| Piú votate - The Universe Inside |
ColorfulReality.jpgEmissions (by Marco Faccin)68 visitenessun commentoMareKromium
(13 voti)
|
|
Lost.jpgLost...78 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
(13 voti)
|
|
Spacer.jpgHappy Easter 2008! (by Giorgio Picciau)75 visiteUn Saluto ed un Augurio "UFO-Roboticamente Spaziali" di Buona Pasqua 2008, a Tutti gli Amici di Lunar Explorer Italia, da parte del bravissimo ed immaginifico "Artista del Cosmo", Giorgio Picciau!
Un grande complimento a Lui, per questa bella e romantica "Visione" che - ne siamo certi - ci riporterà tutti indietro di qualche anno, "...quando le cose erano (forse) più semplici ed i cieli (di certo) erano più limpidi".
MareKromium
(13 voti)
|
|
LunarEclipses.jpgEclipses...79 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
(13 voti)
|
|
The-Red-Moon.jpgEclipsed Moonlight (by Jerry Lodriguss)69 visiteCaption NASA:"Moon watchers blessed with clear skies over the Americas, Europe, Africa and Western Asia enjoyed a total lunar eclipse.
Catching eclipsed moonlight, astroimager Jerry Lodriguss offers this view of the inspiring celestial event with the shadowed Moon accompanied by wandering planet Saturn at the left, and bright Regulus, alpha star of the constellation Leo, above.
The engaging composite picture was made by combining a filtered, telephoto image of the Moon and surrounding starfield with a telescopic exposure. The combination dramatizes the reddened moonlight while clearly showing the variation of brightness and color in Earth's not-so-dark shadow across the lunar surface".MareKromium
(13 voti)
|
|
Peace_of_mind.jpgPeace of Mind65 visiteMareKromium
(13 voti)
|
|
Lunar Eclipse.jpgLunar Eclipse over England77 visiteDa "NASA - Picture of the Day", dell'11 Settembre 2006:"Last Thursday - Sept., 7th, 2006 -, part of our Moon turned dark. The cause, this time, was not a partial lunar phase - the Moon was full - but rather that part of the Moon went into Earth's shadow. The resulting Partial Lunar Eclipse was visible from the Eastern Atlantic Ocean through Europe, Africa and Asia and into the Western Pacific Ocean. The darkest part of the Lunar Eclipse, when part of the Moon was completely shielded from Sunlight, lasted about 90 minutes.
Pictured here, a partially eclipsed Moon is seen rising over an estate in Huddersfield, England. The above image was taken far away from the house in the foreground, as only this would allow it to appear as angularly small as the half-degree Moon far in the background. A setting twilight Sun lit the foreground. The next eclipse of the Moon will occur in March 2007".
(13 voti)
|
|
Aurora.jpgGreen Aurora93 visiteDa "NASA - Picture of the Day" del 6 Settembre 2006:"What if your horizon was green? If you've got a camera, take a picture! That was the experience of Jeff Hapeman last week when visiting the Pictured Rocks National Lakeshore in Michigan. On a quiet night toward the Northern Horizon over Lake Superior was a long lasting diffuse green aurora. The above image was taken in an effort to capture the sense of wonder one gets when watching an auroral display. Auroras are sparked by energetic particles from the Sun impacting the magnetic environment around the Earth. Resultant energetic particles such as electrons and protons rain down near the Earth's poles and impact the air. The impacted air molecules temporarily lose electrons and when oxygen molecules among them reacquire these electrons, they emit green light. Auroras are known to have many shapes and colors".
(13 voti)
|
|
Perseid-1.jpgShooting Star (1)82 visiteL'immagine è sicuramente bella, ma quello che vorremmo farVi notare è la tessitura della striscia lasciata dalla "stella cadente" la quale, come ben si vede (anche senza operare ingrandimenti), contiene "nodi" (modesti rigonfiamenti dovuti, probabilmente, a perdita/consunzione di materiale a seguito dell'attrito durante la caduta del frammento di Corpo Celeste attraverso l'atmosfera) e "brillamenti" (delle vere e proprie "fiammate" che si avviano, di regola, in corrispondenza dei "nodi" e che indicano cambi di temperatura - ergo di luminosità - del Corpo in questione).
(13 voti)
|
|
In The Sunset.jpgRed, red Sunset...78 visitenessun commento
(13 voti)
|
|
EASTER ISLAND PLANETS.jpgArt will outlive the Artist100 visite"...Tutta l'Arte che un Artista potrà mai creare, ora usando pietre ed ora usando ferro, sopravviverà - lungamente - al suo Creatore.
E dunque, se questo è vero, nella nostra Arte Mortale ci deve pur essere, in fondo, almeno una particella dell'Eternità..."
P.C. Floegers - "Conversations for Tomorrow"
(13 voti)
|
|
Sun Halo-2.jpgBright Sun, Dark Sky73 visiteCaption originale:"Have you ever seen a halo around the Sun? This fairly common sight occurs when high thin clouds containing millions of tiny ice crystals cover much of the sky. Each ice crystal acts like a miniature lens. Because most of the crystals have a similar elongated hexagonal shape, light entering one crystal face and exiting through the opposing face refracts 22 degrees, which corresponds to the radius of the Sun Halo. A similar Moon Halo may be visible during the night. The picture was taken in Gunlock, Utah, USA. A flock of birds was caught by chance in the foreground. Exactly how ice-crystals form in clouds remains under investigation".
Nota: si tratta di un'immagine molto bella, senza alcun dubbio, ma una piccola annotazione va fatta. Vedete il colore del cielo attorno al Sole? Vi sembra naturale? No, ovviamente: non è affatto naturale.
Esso è molto scuro, di colore incerto (grigio), molto simile al cielo di Marte (come si vede nei frames NASA). Ma perchè questo "strano cielo" anche sulla Terra? Diciamo che si tratta di una combinazione di fattori (su tutti il - probabile - filtro/colore usato e la circostanza per cui, scattando foto come questa e quindi sovraesponendo il Sole, automaticamente si rende più scuro tutto il resto del paesaggio).
Morale: se non si vedessero degli uccelli in transito, questa bella immagine potrebbe tranquillamente rappresentare un tramonto (o un'alba) su Marte.
La nostra deduzione è che il fatto di credere a quello che si vede in una fotografia (terrestre, marziana o lunare) e commentarlo, sta diventando sempre più una questione di "Fede" e non - purtroppo - di effettiva oggettività.
(13 voti)
|
|
| 476 immagini su 40 pagina(e) |
 |
|
|
|
|
12 | |
|
|
|
|
