2016-07-30

Imagens do Mundo - Ruas floridas - Porto Alegre, Brasil

The Script - "Six degrees of separation" - Video - Music

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"Six degrees of separation"

Bob Dylan & Eric Clapton - "Don't think twice, it's all right" - Video - Music - Live

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"Don't think twice, it's all right"

Astronomy picture of the day - 2016 July 30 - Ripples Through a Dark Sky

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Ripples Through a Dark Sky 
Image Credit & CopyrightP-M Hedén (Clear SkiesTWAN)
Explanation: Sunlight ripples through a dark sky on this Swedish summer midnight as noctilucent or night shining clouds seem to imitate the river below. In fact, the seasonal clouds often appear at high latitudes in corresponding summer months. Also known as polar mesospheric clouds, they form as water vapor is driven into the cold upper atmosphere. Fine dust supplied by disintegrating meteors or volcanic ash provides sites where water vapor can condense, turning to ice at the cold temperatures in the mesosphere. Poised at the edge of space some 80 kilometers above, these icy clouds really do reflect sunlight toward the ground. They are visible here even though the Sun itself was below the horizon, as seen on July 16 from Sweden's Färnebofjärdens National Park.

2016-07-29

Imagens do Mundo - Ruas floridas - Spello, Itália

Imagens do Mundo - Ruas floridas - Caminho encantador em Taiwan

Imagenes del Mundo - Galeria Tretyakov de Krymsky Val, en Moscú, Rusia.

Una mujer contempla una obra de Ivan Aivazovsky, el pintor romántico ruso, considerado uno de los mejores artistas marinos de la historia, en la Galeria Tretyakov de Krymsky Val, en Moscú, Rusia.
Una mujer contempla una obra de Ivan Aivazovsky, el pintor romántico ruso, considerado uno de los mejores artistas marinos de la historia, en la Galeria Tretyakov de Krymsky Val, en Moscú, Rusia.
PAVEL GOLOVKIN AP

Astronomy picture of the day - 2016 July 29 - Blue Danube Analemma

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Blue Danube Analemma 
Image Credit & CopyrightGyörgy Soponyai
Explanation: The Sun's annual waltz through planet Earth's sky forms a graceful curve known as an analemma. The analemma's figure 8 shape is tipped vertically at far right in this well-composed fisheye view from Budapest, Hungary. Captured at a chosen spot on the western bank of the Danube river, the Sun's position was recorded at 11:44 Central European Time on individual exposures over days spanning 2015 July 23 to 2016 July 4. Of course, on the northern summer solstice the Sun is at the top of the curve, but at the midpoints for the autumn and spring equinoxes. With snow on the ground, the photographer's shadow and equipment bag also appear in the base picture used for the composite panorama, taken on 2016 January 7. On that date, just after the winter solstice, the Sun was leaving the bottom of the beautiful curve over the blue Danube.