| Piú viste - The Universe Inside |
EyesintheSky-W00037024.jpgLike "Eyes", in the Space of Saturn...70 visite"...Nec te quaesiveris extra..."
(Persio)
"...Non cercarti fuori da te stesso..."MareKromium
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Aurora_Borealis-2.jpgAurora Borealis over Juneau70 visiteCaption NASA:"Some auroras can only be seen with a camera. They are called sub-visual and are too faint to be seen with the unaided eye. The reason is that the human eye only accumulates light for a fraction of a second at a time, while a camera shutter can be left open indefinitely. When photographing an already picturesque scene above Juneau, Alaska, USA, a camera caught green sub-visual aurora near the horizon. 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". MareKromium
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Darkness-0.jpgMidnight-Sun over Vastitas (by Dr Marco Faccin)70 visiteDue ricostruzioni della "gelida - e buia - alba" sopra Vastitas Borealis le quali, con tutto il rispetto per la NASA e le sue "elaborazioni", sono semplicemente splendide. Forse le due pił belle interpretazioni mai realizzate sino ad ora.
Un grande complimento ed un abbraccio al sempre pił "magico" Dr Marco Faccin!MareKromium
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SOL208-2R144843263FFL8400P1313L0M1-A208R1.jpgSmiling Sun...70 visitenessun commentoMareKromium
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Proximity.jpgProximity (by Roberto Tremolada)70 visitenessun commentoMareKromium
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FaithFullMoon090409_westlake.jpgObscuring the Moon...70 visiteCaption NASA:"October's bright Full Moon is also known as the "Harvest Moon".
Traditionally, the Harvest Moon is the Full Moon closest to the Autumnal Equinox. But in this snapshot, the Full Moon could be called the "Old Faith-Full Moon".
Taken on September 4, 2009, the picture combines the regularly occurring lunar phase with Old Faithful Geyser in Yellowstone National Park, named for its dependable eruptions.
Shining on the well-known geyser's towering pillar from behind, the moonlight creates an eerie halo surrounding convoluted shapes.
Faithfully, the Full Moon itself is bright enough to be seen through the dense swirling steam near the top".MareKromium
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STS-30-NightLaunch.jpgReaching for the Stars...70 visitenessun commentoMareKromium
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SOL219-MF-LXTT.jpgWinter Sunset (by Dr M. Faccin - Lunexit Team)70 visitenessun commentoMareKromium
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M-42_and_Milky_Way.jpgGalactic Rainbow70 visite"...In Science, read, by preference, the newest works; in Literature, the oldest..."
Edward George Bulwer-Lytton (1803-1873) - "Caxtoniana - Hints of mental Culture" (1863)MareKromium
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Vortex.jpgInside the Vortex...69 visiteFix your camera to a tripod, lock the shutter open, and you can make an image of star trails - graceful concentric arcs traced by the stars as planet Earth rotates on its axis. Of course, the length of the star trails will depend on the exposure time. While exposures lasting just five minutes produce a significant arc, in about 12 hours a given star would trace out half a circle. But in any long exposure, the background glow from light-polluted skies can build up to wash out the trails. Still, astronomer Josch Hambsch produced this stunning composite of star trails around the South Celestial Pole with an effective "all night" exposure time of almost 11 hours. To do it, he combined 128 consecutive five minute long digital exposures recorded in very dark night skies above Namibia. In his final image, the background glow on the right is due in part to the faint, arcing Milky Way.
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MoonIllusion.jpgThe rise of a Dream...69 visite
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Counter-glow.jpgThe Gegenshein (or "Counter Glow") Effect in Pisces69 visiteDa "NASA - Picture of the Day", del 26 Dicembre 2006:"If you look carefully enough, you can even see the glow of the Sun in the opposite direction. At night this glow is known as the Gegenschein (German for "Counter Glow"), and can be seen as a faint glow in an extremely dark sky. The Gegenschein is sunlight back-scattered off small interplanetary dust particles. These dust particles are millimeter sized splinters from asteroids and orbit in the ecliptic plane of the planets.
Pictured above, the gegenschein is seen superposed toward the constellation of Pisces. The Gegenschein is distinguished from Zodiacal Light by the high angle of reflection. During the day, a phenomenon similar to the Gegenschien - called "The Glory" - can be seen in reflecting air or clouds opposite the Sun from an airplane".MareKromium
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