| Piú viste - The Universe Inside |
SOL219-MF-LXTT.jpgWinter Sunset (by Dr M. Faccin - Lunexit Team)59 visitenessun commentoMareKromium
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Retrograde_Mars-TT-2010.jpgRetrograde Mars59 visiteDa "NASA - Picture of the Day" del giorno 13 Giugno 2010:"Why would Mars appear to move backwards? Most of the time, the apparent motion of Mars in Earth's Sky is in one direction, slow but steady in front of the far distant stars. About every two years, however, the Earth passes Mars as they orbit around the Sun. During the most recent such pass late last year and early this year, Mars as usual, loomed large and bright.
Also during this time, Mars appeared to move backwards in the sky, a phenomenon called "Retrograde Motion".
Pictured above is a series of images digitally stacked so that all of the stars images coincide. Here, Mars appears to trace out a loop in the sky. At the center of the loop, Earth passed Mars and the retrograde motion was the highest. Retrograde Motion can also be seen for other Planets of the Solar System". MareKromium
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South Polar Halo.jpgSouth Polar Halo58 visiteWhen Sunlight reflects and refracts off of tiny ice crystals in the atmosphere, the result can be ice crystal halos, which are related to rainbows (the latter being produced when Sunlight reflects and refracts from water droplets).
In Antarctica the temperatures are cold and the air is dry, so snow crystals grow very slowly. This slow growth tends to produce very clean hexagonal prisms, which are well suited for producing beautiful atmospheric displays. The example here is a South Pole halo, showing a rich variety of arcs and halos.
Halos arise from the way minute ice crystals in the atmosphere scatter Sunlight (or Moonlight!) into different angles.
The quality of a halo depends on the type and quality of the ice crystals that produce it.
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SOL694-2P187972203EFFAKBAP0050L7M1~0.jpgDawn on Mars58 visitenessun commento
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Morning.jpgThe Pink-fingered Dawn...58 visiteMareKromium
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Earth_Eclipse.jpgThe "Diamond Ring"...from the Moon!58 visiteUno splendido montaggio che ci mostra una ipotetica veduta dalla Luna di un Eclisse Totale di Sole. Bellissima ricostruzione, davvero, ma...c'è un errore davvero grande in questa "Scena di fantasia": durante una eclissi totale di Sole (ed anche nel momento in cui si forma l'Anello di Diamante - come in questa immagine) la superficie della Luna si troverebbe immersa nella più totale oscurità e quindi risulterebbe ai nostri occhi solo appena distinguibile, in forma di vaghe e quasi indefinibili ombre scure, con le stelle ben visibili nel cielo.
Ma va bene lo stesso...
Caption NASA:"Parts of Saturday's (March 3) lunar eclipse will be widely visible. For example, skywatchers in Europe, Africa, and western Asia will be able to see the entire spectacle of the Moon gliding through Earth's shadow, but in eastern North America the Moon will rise already in its total eclipse phase. Of course if you traveled to the Moon's near side, you could see the same event as a solar eclipse, with the disk of our fair planet Earth completely blocking out the Sun. For a moon-based observer's view, graphic artist Hana Gartstein (Haifa, Israel) offers this composite illustration. In the cropped version of her picture, an Apollo 17 image of Earth is surrounded with a red-tinted haze as sunlight streams through the planet's dusty atmosphere. Earth's night side remains faintly visible, still illuminated by the dark, reddened Moon, but the disk of the Earth would appear almost four times the size of the Sun's disk, so the faint corona surrounding the Sun would be largely obscured. At the upper left, the Sun itself is just emerging from behind the Earth's limb".MareKromium
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The_Moon_and_Saturn.jpgSo close, and yet, so far...58 visite"...A Verbal Art like Poetry is reflective: it stops to think. Music is immediate: it goes on to become..."
W.H. Auden (1907 - 1973) - "Music and Imagination" (1952)MareKromium
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CloudsandStars.jpgIn the twilights...58 visitenessun commentoMareKromium
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StairWaytoHaeven.jpgStairway to Haeven...58 visite"...Ciò che mi muove, in questa Vita, è la curiosità.
La curiosità di "vedere che cosa c'è oltre".
Oltre questa Terra, questo Mare, questo Cielo...Oltre questo Oggi ed oltre il Domani che verrà.
Oltre le nostre idee, le nostre paure, le nostre ipotesi e le nostre convinzioni.
Ti faccio un esempio: se, un giorno, mi capitasse di imbattermi in una scala che, poggiata sulla terra nuda, si alza verso l'Infinito, non credo che mi porrei troppe domande sulla sua Origine ed i suoi Scopi.
Penso che la guarderei, per qualche istante, e poi inizierei a salire, così, un gradino dopo l'altro, senza guardare giù...
Così: tanto per vedere sino a che punto sarei capace di arrivare, prima di sentire un brivido scorrere lungo la schiena ed il collo, e quindi rendermi conto che il mio Tempo, al pari del mio Cammino, è finito..."
P.C. Floegers - "Conversations"MareKromium
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SOL1329-2P244351741EFFAVAQP2285R1M1-3.jpgMartian Sunshine (Fantasy; elab. Lunexit)58 visite"...Semper bonus homo tiro est..."
(Marziale)
"...L'uomo buono (nella Vita) è sempre un ingenuo (in balìa dei furbi)..."MareKromium
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CosmicRays.jpgCosmic Rays58 visiteWhere do Cosmic Rays come from? A major step toward answering this century old question may have just come in from the Auger Observatory Project, the world's premier Cosmic Ray Observatory. That high energy fundamental particles are barreling through the Universe has been known for about a century.
Because ultra high energy cosmic rays are so rare and because their extrapolated directions are so imprecise, no progenitor objects have ever been unambiguously implied. New results from Auger, however, indicate that 12 of 15 ultra high energy cosmic rays have sky directions statistically consistent with the positions of nearby active galactic nuclei. These galactic centers are already known to emit great amounts of light and are likely powered by large Black Holes. The Auger results also indicate that the highest energy cosmic rays are protons, since the electric charge of higher energy nuclei would force the Milky Way Galaxy's magnetic field to deflect and effectively erase progenitor source direction. MareKromium
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EyesintheSky-W00037024.jpgLike "Eyes", in the Space of Saturn...58 visite"...Nec te quaesiveris extra..."
(Persio)
"...Non cercarti fuori da te stesso..."MareKromium
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