"Girls, just want to have fun"
2017-04-15
Astronomy picture of the day - 2017 April 15 - Luminous Salar de Uyuni
Image Credit & Copyright: Stephanie Ziyi Ye
Explanation: A scene in high contrast this thoughtful night skyscape is a modern composition inspired by M. C. Escher's lithograph Phosphorescent Sea. In it, bright familiar stars of Orion the Hunter and Aldebaran, eye of Taurus the Bull, hang in clear dark skies above a distant horizon. Below, faintly luminous edges trace an otherworldly constellation of patterns in mineral-crusted mud along the Uyuni Salt Flat of southwest Bolivia. The remains of an ancient lake, the Uyuni Salt Flat, Salar de Uyuni, is planet Earth's largest salt flat, located on the Bolivian Altiplano at an altitude of about 3,600 meters. Escher's 1933 lithograph also featured familiar stars in planet Earth's night, framing The Ploughor Big Dipper above waves breaking on a more northern shore.
2017-04-14
Astronomy picture of the day - 2017 April 14 - Earth Shadow over Damavand
Image Credit & Copyright: Majid Ghohroodi
Explanation: Through crystal clear skies this beautiful panorama follows the curve of planet Earth's shadow rising across the top of the world. The tantalizing twilight view is composed of eight single frames captured from 4,000 meters above sea level at sunset on April 6. Just above the dark grey Earth-shadow boundary lies a fading, pinkish, anti-twilight arch. Also known as the belt of Venus, its reddened and back-scattered sunlight finally merges with the still blue eastern sky. Standing tall near center along the rugged horizon line is the distant sharp peak of Mount Damavand in the snowy Alborz mountains. A feature in Persian mythology and literature, Damavand is a stratovolcano reaching 5,610 meters above sea level, the highest peak in Iran and the Middle East.
2017-04-13
Construção de Ponte 25 de Abril - Video - Documentario
Tendo começado a ser construída em 1962 e terminada em 1966, mais precisamente no dia 6 de Agosto de 1966 quando foi inaugurada, foi uma das poucas obras no nosso país desde então que foi projectada e construída, sem que houvessem derrapagens no orçamento. Foi uma obra feita há quase meio século, mas feita com pés e cabeça, note-se por exemplo que só várias décadas após a construção é que foi implementada a circulação de comboios, mas a ponte já estava preparada para isso. Se fosse actualmente mandava-se abaixo e construía-se outra…
Construção de Ponte 25 de Abril
Imagens - Maravilhas de Cuba - El Salto de Soroa
El Salto de Soroa, bautizado como el Arcoíris de Cuba: una cascada de 22 metros de altura en la que además está permitido bañarse.
HOLGER LEUE
Astronomy picture of the day - 2017 April 13 - Moons and Jupiter
Image Credit & Copyright: Göran Strand
Explanation: On April 10, a Full Moon and Jupiter shared this telephoto field of view. Both were near opposition, opposite the Sun in Earth's night sky. Captured when a passing cloud bank dimmmed the bright moonlight slightly, the single exposure reveals the familiar face of our fair planet's own large natural satellite, along with a line up of the ruling gas giant's four Galilean moons. Labeled top to bottom, the tiny pinpricks of light above bright Jupiter are Callisto,Europa, Ganymede, and Io. Closer and brighter, our own natural satellite appears to loom large. But Callisto, Ganymede, and Io are physically larger than Earth's Moon, while water world Europa is only slightly smaller. In fact, of the Solar System's six largest planetary satellites, only Saturn's moon Titan is missing from the scene.
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