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  • Ferlinpimpim
  • On vous prend pour des cons et j'en rajoute une couche...
 De peinture ou de décapant?...
 A vous de choisir.
  • On vous prend pour des cons et j'en rajoute une couche... De peinture ou de décapant?... A vous de choisir.

Le Soleil du jour





























At 12:50 UT
Density: 1.46 p/cm3




30 derniers jours du Soleil



Sat24 Europe


Radar Meteox.com


Prets pour le grand saut?



3 février 2014 1 03 /02 /février /2014 12:41








En bas, au dessus du nuage, on voit faiblement Mercure.

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LLéa 04/02/2014 23:27


Je ne sais quel mot prononcer, tant c'est .... blanc! :) C'est aussi beau, le blanc! :)

Pimpim, il neige dans ton coin?



Ferlinpimpim 05/02/2014 00:40

Du vent, comme prévu....


Le mois sera venteux et frais...


Les dictons ne trompent pas.


Bisous ma puce.

neo 04/02/2014 19:49


Ferlinpimpim 04/02/2014 21:11

Oui, on a ça deux fois par an ( minimum ).... Content que cette fois ci, personne n'ait vu Nibiru.....

neo 04/02/2014 19:48



Somber Betelgeuse shines in Orion’s shoulder. Jupiter nearby

Tonight for February 4, 2014

Courtesy U.S. Naval Observatory

As soon as night falls in February 2014, from any part of Earth, you’ll see the dazzling planet Jupiter in your sky. It’s the brightest starlike object in the sky for most of the night, now
that Venus is up before dawn. Jupiter is now pretty much on line with the stars Betelgeuse and
Rigel in the constellation Orion. Look near Jupiter to see the constellation Orion and his famous
Belt – three stars in a short, straight row.

Betelgeuse is one of the sky’s most famous stars. Kids especially like Betelgeuse, because its name sounds so much like “beetle juice.” The movie by that same name
perpetuated this pronunciation. But astronomers pronounce it differently. We say BET-el-jews. People have described this star as “somber” or sometimes “grandfatherly.” That may be because of
Betelgeuse’s ruddy complexion, which, as a matter of fact, indicates that this star is well into the autumn of its years.

But Betelgeuse is no ordinary red star. It’s a magnificently rare red supergiant. According to Professor Jim Kaler – whose website Stars you should check out – there might be only one red supergiant star like Betelgeuse for every million or so stars in our Milky Way galaxy.

Red Antares is similar to Betelgeuse

By the way, at this time of year, Betelgeuse’s constellation – Orion the Hunter – ascends to its highest point in the heavens around mid-evening, with the Hunter symbolically reaching the
height of his powers. As night passes – with Earth turning eastward under the stars – Orion has his inevitable “fall,” shifting lower into the southwestern sky by late evening. Orion slowly
heads westward throughout the evening hours and plunges beneath the western horizon in the wee hours after midnight.

In early February 2014, the bow of the waxing crescent moon is pointing toward Mercury after sunset. Look for Mercury in the sunset direction, as soon as the sky darkens.

See Mercury in the sunset direction on the evening of February 4. You’ll have all evening and then some to see the dazzling planet Jupiter and starlit constellation Orion the
Hunter. But to catch the waxing crescent moon – and especially the planet Mercury on February 4, 2014, you need to
look low in the sunset direction, starting an hour or so after sunset.

Once you spot the moon, look for Mercury beneath the moon and close to the horizon with the unaided eye or binoculars. The bow of the moon will be pointing toward Mercury, more or less. At
mid-northern latitudes, Mercury sets about 90 minutes after the sun.

Bottom line: The planet Jupiter – the brightest starlike object it the sky until Venus rises before dawn – is easy to spot near the constellation Orion. Meanwhile, the waxing crescent moon is
still acting as a guide to the planet Mercury – the least-often-seen of the bright planets – after sunset.

Looking for a sky almanac? EarthSky recommends…

More on Betelgeuse: Will explode someday

February 2014 guide to the five visible planets

Not too late. Order your 2014 EarthSky Lunar Calendar today!

A planisphere is virtually indispensable for beginning stargazers. Order your EarthSky Planisphere today!



EarthSky’s meteor shower guide for 2014  

Catch young moon and Mercury after sunset February 1

Moon and Mercury in sunset direction on January 31

Moon and Venus will light up morning dawn again on January

Waxing moon in Taurus, heading for the planet Jupiter

neo 04/02/2014 19:47



Brown dwarf weather revealed by surface mapping

For humans, brown dwarf weather will always be rated as “extremely inclement” with temps of 2,000 degrees F (1,100 C) and clouds made of minute droplets of molten iron.

Studies of the brown dwarf system Luhman 16 has resulted in the first surface map of a brown dwarf and measurements of the objects’ atmospheres at different depths. Image via ESO / I.

Astronomers have presented the first detailed study of the atmospheric features – the extraterrestrial weather patterns – of a brown dwarf (an object intermediate between planets and stars).
The results include the first surface map of a brown dwarf and measurements at different wavelengths probing the atmosphere at different depths. They mark the beginning of an era in which
astronomers will be able to compare models for cloud formation on brown dwarfs – and, eventually, on giant gas planets in distant star systems – with observations. The results are published
in the January 30, 2014 issue of the journal Nature and in Astrophysical Journal Letters.

A brown dwarf is a peculiar object: more massive than a planet, but with insufficient mass for the nuclear fusion that powers stars to ignite in the object’s core. The discovery of a brown
dwarf system a mere 6.5 light-years away from the Sun (only two star systems are closer than that!), announced in March 2013, presented astronomers with the opportunity to study such objects
in more detail than ever before.

Now the results of two studies of the new objects, named Luhman 16A and 16B, are in – and promise the start of a new era of research on brown dwarfs.

The first study, led by Ian Crossfield of the Max Planck Institute for Astronomy, presents nothing less than a surface map of Luhman 16B, using a method known as Doppler imaging that has
never before been applied to this type of object. Crossfield explains: “Previous observations have inferred that brown dwarfs have mottled surfaces, but now we can start to directly map them.
What we see is presumably patchy cloud cover, somewhat like we see on Jupiter.”

The maps obtained by Crossfield and his colleagues correspond to very rough versions of satellite weather maps of our home planet. Crossfield adds: “In the future we will be able to watch
cloud patterns form, evolve, and dissipate – eventually, maybe exo-meteorologists will be able to predict whether a visitor to Luhman 16B can expect clear or cloudy skies.”

For humans, however, Brown Dwarf weather will always be rated as “extremely inclement”. At temperatures of about 1100 C, the clouds detected by Crossfield, Biller and their colleagues are
believed to be made of minute droplets of molten iron and various minerals, floating in an atmosphere that is mostly hydrogen.

The second study, led by Beth Biller (now at the University of Edinburgh, and previously at the Max Planck Institute for Astronomy), literally goes to greater depths. As brighter and darker
clouds are moved into view and removed again by a brown dwarf’s rotation, its brightness will change. By simultaneously observing brightness variations at different wavelengths, Biller and
her colleagues were able to reconstruct what happens in different layers of the atmosphere for both Luhman 16A and 16B.

Biller says: “We’ve learned that the weather pattern on these brown dwarfs are quite complex. The cloud structure of the brown dwarf varies quite strongly as a function of atmospheric depth
and cannot be explained with a single layer of clouds.”

The new results are the beginning of new phase of brown dwarf research in which theoreticians construct models for brown dwarf clouds, which they can then test against observations.

Beth Biller adds: “The exciting bit is that this is just the start. With the next generations of telescopes, and in particular the 39 m European Extremely Large Telescope, we will likely see
surface maps of more distant Brown Dwarfs – and eventually, a surface map for a young giant planet.”

Via Max Planck Institute for Astronomy


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