| Piú viste - The Universe Inside |
Venus_Moon.jpgNight Lovers80 visitenessun commentoMareKromium
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Under_The_Stars.jpgOld Faithful...80 visite
Caption NASA:"You don't have to be at Yellowstone to see a sky this beautiful, but it helps. Only at Yellowstone National Park in Wyoming, USA, would you see the picturesque foreground of the famous "Old Faithful Geyser" erupting in front an already picturesque sky. Old Faithful Geyser, visible in the foreground, is seen propelling a stream of hot water over 30 mt up in the air. This happens predictably for a few minutes about every 90 minutes. Also predictable are the brightest orbs that popular the nighttime sky, although those visible at any one time keep changing. Visible far in the background sky of this mid-June image are the plane of our Milky Way Galaxy on the left, and the bright planet Jupiter on the right. Jupiter is the brightest celestial object in the entire image. Old Faithful has been erupting at least since the late 1800s".
Nota: siamo curiosi di vedere quando la NASA "ipotizzerà" (ironizziamo, poichè le evidenze fotografiche in nostro possesso sono già innumerevoli) che alcuni fenomeni attualmente catalogati come "minicicloni" o "Dust Devils" (DD) sono, in realtà (ed in maniera particolare nelle aree presso-polari), dei geysers.
Geysers che, a volte, eruttano fango e ghiaccio e, altre volte - forse - acqua calda ed idrocarburi.
Staremo a vedere...MareKromium
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UnknownOrigin.jpgUnknown Origin (by Dr Marco Faccin)80 visite"...We are not, what we are;
And we are not, what we seem to be.
We are not, what we do;
And we are not, what we feel and fight for.
We are not, what we say;
And we are not, what we think.
We are not, what we are;
And we are not, what we pretend to be..."
P.C. Floegers - "Repetita Iuvant"MareKromium
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LunarEclipses.jpgEclipses...80 visiteCaption NASA, da "NASA - Picture of the Day", del 29 Febbraio 2008:"Welcome to the extra day in the Gregorian Calendar's leap year 2008! To celebrate, consider this grid of lunar eclipse pictures - starting in leap year 1996 and ending with February's eclipse - with the date in numerical year/month/day format beneath each image. Mostly based on visibility from a site in Turkey, the 3x4 matrix includes 11 of the 13 total lunar eclipses during that period, and fills out the grid with the partial lunar eclipse of September 2006. Still, as the pictures are at the same scale, they illustrate a noticeable variation in the apparent size of the eclipsed Moon caused by the real change in Earth-Moon distance around the Moon's elliptical orbit. The total phases are also seen to differ in color and darkness. Those effects are due to changes in cloud cover and dust content in the atmosphere reddening and refracting sunlight into Earth's shadow. Of course, the next chance to add a total lunar eclipse to this grid will come at the very end of the decade".MareKromium
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Lost.jpgLost...80 visiteWandering through the Evening Sky, on May 4th, 2008, Planet Mars stood in line with Castor and Pollux, the two bright stars of the constellation Gemini.
In this time exposure of the celestial alignment, Mars actually takes on a distinct yellowish hue, contrasting in color with Pollux; a giant star known to have a Jupiter-class planet, and Castor; itself a multiple Star System.
Though in mythology Pollux and Castor are twin brothers, the two stars are physically unrelated and are about 34 and 50 LY distant respectively.
Included in the skyview are Procyon, alpha star of Canis Minor, and famous star cluster M44, also known as the Beehive Cluster. Dust in our own Solar System reflecting sunlight creates the faint band of Zodiacal Light emerging from the lower right corner of the frame. Just put your cursor over the picture for help with identifications.
Of course, bright Mars can still be found in the western evening skies and tonight wanders near the crescent Moon.MareKromium
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The_Moon_and_the_Pleiades.jpgFragments of the Infinite80 visite"...E così Ti vedo, nascosta dietro i Veli di Orione,
E sorridente, come una Stella del Mattino,
Mi guardi, ma lasci che sia io a parlare,
Ti guardo, e lascio che la Notte si spenga,
Amore mio, sei ad un Passo dal mio Cuore,
Che sento pulsare e che potrei toccare,
Ma è un inganno: Tu sei persa nell'Infinito,
Trascorsa l'Alba, di Te non rimarrà più nulla..."
P.C. Floegers - "Poesie"
MareKromium
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BeforeTheMigration-00.jpgMars before the Great Migration (by Roberto Tremolada)80 visitenessun commentoMareKromium
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OldAgeAstronomy.jpgMedieval Astronomy from the "Melk Abbey"80 visiteDa "NASA - Picture of the Day" del giorno 17 Aprile 2009:"Discovered by accident, this manuscript page provides graphical insight to astronomy in medieval times, before the Renaissance and the influence of Nicolaus Copernicus, Tycho de Brahe, Johannes Kepler, and Galileo.
The intriguing page is from the lecture notes on astronomy compiled by the monk Magister Wolfgang de Styria before the year 1490 at Melk Abbey in Austria.
The top panels clearly illustrate the necessary geometry for a lunar (left) and solar eclipse in the Earth-centered Ptolemaic system.
At lower left is a diagram of the Ptolemaic view of the solar system and at the lower right is a chart to calculate the date of Easter Sunday in the Julian calendar.
Text at the upper right explains the movement of the planets according to the Ptolemaic system.
The actual manuscript page is on view at historic Melk Abbey as part of a special exhibition during the International Year of Astronomy".MareKromium
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AlphaCentauriOne.pngUnder Alpha Centauri...80 visitenessun commentoMareKromium
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Earth.pngMother Earth80 visiteDalla Rubrica "NASA - Picture of the Day", del giorno 23 Novembre 2009:"Goodbye Earth!
Earlier this month, ESA's interplanetary Rosetta Spacecraft zoomed past the Earth on its way back across the Solar System.
Pictured above, Earth showed a bright crescent phase featuring the South Pole to the passing rocket ship. Launched from Earth in 2004, Rosetta used the gravity of the Earth to help propel it out past Mars and toward a 2014 rendezvous with Comet Churyumov-Gerasimenko.
Last year, the Robot Spacecraft passed asteroid 2867 Steins, and next year it is scheduled to pass enigmatic asteroid 21 Lutetia. If all goes well, Rosetta will release a probe that will land on the 15-Km diameter comet in 2014". MareKromium
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FL-Anticrepuscolar Rays.jpgInfinite79 visiteCaption NASA originale:"(...) Pictured above are anticrepuscular rays.
To understand them, start by picturing common crepuscular rays that are seen any time that Sunlight pours though scattered clouds. Now although Sunlight indeed travels along straight lines, the projections of these lines onto the spherical sky are great circles. Therefore, the crepuscular rays from a setting (or rising) Sun will appear to re-converge on the other side of the sky.
At the anti-solar point 180° around from the Sun, they are referred to as anticrepuscular rays (...)".
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Aurora_Borealis_-_05.jpgAurora in the Northern Skies79 visitenessun commentoMareKromium
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