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ZZ-ZZ-ZZ-Venus_Co_.jpgVenus, Mercury and Saturn from Brighton (Australia)84 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 Budapest58 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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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".
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ZZ-ZZ-ZZ-ZZ-ZZ-LunarGreenFlash_laveder_f.jpgA "green flash" over the Moon121 visiteDa "NASA - Picture of the Day" del 26 Agosto 2005:"July's Full Moon looks strangely darkened and distorted in this remarkable telescopic view. The image is one of a series recorded when the Moon was very near the horizon. The long sight-line through a turbulent atmosphere gives rise to the tantalizing optical effects, including the thin "mirage" shape that seems to float just above the Moon's upper edge. Also seen (more easily in the inset), along the Moon's upper edge is a noticeable green rim. Substantial atmospheric refraction produces this prism-like effect -- related to the more commonly witnessed green flash of the setting Sun. Careful inspection of the full image reveals a corresponding red rim along the lower edge, another intriguing signature of atmospheric refraction".
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ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-PIA07997-2-plusRover-A667R1.jpgVirtual Presence in Space80 visiteThis synthetic image of the Spirit MER on top of a rock called "Jibsheet" was produced using "Virtual Presence in Space" technology. Developed at NASA's Jet Propulsion Laboratory, Pasadena, Calif., this technology combines visualization and image-processing tools with Hollywood-style special effects. The image was created using a photorealistic model of the Rover and a false-color mosaic. The size of the Rover in the image is approximately correct and was based on the size of the Rover tracks in the mosaic. The mosaic was assembled from frames taken by the Pan-Cam on the Rover's 489th Martian day (May 19, 2005); see PIA07997.
Because this synthesis provides viewers with a sense of their own "virtual presence" (as if they were there themselves), such views can be useful to mission teams in planning exploration by enhancing perspective and a sense of scale.
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ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-ZZ-Where-mer_2008258_lrg.jpgWhere is this Place?!?54 visiteUn altro (speriamo simpatico...) Space-Quiz per i nostri Lettori: secondo Voi, a quale Regione di Marte si riferisce questa (spettacolare) ripresa?MareKromium
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Zodiacal_Light_over_NM.jpgZodiacal Light over New Mexico53 visitenessun commentoMareKromium
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Zodiacal_beletsky_big.jpgZodiacal Light and the False Dawn53 visite"...Do not pronounce judgment before the time, before the Lord comes, who will bring to light the things now hidden in darkness and will disclose the purposes of the heart..."
- 1 Corinthians 4:5MareKromium
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ancients_legacy_1600.jpgUniversal Legacy85 visite
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before_the_storm_1600.jpgBefore the Storm...97 visite
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cove_of_dreams_1600.jpgTell me the Truth...101 visite
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crater_fog2_1600.jpgIn the Mist101 visite
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