| Piú votate - The Universe Inside |
DoubleSun.jpgLens Flare or something else?!? (credits: Dr G. Barca)78 visiteUn Sole brillante e velato, domina il cielo sopra la Cittadina Ligure di Albissola. Ma che cosa c'è accanto a quel Sole Estivo?
Il Dr Barca, quando ha scattato la fotografia, riferisce di NON AVER visto nulla e quindi, a nostro parere, le possibilità sono solo due:
1) si tratta di un effetto ottico noto come "Lens Flare", in questo caso davvero molto simile a quegli effetti che, presenti in svariati frames Apollo, fecero parlare di UFO per anni ed erroneamente oppure...
2) ...oppure diteci Voi di che cosa si potrebbe trattare...MareKromium
(8 voti)
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PolarDD.jpgPolar Dust Devil (by José Amaral)57 visitenessun commentoMareKromium
(8 voti)
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Mist-of-Time.jpgThe Mist of Time (by Roberto Tremolada)57 visitenessun commentoMareKromium
(8 voti)
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The-MoonSlide.jpgFrom Light, to Light (by Stefan Seip)58 visiteCaption NASA:"No special filters - or even a telescope - are required to enjoy a leisurely Lunar Eclipse. In fact, watched from all over the night side of planet Earth, these regular celestial performances have entertained many casual skygazers.
Still, this eye-catching picture of a Lunar Eclipse may look unfamiliar.
To make it, astroimager Stefan Seip set his camera on a tripod and locked the shutter open during the Total Lunar Eclipse of March 3, 2007.
The resulting image records the trail of the Moon (and narrower trails of stars) sliding through the night. Reddish hues common during the total phase of a Lunar Eclipse, are evident along the darker, slimmer portion of the Moon trail. (...)".MareKromium
(8 voti)
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Once_upon_a_Time.jpgOnce Upon A Time... (by Roberto Tremolada)57 visite"...Fortuna immoderata est: in bono, atque in malo..."
(Laberio)
"...La Buona Sorte (al pari della Cattiva Sorte) non conosce misura: nè nel bene, nè nel male..."MareKromium
(8 voti)
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Venus_Jupiter.jpgVenus and Her Father, in the Morning Skies...64 visite"...Ut desint vires, tamen laudanda Voluntas est..."
(Ovidio)
"...Sebbene gli sforzi (per arrivare a conseguire qualcosa) possano non bastare, la Volontà (di raggiungere l'obbiettivo) va comunque apprezzata..."MareKromium
(8 voti)
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Mars_Orion.jpgMars and Orion over Monument Valley56 visite"...Consuetudine levior est labor..."
(Livio)
"...Con l'abitudine, il (ogni) lavoro appare meno pesante..."MareKromium
(8 voti)
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Iridescent_Cloud.jpgIridescent Cloud100 visiteCaption NASA:"Why would a cloud appear to be different colors? A relatively rare phenomenon known as "Iridescent Clouds" can show unusual colors vividly or a whole spectrum of colors simultaneously. These clouds are formed of small water droplets of nearly uniform size. When the Sun is in the right position and mostly hidden by thick clouds, these thinner clouds significantly diffract sunlight in a nearly coherent manner, with different colors being deflected by different amounts. Therefore, different colors will come to the observer from slightly different directions. Many clouds start with uniform regions that could show iridescence but quickly become too thick, too mixed, or too far from the Sun to exhibit striking colors.
This iridescent cloud was photographed above Boulder, Colorado last week".MareKromium
(8 voti)
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Aurora_Borealis.jpgAurora Borealis over Chena Lakes57 visiteCaption NASA:"Sometimes, after your eyes adapt to the dark, a spectacular sky appears. In this case, a picturesque lake lies in front of you, beautiful green aurora flap high above you, brilliant stars shine far in the distance, and, for a brief moment, a bright meteor streaks by. This digitally fused breathtaking panorama was captured late last month across one of the Chena Lakes in North Pole, Alaska, USA, and includes the Pleiades open cluster of stars on the image right. The shot is unusual not only for the many wonders it has captured simultaneously, but because lakes this far north tend to freeze and become non-reflecting before a sky this dark can be photographed".MareKromium
(8 voti)
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NoctilucentClouds.jpgNoctilucent Clouds over Sweden74 visiteCaption NASA:"Sometimes it's night on the ground but day in the air. As the Earth rotates to eclipse the Sun, sunset rises up from the ground.
Therefore, at sunset on the ground, sunlight still shines on clouds above. Under usual circumstances, a pretty sunset might be visible, but unusual noctilucent clouds float so high up they can be seen well after dark.
Pictured above last month (September 2007), a network of noctilucent clouds cast a colorful but eerie glow after dusk near Vallentuna, Sweden.
Although noctilucent clouds are thought to be composed of small ice-coated particles, much remains unknown about them. Satellites launched to help study these clouds includes Sweden's Odin and NASA's AIM.
Recent evidence indicates that at least some noctilucent clouds result from freezing water exhaust from Space Shuttles".MareKromium
(8 voti)
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MilkyWayRoad.jpgThe "Milky Way Road"57 visite"...Dominus dedit, Dominus abstulit..."
(Giobbe - 1, 21)
"...Dio diede, Dio tolse..."MareKromium
(8 voti)
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PangeaUltima_scotese_big.jpgA VERY far, distant and yet possible Future: Pangea Ultima58 visiteIs this what will become of the Earth's surface? The surface of the Earth is broken up into several large plates that are slowly shifting.
About 250 MY ago, the plates on which the present-day continents rest were positioned quite differently, so that all the landmasses were clustered together in one supercontinent now dubbed Pangea. About 250 MY from now, the plates are again projected to reposition themselves so that a single landmass dominates.
The above simulation from the PALEAOMAP Project shows this giant landmass: Pangea Ultima.
At that time, the Atlantic Ocean will be just a distant memory, and whatever beings inhabit Earth will be able to walk from North America to Africa.MareKromium
(8 voti)
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