"Cienfuegos"
Cuba, 03-11-2010
JoanMira
2015-08-25
Astronomy picture of the day - 2015 August 25 - Meteors and Milky Way over Mount Rainier
Image Credit & Copyright: Matthew Dieterich
Explanation: Despite appearances, the sky is not falling. Two weeks ago, however, tiny bits of comet dust were. Featured here is the Perseids meteor shower as captured over Mt. Rainier, Washington, USA. The image was created from a two-hour time lapse video, snaring over 20 meteors, including one that brightened dramatically on the image left. Although each meteor train typically lasts less than a second, the camera was able to capture their color progressions as they disintegrated in the Earth's atmosphere. Here an initial green tint may be indicative of small amounts of glowing magnesium atoms that were knocked off the meteor by atoms in the Earth's atmosphere. To cap things off, the central band of our Milky Way Galaxy was simultaneously photographed rising straight up behind the snow-covered peak of Mt. Rainier. Another good meteor shower is expected in mid-November when debris from a different comet intersects Earth as the Leonids.
2015-08-24
Astronomy picture of the day - 2015 August 24 - Dione, Rings, Shadows, Saturn
Image Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA
Explanation: What's happening in this strange juxtaposition of moon and planet? First and foremost, Saturn's moon Dione was captured here in a dramatic panorama by the robotic Cassini spacecraft currently orbiting the giant planet. The bright and cratered moon itself spans about 1100-km, with the large multi-ringed crater Evander visible on the lower right. Since the rings of Saturn are seen here nearly edge-on, they are directly visible only as a thin horizontal line that passes behind Dione. Arcing across the bottom of the image, however, are shadows of Saturn's rings, showing some of the rich texture that could not be seen directly. In the background, few cloud features are visible on Saturn. The featured image was taken during the last planned flyby of Dione by Cassini, as the spacecraft is scheduled to dive into Saturn's atmosphere during 2017.
2015-08-23
Imagenes del Mundo - Los sumideros del Mar Muerto,
El Mar Muerto se está reduciendo, y sus aguas desaparecen a un ritmo de más de un metro al año. La razón principal es que las fuentes naturales de agua, que fluyen hacia el sur por el valle del Río Jordán de Siria y el Líbano , han sido desviadas para la agricultura y el agua potable a lo largo del camino. En la foto tubos que bombean agua a través de piscinas de evaporación en la zona sur del Mar Muerto.
Conhece todos os miradouros em Lisboa?... Miradouro do Largo das Necessidades,
This terrace and the garden behind it remain undiscovered by most people. It’s faced by Necessidades Palace and offers a beautiful view of 25 de Abril Bridge.
Este miradouro e o jardim a que dá acesso são ainda desconhecidos de muita gente. É o terraço do Palácio das Necessidades, oferecendo uma bela vista da Ponte 25 de Abril.
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