Ciao, ciao, ciao...
2016-10-24
Astronomy picture of the day - 2016 October 24 - HI4PI: The Hydrogen Sky
Image Credit: Benjamin Winkel & the HI4PI Collaboration
Explanation: Where are the Milky Way's gas clouds and where are they going? To help answer this question, a new highest-resolution map of the sky in the universe's most abundant gas -- hydrogen -- has been completed andrecently released, along with its underlying data. Featured above, the all-sky map of hydrogen's 21-cm emission shows abundance with brightness and speed with color. Low radial speeds toward us artificially colored blue and low radial speeds away colored green. The band across the middle is the plane of our Milky Way Galaxy, while the bright spots on the lower right are the neighboring Magellanic Clouds. The HI4PI map collects data from over one million observations with the northern Eiffelsberg 100-Meter Radio Telescope in Germany and the southern Parkes 64-Meter Radio Telescope in Australia, also known as "The Dish". The details of the map not only better inform humanity about star formation and interstellar gas in our Milky Way galaxy, but also how much light this local gas is likely to absorb when observing the outside universe. Many details on the map are not yet well understood.
2016-10-23
Astronomy picture of the day - 2016 October 23 - Eagle Aurora over Norway
Image Credit & Copyright: Bjørn Jørgensen
Explanation: What's that in the sky? An aurora. A large coronal mass ejection occurred on our Sun five days before this 2012 image was taken, throwing a cloud of fast moving electrons, protons, and ions toward the Earth. Although most of this cloud passed above the Earth, some of it impacted our Earth's magnetosphere and resulted in spectacular auroras being seen at high northern latitudes. Featured here is a particularly photogenic auroral corona captured above Grotfjord, Norway. To some, this shimmering green glow of recombining atmospheric oxygen might appear as a large eagle, but feel free to share what it looks like to you. Although now past Solar Maximum, our Sun continues to show occasional activity creating impressive auroras on Earth visible only last week.
2016-10-22
Imagens do Rio de Janeiro - Palacios cariocas - Palácio Laranjeiras
Localizado no bairro de Laranjeiras, a dois quarteirões do Palácio Guanabara, esse palácio foi construído em 1913 para ser residência da Família Guinle.
Em 1947 o Presidente Dutra adquiriu o palacete para destiná-lo a hospedagem de visitantes ilustres e chefes de estado em visita ao Brasil, entre 1956 e 1961 foi a residência oficial da presidência, no governo Juscelino Kubitschek.
Hoje em dia é a residência oficial do governador do estado do Rio de Janeiro.
Astronomy picture of the day - 2016 October 22 - Cerro Tololo Trails
Image Credit & Copyright: Babak Tafreshi (TWAN), AURA
Explanation: Early one moonlit evening car lights left a wandering trail along the road to the Chilean Cerro Tololo Inter-American Observatory. Setting stars left the wandering trails in the sky. The serene view toward the mountainous horizon was captured in a telephoto timelapse image and video taken from nearby Cerro Pachon, home to Gemini South. Afforded by the mountaintop vantage point, the clear, long sight-line passes through layers of atmosphere. The changing atmospheric refraction shifts and distorts the otherwise steady apparent paths of the stars as they set. That effect also causes the distorted appearance of Sun and Moon as they rise or set near a distant horizon.
2016-10-21
Astronomy picture of the day - 2016 October 21 - Full Moon in Mountain Shadow
Image Credit & Copyright: Greg Chavdarian
Explanation: On October 15, standing near the summit of Hawaii's Mauna Kea and looking away from a gorgeous sunset produced this magnificent snapshot of a Full Moon rising within the volcanic mountain's shadow. An alignment across the Solar System is captured in the stunning scene and seeming contradiction of bright Moon in dark shadow. The triangular appearance of a shadow cast by a mountain's irregular profile is normal. It's created by the perspective of the distant mountaintop view through the dense atmosphere. Rising as the Sun sets, the antisolar point or the point opposite the Sun is close to the perspective's vanishing point near the mountain shadow's peak. But extending in the antisolar direction, Earth's conical shadow is only a few lunar diameter's wide at the distance of the Moon. So October's Full Hunters Moon is still reflecting sunlight, seen through the mountain's atmospheric shadow but found too far from the antisolar point and the Earth's extended shadow to be eclipsed.
2016-10-20
Imagens de Lisboa - Interiores secretos - "Igreja de São Miguel"
Almost every tourist that walks through Alfama passes right by this church, but ends up not knowing that they’re standing by one of the most remarkable works of architecture in the city. Behind a simple façade is a space almost entirely covered with gold leaf, but it can only be admired during Mass on Friday afternoon or early Sunday morning.
Praticamente todos os turistas que passeiam por Alfama passam por esta igreja, mas acabam por não se aperceber que se encontram junto de uma das mais notáveis obras artísticas da cidade. Uma simples fachada esconde um interior quase todo coberto de talha dourada, que apenas pode ser admirado durante a missa às sextas-feiras à tarde ou ao domingo de manhã.
Imagens do Mundo - Surf internacional em Peniche, Portugal
O surfista português Miguel Blanco em competição na praia de Supertubos em Peniche (Portugal). - Rip Curl Pro Portugal -.
CARLOS BARROSO EFE
Imagenes del Mundo - Bebé rinoceronte
Un bebé rinoceronte recién nacido camina tras su madre, en un zoológico de Des Moines, Iowa (Estados Unidos).
RODNEY WHITE AP
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