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2016-05-13

Astronomy picture of the day - 2016 May 13 - ISS and Mercury Too

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ISS and Mercury Too
Image Credit & Copyright: Thierry Legault

Explanation: Transits of Mercury are relatively rare. Monday's leisurely 7.5 hour long event was only the 2nd of 14 Mercury transits in the 21st century. If you're willing to travel, transits of the International Space Station can be more frequent though, and much quicker. This sharp video frame composite was taken from a well-chosen location in Philadelphia, USA. It follows the space station, moving from upper right to lower left, as it crossed the Sun's disk in 0.6seconds. Mercury too is included as the small, round, almost stationary silhouette just below center. In apparent size, the International Space Station looms larger from low Earth orbit, about 450 kilometers from Philadelphia. Mercury was about 84 million kilometers away. (Editor's note: The stunning video includes another double transit, Mercury and a Pilatus PC12 aircraft. Even quicker than the ISS to cross the Sun, the aircraft was about 1 kilometer away.)

2016-05-12

Anjos - "Transformação" - Pintura

"Transformação"

Astronomy picture of the day - 2016 May 12 - A Transit of Mercury

A Transit of Mercury
Image Credit & Copyright: Howard Brown-Greaves

Explanation: On May 9, the diminutive disk of Mercury spent about seven and a half hours crossing in front of the Sun as viewed from the general vicinity of Earth. It was the second of 14 transits of the Solar System's innermost planet in the 21st century. Captured from Fulham, London, England, planet Earth the tiny silhouette shares the enormous solar disk with prominences, filaments, and active regions in this sharp image. But Mercury's round disk (left of center) appears to be the only dark spot, despite the planet-sized sunspots scattered across the Sun. Made with an H-alpha filter that narrowly transmits the red light from hydrogen atoms, the image emphasizes the chromosphere, stretching above the photosphere or normally visible solar surface. In H-alpha pictures of the chromosphere, normally dark sunspot regions are dominated by bright splotches called plages.

2016-05-11

Roberto Carlos - "Olhando estrelas" - Musica

Image du Blog mamacascadeuse.centerblog.net

"Olhando estrelas"

Esta noite, debruçando-me à janela do meu quarto, com um céu de uma pureza limpida, as estrelas cintilantes envolvendo um quarto de crescente lua, vi como nunca antes tinha visto, um astro magnifico de luminosidade intensa, tentando dissimular o teu sorriso malicioso... Não te escondas "Pierre" (Pedro Teixeira), sei que és tu!

Faleceu Pedro Teixeira

11-05-2016

Astronomy picture of the day - 2016 May 11 - A Mercury Transit Music Video from SDO

A Mercury Transit Music Video from SDO
Video Credit: NASA's Goddard Space Flight Center, Genna Duberstein; Music: Encompass by Mark Petrie

Explanation: What's that small black dot moving across the Sun? Mercury. Possibly the clearest view of Mercury crossing in front of the Sun earlier this week was from Earth orbit. The Solar Dynamics Observatory obtained an uninterrupted vista recording it not only in optical light but also in bands of ultraviolet light. Featured here is a composite movie of the crossing set to music. Although the event might prove successful scientifically for better determining components of Mercury' ultra-thin atmosphere, the event surely proved successful culturally by involving people throughout the world in observing a rare astronomical phenomenon. Many spectacular images of this Mercury transit from around (and above) the globe are being proudly displayed.

2016-05-10

Simulação excepcional - Veja o Titanic a afundar em tempo real - Video

Résultat de recherche d'images pour "image le titanic"

Tem duas horas e quarenta minutos para preencher? Então pode assistir ao naufrágio do Titanic... em tempo real. Sim, é possível acompanhar ao minuto o que aconteceu após o trágico embate do famoso barco com um icebergue, através de uma simulação que tenta representar todos os momentos do acidente. E, ao contrário do que acontece na versão cinematográfica do evento, tudo se processou de forma bem mais lenta... No primeiro minuto, vemos o fatídico embate e, nos longos minutos que se seguem, a simulação dá-nos um olhar privilegiado do interior e exterior do barco enquanto este vai (lentamente) afundando. O resto é história.