| Piú votate - The Universe Inside |
Minotaur_and_Moon.jpgThe "Minotaur" rocket and the Moon54 visitenessun commentoMareKromium
(10 voti)
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Aurora_Borealis_-_01.jpgRed Space-Waterfall54 visitenessun commentoMareKromium
(10 voti)
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Aurora_Borealis_-_02.jpgPeaceful Morning Sky64 visitenessun commentoMareKromium
(10 voti)
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Aurora_Borealis_-_04.jpgPurple (light's) Rain...54 visiteSi tratta della stessa fotografia mostrataVi nel quadro precedente ma, questa volta, è in "colori autentici" (almeno a nostro parere...).MareKromium
(10 voti)
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Morning.jpgThe Pink-fingered Dawn...57 visiteMareKromium
(10 voti)
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Skylab-1973.jpgThe "unforgettable" Skylab...79 visiteDa "NASA - Picture of the Day", del 29 Aprile 2006:"Skylab was an orbiting laboratory launched by NASA in May 1973. Skylab, pictured above, was visited 3 times by NASA Astronauts who sometimes stayed as long as two and a half months. Many scientific tests were performed on Skylab, including astronomical observations in ultraviolet and X-ray light. Some of these observations yielded valuable information about Comet Kohoutek, our Sun and about the mysterious X-ray Background Radiation that (apparently) comes from all over the sky.
Skylab fell back to Earth on July, 11, 1979".
(10 voti)
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Moon and Companions~2.jpgHappy New Year from the Moon and Venus68 visiteDa "NASA - Picture of the Day" del 4 Gennaio 2006:"Fading sunlight, a young crescent Moon, and brilliant Venus shared the Western Sky in this view of 2005's final sunset from the top of Mount Haleakala, on Maui, Hawaii. Also known as the Sacred House of the Sun, Haleakala, is Maui's dormant volcano.
At 10.000 feet, the Summit is an ideal site for astronomical observatories, and this scene also features the silhouette of the Northern Hemisphere Faulkes Telescope. It can be of particular interest to students the fact that the Faulkes Telescope (a 2-meter diameter instrument, dedicated to astronomy education), can be remotely operated over the internet.
The Project is a joint effort between the Dill Faulkes Educational Trust and the University of Hawaii - Institute for Astronomy (...)".
(10 voti)
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ZZ-ZZ-ZZ-Venus, Mercury and Saturn.jpgVenus, Mercury and Saturn from Cerro Paranal (Chile)77 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".
(10 voti)
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ZZ-ZZ-ZZ-ZZ-LunarAnalemma_richins_f.jpgMoon's analemma (New Mexico)163 visiteDa "NASA - Picture of the Day" del 13 Luglio 2005:"An analemma is an 8-like curve that is gotten when you mark the position of the Sun at the same time each day for 1 year. To imaging an analemma of the Moon it is necessary to understand that, on average, the Moon returns to the same position in the sky about 51' later each day. So, photographing the Moon 51' later on successive days, over one lunation (or Lunar month) it will trace out an analemma-like curve as the actual position of the Moon wanders compared to the average - due to the Moon's tilted and elliptical orbit. (...) Multiple exposure image required some digital manipulation, particularly to include thin crescent phases in daytime skies".
(10 voti)
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ZZ-ZZ-ZZ-Venus_Co_.jpgVenus, Mercury and Saturn from Brighton (Australia)85 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".
(10 voti)
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ZZ-Sun Halo.jpgA Sun "Halo" in Tennessee78 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 è spiegato in modo preciso ed accurato, ma esso non è 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?!?
(10 voti)
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