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ZO-Westlake3Planets061905.jpgMercury, Venus and Saturn in the Western Sky80 visiteDa "NASA - Picture of the Day" del 24 Giugno 2005: " This weekend three planets will grace the Western Sky, forming a lovely trio easily visible shortly after sunset. Saturday evening in particular will find Saturn, Venus and Mercury all within a 2° circle (about the size of your thumb held at arm's length) above the Western Horizon.
Recorded last Sunday, June 19, this image shows the same 3 planets arrayed along the ecliptic plane above a Colorado Rocky Mountain skyline. Venus is easiest to pick out of the twilight, the brightest celestial beacon below picture center, with Saturn above and to the left of Venus and Mercury closest to the horizon, right of prominent Pinnacle Peak. By Saturday, the wandering planets will draw even closer together (...)".
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ZP-Mercuryandfriends.jpgMercury, Venus and Saturn in the Western Sky...Again!89 visiteDa "NASA - Picture of the Day" del 30 Giugno 2005:"Venus, Mercury, and Saturn wandered close together in western evening skies last week. On Saturday, June 25, astronomer R. Jay GaBany recorded this snapshot of their eye-catching planetary conjunction, from historic Lick Observatory on Mt. Hamilton, California, USA. The view looks toward the Pacific shortly after sunset with the lights of San Jose and the southern San Francisco Bay area in the foreground. Of course, Venus is the brightest of the trio. Mercury is nearby on the right and Saturn is below and left, closest to the horizon. Farther to the right of the planetary triangle are Pollux and Castor, twin stars of Gemini, with Regulus, bright star of the constellation Leo, at the very upper left corner of the picture. In the coming days, Venus and Mercury remain close, while Saturn continues to drop below them, toward the horizon".
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ZQ-MercuryTransit.jpgThe "Transit" of Mercury97 visiteDa "NASA - Picture of the Day" del 14-11-2006:" What's that dot on the Sun? If you look closely, it is almost perfectly round. The dot is the result of an unusual type of solar eclipse that occurred last week. Usually it is the Earth's Moon that eclipses the Sun. Last week, for the first time in over three years, the planet Mercury took a turn. Like the approach to New Moon before a solar eclipse, the phase of Mercury became a continually thinner crescent as the Planet progressed toward an alignment with the Sun. Eventually the phase of Mercury dropped to zero and the dark spot of Mercury crossed our parent star. The situation could technically be labeled a Mercurian Annular Eclipse with an extraordinarily large ring of fire. From above the cratered planes of the night side of Mercury, the Earth appeared in its fullest phase. Hours later, as Mercury continued in its orbit, a slight crescent phase appeared again. The next Mercurian solar eclipse will occur in 2016". MareKromium
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ZW-The Moon and Jupiter.jpgMoon and Jupiter142 visiteUn'immagine amatoriale davvero eccellente che ci arriva dalla cittadina di Atmore - Alabama, USA - e pubblicata sul Sito NASA - Picture of the Day del giorno 9 Dicembre 2004.
Ben visibili, accanto a Giove, guardando il versante superiore della Luna (e, per l'esattezza, quella sua parte che ci appare debolmente illuminata a causa del "chiaro di Terra"), riusciamo a vedere due "Satelliti Galileiani": Ganymede (quello più prossimo a Giove) e Callisto.
Complimenti al Sig. Westlake per l'immagine!
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ZZ-Jupiter and Venus.jpgJupiter and Venus in the dawn107 visiteUna spettacolare congiunzione Giove-Venere del Novembre 2004, come ripresa, pochi minuti prima dell'alba, nei cieli della Turchia (la citt che appare nello sfondo Bursa).
Si tratta di una fotografia amatoriale - a posa breve - ottenuta con estrema semplicit e senza l'ausilio - a quanto ci dato vedere - di particolari accortezze tecniche.
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ZZ-Sun Halo.jpgA Sun "Halo" in Tennessee92 visiteDal "NASA - Picture of the Day" del 9 Marzo 2005:"Sometimes it looks like the Sun is being viewed through a large lens. In the above case there are actually millions of lenses: ice crystals. As water freezes in the upper atmosphere, small, flat, six-sided, ice crystals might be formed. As these crystals flutter down, much time is spent with their faces flat, parallel to the ground. An observer may pass through the same plane as many of the falling ice crystals near sunrise or sunset. During this alignment, each crystal can act like a miniature lens, refracting sunlight into our view. Dramatically visible behind neighborhood houses and trees and above the cloud deck is the 22 halo created by sunlight reflecting off of atmospheric ice crystals".
L'alone spiegato in modo preciso ed accurato, ma esso non l'unico fenomeno visibile in questa foto: alla Vostra Sx si vedono - e bene! - 2 scie chimiche. E quelle come le spieghiamo? Vapori e cristalli?!?
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ZZ-Venus from Space.jpgVenus from the Earth's orbit137 visiteCaption NASA originale:"Venus can appear as a brilliant evening star. Besides the Sun and Moon, Venus is the brightest object visible in Earth's sky. Because it is closer to the Sun than Earth, Venus never strays far from the Sun in its apparent position and is seen during the year as either a bright morning or evening star. This beautiful sunset imaged from low earth orbit by the Atlantis space shuttle crew in May 1989 also reveals the planet Venus blazing above Earth's horizon. It is a fitting image for this mission and crew. It was recorded following the successful release of the robot Venus-explorer Magellan, the first planetary probe to be deployed from a space shuttle".
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ZZ-ZZ-SunFromMaunaKea.jpgThe Sun from Mauna Kea: an alien landscape176 visiteDa "NASA - Picture of the Day" del 4 Luglio 2005:"Typically, views from Mauna Kea are up and dark. That's because the famous dormant volcano in Hawaii is arguably Earth's premier observing platform of the complex and ever changing night sky. However, this daytime view is across and bright. White snow and white clouds seem to blend together to make an alien landscape. Cinder cones from extinct volcanic outbursts dominate the foreground. Scrolling right will reveal structures visually incongruous even here: an armada of the largest optical telescopes on Earth. The observatories seen include Subaru and Keck. In the distance on the far left is Mauna Loa, Earth's largest volcano".
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ZZ-ZZ-The Sun over K.jpgIs this Earth?95 visiteAvevamo proposto un'immagine altrettanto enigmatica nella Sezione dedicata al Pianeta Venere, allorché la "Stella della Sera" veniva ripresa dalla sommità di una montagna in compagnia della Luna, così generando un effetto davvero molto particolare.
Ora è la volta di un'alba, vista dal Monte Kilimanjaro. Sono stati usati filtri speciali? Forse i colori sono stati ritoccati al computer? No, su tutta la linea. Questa è una foto scattata dalla Terra, in colori reali, che riprende l'alba.
Adesso capite meglio perché la problematica dei 'Colori dello Spazio' non è accademica né peregrina? Se, in determinate condizioni di illuminazione, ergo a diverse ore del giorno, anche la Terra può apparire un Mondo Alieno (tipo Marte o Venere) allora, date le medesime variabili, anche un Mondo Alieno potrebbe, a diverse ore del giorno, apparire come la Terra e non ci sarebbe nulla di straordinario nel dirlo e nel mostrarlo. Ma, a quanto pare, la NASA non "vede" (ed é proprio il caso di dirlo...) le cose come le vediamo noi..
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ZZ-ZZ-ZZ-Venus, Mercury and Saturn.jpgVenus, Mercury and Saturn from Cerro Paranal (Chile)91 visiteDa "NASA - Picture of the Day" del 17 Agosto 2005:"Very bright planets and very large telescopes are part of this sunset view of Paranal Observatory. The observatory's four, massive 8,2 meter telescope units are situated on top of the 2.600 meter high mountain, Cerro Paranal, in the dry Atacama Desert in northern Chile. The individual unit telescopes can be used separately or in combination and are named Antu, Kueyen, Melipal and Yepun. Together they are fittingly known as the European Southern Observatory's Very Large Telescope. Of course, the very bright planets are Venus (near center), joined by Mercury (below) and Saturn (left) in late June's western evening skies".
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ZZ-ZZ-ZZ-Venus_Co_.jpgVenus, Mercury and Saturn from Brighton (Australia)99 visiteDa "NASA - Picture of the Day" del 2 Luglio 2005:"On Tuesday, June 28th, the setting Sun flooded the horizon with a beautiful warm light in this view from the beach beside the pier at Brighton in Adelaide, South Australia. The Sun also illuminated 3 planets gathered in the Western Sky, such as Mercury, Venus and Saturn. From this perspective Mercury is at the highest point in the celestial triangle, brilliant Venus is just below, and Saturn stands farther to the left and below the close pair. Of course, the Planets only appear close together on the sky but are actually quite far apart in space. The orbits of Mercury and Venus are both interior to Earth's orbit, while gas giant Saturn lies in the outer Solar System, over 9 AU from the Sun. Late next week, Venus and Mercury will share Western Skies with the young crescent Moon".
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ZZ-ZZ-ZZ-Venus_and_the_Moon.jpgCrescent Venus and crescent Moon from Budapest84 visiteDa "NASA - Picture of the Day" del 30 Ottobre 2006:"There's something behind these clouds. Those faint graceful arcs, upon inspection, are actually far, far in the distance. They are the Earth's Moon and the planet Venus.
Both the Moon and Venus are bright enough to be seen during the day, and both are quite capable of showing a crescent phase. To see Venus, which appears quite small, in a crescent phase requires binoculars or a telescope.
In the above dramatic daytime image taken from Budapest, Hungary, the Moon and Venus shared a similar crescent phase a few minutes before the Moon eclipsed the larger but more distant world.
About an hour later, Venus reappeared".
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