2014-04-24

Para quem não tem vertigens... (vídeo)

Já pensou em saltar do topo de um edifício, em queda livre, de quase um quilómetro de altura? Foi o que a dupla Fred Fugen e Vince Reffet fez ao saltar do Burj Khalifa, no Dubai.
Vince Reffet e Fred Fugen conseguiram esta semana o recorde do mundo em «BASE jumping» (saltar do topo de edifícios). O feito foi alcançado no Dubai.
Para quebrar o recorde anterior de 671.78 metros registado em 2010, a dupla contou com uma plataforma posicionada no ponto mais alto do edifício.
Com a estrutura, os paraquedistas contaram com uma uma vantagem de quase 200 metros em relação ao salto anterior, totalizando uma altura de 828 metros, ou seja, o novo recorde mundial de salto a partir de um edifício.

2014-04-20

Benfica festeja titulo de campeão nacional




A imagem do dia 20-04-2014

 See Explanation.  Clicking on the picture will download
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Ash and Lightning above an Icelandic Volcano
Image Credit & Copyright: Sigurður Stefnisson

Explanation: Why did a picturesque 2010 volcanic eruption in Iceland create so much ash? Although the large ash plume was not unparalleled in its abundance, its location was particularly noticeable because it drifted across such well-populated areas. The Eyjafjallajökull volcano in southern Iceland began erupting on 2010 March 20, with a second eruption starting under the center of a small glacier on 2010 April 14. Neither eruption was unusually powerful. The second eruption, however, melted a large amount of glacial ice which then cooled and fragmented lava into gritty glass particles that were carried up with the rising volcanic plume. Pictured above during the second eruption, lightning bolts illuminate ash pouring out of the Eyjafjallajökull volcano.

2014-04-19

A imagem do dia 19-04-2014

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Earth-size Kepler-186f
Illustration Credit: NASA Ames / SETI Institute / JPL-Caltech, Discovery: Elisa V. Quintana, et al.

Explanation: Planet Kepler-186f is the first known Earth-size planet to lie within the habitable zone of a star beyond the Sun. Discovered using data from the prolific planet-hunting Kepler spacecraft, the distant world orbits its parent star, a cool, dim, M dwarf star about half the size and mass of the Sun, some 500 light-years away in the constellation Cygnus. M dwarfs are common, making up about 70 percent of the stars in our Milky Way galaxy. To be within the habitable zone, where surface temperatures allowing liquid water are possible, Kepler-186f orbits close, within 53 million kilometers (about the Mercury-Sun distance) of the M dwarf star, once every 130 days. Four other planets are known in the distant system. All four are only a little larger than Earth and in much closer orbits, also illustrated in the tantalizing artist's vision. While the size and orbit of Kepler-186f are known, its mass and composition are not, and can't be determined by Kepler's transit technique. Still, models suggest that it could be rocky and have an atmosphere, making it potentially the most Earth-like exoplanet discovered so far ...

Ivete Sangalo, Gilberto Gil e Caetano Veloso - "Tigresa" - Video - Musica - Ao vivo

"Tigresa"

Tribalistas - "Velha infância" - Video - Musica - Ao vivo

 
"Velha infância"