États-Unis).

METEOROLOGIE - Arc-en-ciel vaporeux en Antarctique

Cet arc-en-ciel blanc, photographié en Antarctique, est typique des situations de brume ou de brouillard dans les régions froides et humides.

FuturaSciences