"Concerto d'Arranjuez"
2014-07-24
2014-07-23
Picture - A Solar Filament Erupts - 23-07-2014
Image Credit: NASA'sGSFC, SDO AIA Team
Explanation: What's happened to our Sun? Nothing very unusual -- it just threw a filament. Toward the middle of 2012, a long standing solar filament suddenly erupted into space producing an energetic Coronal Mass Ejection (CME). The filament had been held up for days by the Sun's ever changing magnetic field and the timing of the eruption was unexpected.Watched closely by the Sun-orbiting Solar Dynamics Observatory, the resulting explosionshot electrons and ions into the Solar System, some of which arrived at Earth three days later and impacted Earth's magnetosphere, causing visible aurorae. Loops of plasma surrounding an active region can be seen above the erupting filament in the ultraviolet image. Over the past week the number of sunspots visible on the Sun unexpectedly dropped to zero, causing speculation that the Sun has now passed a very unusual solar maximum, the time in the Sun's 11-year cycle when it is most active.
Imagens do Mundo - Rio Baitarani - Jajpur - India
Los aldeanos indios cruzan el río Baitarani durante las lluvias del monzón cerca Akhuapada en Jajpur distict del estado de Orissa, India. La estación de los monzones, que se extiende de junio a septiembre, trae lluvias que son vitales para la agricultura, pero también causan inundaciones y deslizamientos de tierra.
Foto - Passeando por Bordeaux - France - "Impasse Clémenceau"
"Impasse Clémenceau"
23-07-2014
JoanMira
2014-07-22
Fotografia - Lewis Hine - "Puto" de Paris em 1918
'Golfillo de París', ca. 1918. Colección George Eastman House, 2012.
Picture - Cave with Aurora Skylight
Image Credit & Copyright: Ingólfur Bjargmundsson
Explanation: Yes, but have you ever seen aurora from a cave? To capture this fascinating juxtaposition between below and above, astrophotographer Bjargmundsson spent much of a night alone in the kilometer-long Raufarhólshellir lava cave in Iceland during late March. There, he took separate images of three parts of the cave using a strobe for illumination. He also took a deep image of the sky to capture faint aurora, and digitally combined the four images later. The 4600-year old lava tube has several skylights under which stone rubble and snow have accumulated. Oh -- the person standing on each mound -- it's the artist.
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